Georgia Military College BIO 123/ Bio123 Exam 1. 40 Questions and Answers.

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/ ► Exam 1 Question 1 Question text The type of bond between one hydrogen atom and one oxygen atom in a water molecule is _______. Select one: a. a polar covalent bond b. an ionic bond c. hyd... rogen bond d. a nonpolar covalent bond e. a hydrophobic interaction a polar covalent bond Question 2 4 0 qaid=15200902&q 0 Question text What are the six elements that make up living organisms? Select one: a. carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur b. copper, iron, magnesium, sodium, water, zinc c. carbon dioxide, hydrogen, nitrogen, oxygen, phosphate, sulfate d. calcium, hydrogen, iron, potassium, sulfur, water e. aluminum, magnesium, nitrogen, silicon, sodium, sulfur carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur Question 3 Question text 3 0 qaid=15200885&q 0 Why does the molecule shown make plaques along the walls of blood vessels? Select one: a. it is hydrophillic and can trap dust b. it is hydrophobic and would not dissolve in blood fluid c. it is hydrophobic and can repel insects d. it is hydrophillic and likes to stick to blood fluid e. it is hydrophobic and serves as a waterproof barrier it is hydrophobic and would not dissolve in blood fluid Question 4 3 Question text What organelle begins the breakdown of long chain fatty acids, before final breakdown in the mitochondria? Select one: a. rough endoplasmic reticulum b. mitochondria c. smooth endoplasmic reticulum d. lysosomes e. peroxisomes peroxisomes Question 5 0 qaid=15200908&q 0 3 Question text You are trying to determine what an unknown solution is. After mixing with water, you determine that the two liquids do not mix and stay separate. Based on this observation, what conclusion can you make? Select one: a. The unknown solution is adhesive b. The unknown solution is covalent c. The unknown solution is ionic d. The unknown solution is hydrophilic e. The unknown solution is hydrophobic The unknown solution is hydrophobic Question 6 0 qaid=15200910&q 0 3 Question text What type of reaction removes a hydroxyl group and a hydrogen atom from two molecules to join them together? Select one: a. a dehydration reaction b. a hydrophilic reaction c. a monomer reaction d. a polymer reaction e. a hydrolysis reaction a dehydration reaction Question 7 0 qaid=15200877&q 0 3 Question text Which structure can occupy up to 90% of the volume in a plant cell? Select one: a. central vacuole b. endoplasmic reticulum c. nucleus d. chloroplasts e. cytoplasm central vacuole Question 8 0 qaid=15200903&q 0 3 Question text What kingdom is characterized by eukaryotic, multicellular organisms that ingest their food? Select one: a. Fungi b. Plants c. Protists d. Animals e. Archaea Animals Question 9 0 qaid=15200887&q 0 4 Question text What type of bond occurs between positively and negatively charged atoms? Select one: a. covalent bond b. adhesive interaction c. hydrogen bond d. ionic bond e. hydrophobic interaction ionic bond Question 10 0 qaid=15200896&q 0 4 Question text Which organelle is physically connected to the nuclear envelope? Select one: a. Golgi apparatus b. mitochondria c. endoplasmic reