HESI A2 Practice 120 Questions with Verified Answers,100% CORRECT

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HESI A2 Practice 120 Questions with Verified Answers 1) Which of the following describes the primary function of the respiratory system? A) to create sound and speech B) to take oxygen into ... the body while removing carbon dioxide C) to transport nutrients to the cells and tissue of the body D) to act as a barrier between the body's organs and outside influences - CORRECT ANSWERS to take oxygen into the body while removing carbon dioxide 2) Which of the following is the first step of the scientific method? A) construct a hypothesis B) make observations C) analyze data D) form a question - CORRECT ANSWERS make observations 3) The process of organisms with an advantageous trait surviving more often and producing more offspring than organisms without the advantageous trait describes which of the following basic mechanisms? A) gene flow B) genetic drift C) mutation D) natural selection - CORRECT ANSWERS natural selection 4) Which of the following is the group of basophils that produces follicle-stimulating hormone (FSH) and luteinizing hormone? A) gonadotrophs B) thyotroph C) chromophil D) pituicytes - CORRECT ANSWERS gonadotrophs 5) Which of the following are considered the basic units of the female reproductive system, each containing a single immature egg cell that is released during ovulation? A) oocytes B) follicles C) ovaries D) fundus - CORRECT ANSWERS follicles 6) Which of the following describes the muscular organ that processes food material into increasingly smaller pieces, mixes it with saliva to create a bolus, and creates a barrier to transport food into the esophagus? A) pharynx B) tongue C) diaphragm D) stomach - CORRECT ANSWERS tongue 7) Which of the following chambers of the heart receives blood returning from the lungs during pulmonary circulation? A) left atrium B) right atrium C) left ventricle D) right ventricle - CORRECT ANSWERS left atrium 8) Which of the following is the lobe in the cerebral cortex primarily responsible for processing and integrating sensory information received from the rest of the body? A) frontal lobe B) occipital lobe C) parietal lobe D) temporal lobe - CORRECT ANSWERS parietal lobe 9) Which of the following is an example of adaptive, or specific, immunity? A) inflammation B) fever C) humoral D) phagocytosis - CORRECT ANSWERS humoral 10) Which of the following describes a situation in which research results are consistent with every subsequent experiment, but the test used in the experiment does not measure what it claims to measure? A) reliable, but not valid B) valid, but not reliable C) neither reliable or valid D) both reliable and valid - CORRECT ANSWERS reliable, but not valid 11) Which of the following Mendellian laws describes how pairs of alleles within genes separate and recombine separately from other genes? A) law of segregation B) law of dominance C) law of independent assortment D) law of predictive traits - CORRECT ANSWERS law of independent assortment 12) Which of the following describes how atomic radius varies across the periodic table? A) atomic radius increases from top to bottom and left to right on the periodic table B) atomic radius increases from top to bottom and right to left on the periodic table C) atomic radius increases from top to bottom and toward the halogens on the periodic table D) atomic radius increases from top to bottom and toward the noble gases on the periodic table - CORRECT ANSWERS atomic radius increases from top to bottom and right to left on the periodic table 13) Which of the following is NOT a tissue layer found in skeletal bones? A) periosteum B) bone marrow C) enamel D) cancellous bone - CORRECT ANSWERS enamel 14) Which of the following sets of valves is primarily responsible for preventing blood flow from major blood vessels to the heart? A) atrioventricular valves B) semilunar valves C) tricuspid valves D) bicuspid valves - CORRECT ANSWERS semilunar valves 15) Bone is composed primarily of which of the following inorganic materials? A) calcium B) magnesium C) collagen D) potassium - CORRECT ANSWERS calcium 16) Which of the following is the primary physical barrier the body uses to prevent infection? A) mucus membranes B) stomach acid C) skin D) urine - CORRECT ANSWERS skin 17) Which of the following is the connective area where nerve impulses send neurotransmitters across a synapse to a muscle cell to stimulate muscle contraction? A) sarcomere B) tendon C) nicotinic receptors D) neuromuscular junctions - CORRECT ANSWERS neuromuscular junctions 18) Which of the following is the region of the brain that controls and regulates autonomic functions such as respiration, digestion, and heart rate? A) cerebellum B) medulla oblongata C) temporal lobe D) cerebral cortex - CORRECT ANSWERS medulla oblongata 19) Which of the following describes the primary function of the pyloric sphincter? A) to regulate the movement of digested food material from the stomach to the duodenum B) to neutralize stomach acid C) to prevent food materials and stomach acid from leaking into other bodily tissues D) to begin the process of chemical digestion - CORRECT ANSWERS to regulate the movement of digested food material from the stomach to the duodenum 20) Which of the following is the location of fertilization in the females? A) uterus B) fallopian tube C) endometrium D) fimbriae - CORRECT ANSWERS fallopian tube 21) The pineal gland is located in which of the following areas in the body? A) below the larynx B) above the kidney C) at the center of the brain hemispheres D) at the base of the brain - CORRECT ANSWERS at the center of the brain hemispheres 22) Which of the following processes aids scientists in observing a population sample in order to answer questions about the whole population? A) univariate analysis B) inferential statistics C) descriptive statistics D) probability - CORRECT ANSWERS inferential statistics 23) Which of the following biological macromolecules is non-soluble, composed of hydrocarbons, and acts as an important source of energy storage for the body? A) carbohydrates B) nucleic acids C) lipids D) proteins - CORRECT ANSWERS lipids 24) Which of the following is specialized tissue in the right atrium that acts as the heart's natural pacemaker by generating the electrical signal for the heartbeat? A) sinus venosus B) sinoatrial node C) atrioventricular node D) septa - CORRECT ANSWERS sinoatrial node 25) Which of the following is a dense, interconnected mass of nerve cells located outside the central nervous system? A) ganglion B) dendrite C) cranial nerve D) pons - CORRECT ANSWERS ganglion 26) Which of the following is the primary cell found in the tract of the small intestine? A) surface absorptive cells B) surface lining cells C) parietal cells D) hepatocytes - CORRECT ANSWERS surface absorptive cells 28) Which of the following describes the general function of cytokines in the immune system? A) they communicate between cells to instigate an immune response B) they inhibit blood clotting during inflammation responses C) they bind to specific pathogens to increase pathogen mass D) they transport pathogens trapped in mucus to be destroyed in the stomach - CORRECT ANSWERS they communicate between cells to instigate an immune response 29) Which of the following describes the path through which air moves during inhalation? A) mouth/nose > pharynx > larynx > trachea > bronchi > bronchioles > alveoli B) bronchioles > alveoli > bronchi > larynx > pharynx > lungs C) mouth/nose > bronchi > bronchioles > alveoli > lungs > trachea D) alveoli > bronchioles > lungs > bronchi > trachea > larynx > pharynx > mouth/nose - CORRECT ANSWERS mouth/nose > pharynx > larynx > trachea > bronchi > bronchioles > alveoli 30) Which of the following is not a function of progesterone in the female reproductive system? A) expression of secondary sexual characteristics, such as enlarged breasts B) stimulation of milk production in the breasts C) regulation and preparation of the endometrial lining of the uterus for potential pregnancy D) inhibition of contractions of the uterus as the ovum is released - CORRECT ANSWERS expression of secondary sexual characteristics, such as enlarged breasts 31) Which of the following layers of skin acts as an energy reserve by storing adipocytes and releasing them into circulation when energy is needed? A) epidermis B) dermis C) hypodermis D) stratum basale - CORRECT ANSWERS hypodermis 32) Neurotransmitters send chemical messages across the gap between one neuron and another in which of the following structures? A) cell membrane B) ganglion C) synapse D) axon - CORRECT ANSWERS synapse 33) Hund's rule states which of the following? A) chemical bonds are formed only between electrons with similar spin B) the attraction between electrons holds atoms together C) a ground state atom always has a completely filled valence shell D) electrons fill orbitals singly and with similar spin before pairing - CORRECT ANSWERS electrons fill orbitals singly and with similar spin before pairing 34) Which of the following is the primary function of the large intestine? A) absorbing digested material into the blood B) nutrient processing and metabolizing C) absorbing water and compacting material into solid waste D) bile production and storage - CORRECT ANSWERS absorbing water and compacting material into solid waster 35) When setting up the above experiment, the scientist has the option of using a separate water filter for each of the three tanks or using a single filtration system that attaches all three and affects them simultaneously. Which of the following filter set ups makes a more valid experiment and why? A) separate filters for each of the three tanks, because this ensures a higher quality of water for each tank B) one filtration system for all three tanks, because this makes filtration a controlled variable C) one filtration system for all three tanks, because this reduces the workload for the researcher D) separate filters for each of the three tanks, because this adds another variable to be tested and analyzed for inclusion in the experiment's results - CORRECT ANSWERS one filtration system for all three tanks, because this makes filtration a controlled variable 36) The above experimental design description is an example of which of the following types of experiments? A) field experiment B) natural experiment C) controlled experiment D) observational study - CORRECT ANSWERS controlled experiment 37) Which of the following is the control group in the above experiment A) tank A B) tank B C) tank C D) there is no control group in this experiment - CORRECT ANSWERS tank A 38) Which of the following is a type of white blood cell that plays a key role in adaptive immunity by seeking out, attacking, and destroying targeted pathogens? A) B cells B) goblet cells C) antibodies D) T cells - CORRECT ANSWERS T cells 39) Which of the following are the blood vessels that transport blood to the heart? A) arteries B) capillaries C) venules D) veins - CORRECT ANSWERS veins 40) Which of the following organelles are the site of lipid synthesis? A) smooth endoplasmic reticulum B) ribosome C) rough endoplasmic reticulum D) golgi apparatus - CORRECT ANSWERS smooth endoplasmic reticulum 41) Which of the following describes a series of measurements that produces exact results on a consistent basis? A) accurate B) precise C) valid D) significant - CORRECT ANSWERS precise 42) Chromatids divide into identical chromosomes and migrate to opposite ends of the cell in which of the following phases of mitosis? A) metaphase B) anaphase C) prophase D) telophase - CORRECT ANSWERS anaphase 43) A series of muscle contractions that transports food down the digestive tract in a wave-like fashion describes which of the following? A) digestion B) deglutition C) defecation D) peristalsis - CORRECT ANSWERS peristalsis 44) Which of the following is NOT a function of the liver? A) nutrient processing B) blood filtration and detoxification C) cholesterol and lipoprotein production D) insulin production and blood sugar regulation - CORRECT ANSWERS insulin production and blood sugar regulation 45) 2C6H14 + 19O2 --> 12CO2 + 14H2O The reaction above is an example of which of the following? A) substitution reaction B) acid-base reaction C) enzyme reaction D) combustion reaction - CORRECT ANSWERS combustion reaction 46) Which of the following are regions of the digestive system in which amylase is produced? A) pancreas and salivary glands B) gall bladder and salivary glands C) gall bladder and liver D) pancreas and liver - CORRECT ANSWERS pancreas and salivary glands 47) Which of the following describes a cell's reaction to being placed in a hypertonic solution? A) the cell will shrink as water is pulled out of the cell to equalize the concentrations inside and outside the cell B) the cell will swell as water is pulled into the cell to equalize the concentrations inside and outside the cell C) the cell will remain the same size since the concentrations inside and outside the cell are equal to begin with D) the pH inside the cell will drop in order to equalize the pH inside and outside the cell - CORRECT ANSWERS the cell will shrink as water is pulled out of the cell to equalize the concentrations inside and outside the cell 48) Which of the following are the two major zones of the respiratory system? A) left bronchus and right bronchus B) nose and mouth C) larynx and pharynx D) conducting and respiratory - CORRECT ANSWERS conducting and respiratory 49) Which of the following is not one of the major tissue layers of the alimentary canal? A) submucosa B) muscularis C) adventitia D) duodenum - CORRECT ANSWERS duodenum 50) Which of the following distinguishes the isotopes of an element? A) isotopes are atoms of the same element that have different ionic charges B) isotopes are atoms of elements within the same group on the periodic table C) isotopes are atoms of the same element that have different numbers of neutrons D) isotopes are atoms of the same element with different electron configurations - CORRECT ANSWERS isotopes are atoms of the same element that have different numbers of neutrons 51) Which of the following is the cartilaginous flap that protects the larynx from water or food while still allowing the flow of air? A) epiglottis B) bronchioles C) epithelium D) tongue - CORRECT ANSWERS epiglottis 52) Which of the following describes the function of the fascia in muscle tissue? A) to enclose, protect, support, and separate muscle tissue B) to connect muscle tissue to bone C) to serve as the contractile until of muscle D) to slide past the actin protein cells in muscle to create contraction - CORRECT ANSWERS to enclose, protect, support, and separate muscle tissue 53) Which of the following correctly describes a strong acid? A) a strong acid completely ionizes in water B) a strong acid donates more than one proton C) a strong acid contains at least one metal ion D) a strong acid will not decompose - CORRECT ANSWERS a strong acid completely ionizes in water 54) The process by which blood circulates oxygen from the lungs to the body's tissues is an example of which of the following? A) external respiration B) internal respiration C) inhalation D) exhalation - CORRECT ANSWERS internal respiration 55) Which of the following is the material that is secreted into hair follicles to waterproof and lubricate the skin? A) sweat B) sebum C) vernix caseosa D) mucus - CORRECT ANSWERS sebum 56) Which of the following are the connective tissues that attach bone to bone and help strengthen joints? A) tendons B) cartilage C) collagen D) ligaments - CORRECT ANSWERS ligaments 57) Which of the following is NOT a nucleobase of DNA? A) adenine B) guanine C) thymine D) uracil - CORRECT ANSWERS uracil 58) Which of the following materials is the primary structural protein of the epidermis, nails, and skin? A) eponychium B) collagen C) keratin D) fibroblast - CORRECT ANSWERS keratin 59) Which of the following correctly describes atomic number? A) the atomic number is the number of atoms in a mole of a given substance B) the atomic number is the number of neutrons in an atom C) the atomic number is the number of atoms in a gram of a given substance D) the atomic number is the number of protons in an atom - CORRECT ANSWERS the atomic number is the number of protons in an atom 60) Which of the following is a descriptive, generalized body of scientific observations? A) law B) theory C) model D) hypothesis - CORRECT ANSWERS law 61) Which of the following types of cells are the main transporters of oxygen through the body? A) goblet cells B) white blood cells C) red blood cells D) platelets - CORRECT ANSWERS red blood cells 62) Which of the following is the general term for a chemical substance that the body produces and transports through the blood to stimulate a cellular response? A) hypophysis B) amino acids C) oxytocin D) hormones - CORRECT ANSWERS hormones 63) Which of the following is NOT a function of hair? A) regulation of body temperature B) extension of the sensory system C) protection from UV radiation D) protecting soft tissue from injury - CORRECT ANSWERS protecting soft tissue from injury 64) Which of the following is NOT one of the functions of proteins found in the phospholipid bilayer of a cell membrane? A) to break down material that enters through the cell membrane B) to act as receptors that recognize and transmit hormonal messages C) to provide an attachment point for other cells D) to transport material across the membrane into the cell - CORRECT ANSWERS to break down material that enters through the cell membrane 65) Which of the following is the muscular action that moves a part of the body away from its median plane? A) abduction B) adduction C) pronation D) supination - CORRECT ANSWERS abduction 66) Which of the following does NOT distinguish quantitative data collection from qualitative data collection methods? A) qualitative methods are more open-ended than quantitative B) results from randomized quantitative methods can be applied to a general population; results from qualitative cannot C) quantitative methods are number based; qualitative methods are text based D) qualitative methods do not need to be as valid or reliable as quantitative methods - CORRECT ANSWERS qualitative methods do not need to be as valid or reliable as quantitative methods 67) Which of the following is an example of a birthmark caused by an increased volume of capillaries close to the surface of the skin? A) ephelides B) vascular nevis C) melanocytes D) comedones - CORRECT ANSWERS vascular nevis 68) Which of the following correctly describes the valence shell of an atom? A) the valence shell is the outermost-occupied electron orbital energy level B) the valence shell is always partially filled with electrons C) the valence shell is found only in ions, not in neutral atoms D) the valence shell must contain p-orbitals - CORRECT ANSWERS the valence shell is the outermost-occupied electron orbital energy level 69) Which of the following describes how skeletal muscles and bones work together to stimulate movement? A) muscles contract and exert force on the bone, which acts as a lever to stimulate movement B) bones contract and exert force on the muscle, which acts as a lever to stimulate movement C) muscles elongate, moving the bone involuntarily D) bones elongate, moving the muscle involuntarily - CORRECT ANSWERS muscles contract and exert force on the bone, which acts as a lever to stimulate movement 70) Which of the following describes the correct order of stages of the cell cycle? A) interphase --> mitosis --> cytokinesis B) prophase --> metaphase --> anaphase --> telophase C) interphase --> meiosis I --> meiosis II D) gap I --> synthesis --> gap II - CORRECT ANSWERS interphase --> mitosis --> cytokinesis 71) Which of the following occurs due to a hypersensitivity in the immune system that causes a major inflammatory response to a common material? A) development of antibodies B) autoimmune disorders C) allergies D) AIDS - CORRECT ANSWERS allergies 72) Which of the following is one of the primary muscles that drives ventilation? A) thoracic cavity B) oblique C) lungs D) diaphragm - CORRECT ANSWERS diaphragm 73) White blood cells develop from stem cells located in which of the following organs? A) thymus B) bone marrow C) lymph node D) spleen - CORRECT ANSWERS bone marrow 74) Which of the following describes the gene in which one allele takes a different form from another? A) phenotype B) heterozygous C) homolog D) homozygous - CORRECT ANSWERS heterozygous 75) Which of the following molecules have London dispersion forces? A) all atoms and molecules have London dispersion forces B) atoms and molecules with full valence shells have London dispersion forces C) atoms and molecules with a noble gas electron configuration have London dispersion forces D) atoms and molecules that contain at least one metal atom have London dispersion forces - CORRECT ANSWERS all atoms and molecules have London dispersion forces 76) Which of the following are the two proteins found in muscle tissue that cause muscle contraction as they slide past one another? A) actin and sarcomeres B) actin and myosin C) myosin and tropomyosin D) troponin and sarcomeres - CORRECT ANSWERS actin and myosin 77) Which of the following is NOT a hormone-producing gland of the endocrine system? A) steroid B) pituitary C) adrenal D) thyroid - CORRECT ANSWERS steroid 78) Which of the following is the process in which pathogens are "eaten", or absorbed and digested, by white blood cells as part of an immune response? A) pinocytosis B) phagocytosis C) opsonization D) vasodilation - CORRECT ANSWERS phagocytosis 79) Which of the following describes the relationship between correlation and causation? A) correlation implies causation B) only negative correlation implies causation C) correlation and causation are mutually exclusive; if one happens, the other cannot D) correlation does not imply causation - CORRECT ANSWERS correlation does not imply causation 80) The exchange of gases and blood happens in which of the following parts of the respiratory zone? A) alveoli B) alveolar duct C) pleura D) bronchioles - CORRECT ANSWERS alveoli 81) Which of the following glands provides nourishment for sperm, as well as the majority of the fluid that combines with sperm to form semen? A) seminal vesicles B) prostate gland C) bulbourethral glands D) Cowper's glands - CORRECT ANSWERS seminal vesicles 82) Which of the following is the largest branch of the abdominal aorta, which supplies oxygenated blood to the upper digestive tract? A) inferior mesenteric artery B) gastric artery C) celiac artery D) superior mesenteric artery - CORRECT ANSWERS celiac artery 83) Which of the following is NOT a phase of spermatogenesis, or the final stage of sperm formation? A) tail formation B) cap phase C) golgi phase D) fertilization - CORRECT ANSWERS fertilization 84) Blood is metabolized in the liver as it passes through which of the following types of blood vessels? A) hepatic vein B) inferior vena cava C) arterioles D) sinusoidal capillaries - CORRECT ANSWERS sinusoidal capillaries 85) Which of the following is a heterogenous mixture? A) a mixture in which the atoms or molecules are distributed unevenly B) a mixture of more than one type of atom or molecule C) a mixture of covalent and ionic compounds D) a mixture of polar and nonpolar molecules - CORRECT ANSWERS a mixture in which the atoms or molecules are distributed unevenly 86) Hormones can be classified into one of four basic groups based on their chemical source. Which of the following groups is derived from cholesterol? A) catecholamines B) steroids C) polypeptides D) eicosanoids - CORRECT ANSWERS steroids 87) Which of the following is a definition of adaptation, in the context of evolution? A) the process of descent with modification B) the increased likelihood that a particular genotype will increase in frequency in a population C) the process of individuals in a population choosing mates due to superior characteristics D) a biological feature or behavior in a population of organisms that improves its chances for survival in the environment - CORRECT ANSWERS the increased likelihood that a particular genotype will increase in frequency in a population 88) Which of the following is the element of blood that comprises most of its volume? A) plasma B) red blood cells C) white blood cells D) water - CORRECT ANSWERS water 89) Which of the following is NOT true for enzyme-catalyzed reactions? A) the reaction will speed up if the concentration of substrate increases B) the reaction will speed up if the concentration of enzymes increases C) the reaction will slow down at very low temperatures D) the reaction will speed up without limit as the temperature increases - CORRECT ANSWERS the reaction will speed up without limit as the temperature increases 90) Which of the following is the molecule found in red blood cells that binds to up to four oxygen molecules? A) hemoglobin B) erythrocytes C) globulin D) antigens - CORRECT ANSWERS hemoglobin 91) Which of the following is NOT a reason why randomization is critical in experimental design, especially in experiments with human subjects? A) to give humans no choice but to participate B) to eliminate selection bias C) to provide a statistical basis D) to provide a balanced group of subjects - CORRECT ANSWERS to give humans no choice but to participate 92) Which of the following is the division of the nervous system primarily responsible for regulating all involuntary and subconscious muscle functions? A) somatic nervous system B) autonomic nervous system C) sympathetic nervous system D) peripheral nervous system - CORRECT ANSWERS autonomic nervous system 93) Which of the following is an appendage of a neuron that sends electrical signals away from the neuron cell? A) axon B) dendrite C) neurite D) neuroglia - CORRECT ANSWERS axon 94) Which of the following is the definition of action potential in a neuron? A) a connection between two neurons B) an electrical impulse that is transported down a neuron in response to a stimulus C) an imbalanced electrical charge that exists in an inactive nerve cell D) a chemical signal between two nerve cells - CORRECT ANSWERS an electrical impulse that is transported down a neuron in response to a stimulus 95) Which of the following are the three major portions of the brain? A) cerebellum, spinal cord, white matter B) cerebrum, temporal lobe, occipital lobe C) pons, medulla oblongata, brain stem D) cerebrum, cerebellum, brain stem - CORRECT ANSWERS cerebrum, cerebellum, brain stem 96) Which of the following describes how a catalyst speeds up a reaction? A) a catalyst participates in the reaction, making it go faster B) a catalyst speeds up a reaction by causing lower energy products to be made C) a catalyst lowers the activation energy by providing an alternate route for the reaction D) a catalyst causes the reactants to collide more frequently - CORRECT ANSWERS a catalyst lowers the activation energy by providing an alternate route for the reaction 97) Which of the following is the final vessel through which semen must pass before being expelled from the body? A) ejaculatory duct B) penile urethra C) membranous urethra D) vas deferens - CORRECT ANSWERS penile urethra 98) Which of the following groups of bones are part of the axial skeleton? A) pectoral girdle B) rib cage C) arms and hands D) pelvic girdle - CORRECT ANSWERS rib cage 99) Which of the following types of variables is changed in a scientific experiment? A) controlled variable B) measured variable C) dependent variable D) independent variable - CORRECT ANSWERS independent variable 100) The vertebral column consists of thirty-three vertebrae and is divided into several groups. Which of the following describes the lumbar vertebrae? A) seven vertebrae located in the neck that connect the vertebral column to the skull, allowing for neck rotation B) five vertebrae that are fused in the pelvis, forming a supportive, wedge-shaped bone C) twelve vertebrae located in the upper back, each of which connects to the base of a rib D) five vertebrae located in the lower back, which support most of the body's weight - CORRECT ANSWERS five vertebrae located in the lower back, which support most of the body's weight 101) Which type of hypothesis assumes no relationship between two variables? A) scientific hypothesis B) working hypothesis C) null hypothesis D) alternate hypothesis - CORRECT ANSWERS null hypothesis 102) Which of the following describes the applicability of a research conclusion to situations outside the experiment? A) internal validity B) test validity C) external validity D) content validity - CORRECT ANSWERS external validity 103) Which of the following is NOT one of the three types of muscles found in the human body? A) skeletal B) cardiac C) soft D) smooth - CORRECT ANSWERS soft 104) Which of the following is the structure of the male reproductive system that stores spermatozoa during the maturation process? A) vas deferens B) scrotum C) epididymis D) testicular artery - CORRECT ANSWERS epididymis 105) Which of the following types of hormones stimulates a chemical response to a target cell by diffusing through the cell membrane to bind to the receptors inside the cell? A) fat-soluble hormones B) amino acid derivatives C) hydrophilic hormones D) water-soluble hormones - CORRECT ANSWERS fat-soluble hormones 106) Which of the following is an example of human error in an experiment? A) an imperfectly calibrated scale B) contaminating a sterile sample by breathing on it C) a draft in the laboratory slightly changing the temperature of a liquid D) failure to account for wind speed when measuring distance traveled - CORRECT ANSWERS contaminating a sterile sample by breathing on it Within the biologic hierarchic system of organization, which of the following is least inclusive? A) phylum B) order C) kingdom D) species - CORRECT ANSWERS species In the scientific process, which of the following is a statement or explanation of certain events or happenings? A) hypothesis B) observation C) experiment D) conclusion - CORRECT ANSWERS hypothesis Why is polarity the most important characteristic of water? A) the results of the polarity are hydrogen bonding, a high specific heat value, and its versatile solvent properties B) the results of the polarity are covalent bonding, a low specific heat value, and its versatile solvent properties C) the results of the polarity are ionic bonding, a high specific heat value, and its versatile solvent properties D) the results of the polarity are hydrogen bonding, a low specific heat value, and its versatile solvent properties - CORRECT ANSWERS the results of the polarity are hydrogen bonding, a high specific heat value, and its versatile solvent properties Athletes are often concerned with the question of what they need in their diets to increase muscle mass and strength. What biologic molecule would you recommend that would accomplish this? A) carbohydrates B) proteins C) lipids D) nucleic acids - CORRECT ANSWERS proteins Which organelle would you expect to be present in a cell responsible for detoxifying multiple molecules? A) rough er B) smooth er C) lysosome D) golgi apparatus - CORRECT ANSWERS smooth er A cell from heart muscle would more than likely contain an unusually high proportion of: A) lysosomes B) mitochondria C) mRNA D) ribosomes - CORRECT ANSWERS mitochondria The sum of all chemical reactions that occur in an organism is: A) product B) respiration C) metabolism D) synthesis - CORRECT ANSWERS metabolism A cell that does not contain membrane-bound organelles or a defined nucleus would be classified as: A) eukaryotic B) embryonic C) prokaryotic D) symbiotic - CORRECT ANSWERS prokaryotic The two catabolic pathways that lead to cellular energy production are: A) fermentation and protein synthesis B) cellular respiration and glycolysis C) fermentation and glycolysis D) cellular respiration and fermentation - CORRECT ANSWERS cellular respiration and fermentation Which part of cellular respiration produces the greatest amount of ATP? A) electron transport chain B) glycolysis C) citric acid cycle D) fermentation - CORRECT ANSWERS electron transport chain When plants do not receive enough water, their photosynthetic rate drops. This is because: A) water is a raw material for the light reactions in photosynthesis B) carbon dioxide is not available C) water provides the carbon atoms used to make sugar D) not enough oxygen is produced to keep fermentation running - CORRECT ANSWERS water is a raw material for the light reactions in photosynthesis How does asexual reproduction differ from sexual reproduction? A) asexual reproduction results in all cells being identical to the original cell; sexual reproduction results in half of the cells being identical to the original cell B) asexual reproduction results in two cells that contribute genetic material to daughter cells, resulting in significantly greater variation C) sexual reproduction involves two cells that contribute genetic material to daughter cells, resulting in significantly greater variation D) sexual reproduction involves one cell that yields all cells produced to be identical - CORRECT ANSWERS sexual reproduction involves two cells that contribute genetic material to daughter cells, resulting in significantly greater variation Why is it important for cells to undergo mitosis? A) mitosis allows for reproduction with male and female gametes B) mitosis increases variation within the species C) mitosis produces cells that are different from the parent cell D) mitosis produces cells for growth and repair of body tissue - CORRECT ANSWERS mitosis produces cells for growth and repair of body tissue 72 chromosomes undergo meiosis. How many chromosomes will be in each gamete? A) 18 B) 36 C) 72 D) 144 - CORRECT ANSWERS 36 Which of the following shows how information in transformed to make a protein? A) DNA-RNA-protein B) gene-chromosome-protein C) ATP-amino acid-protein D) RNA-DNA-protein - CORRECT ANSWERS DNA-RNA-protein [Show More]

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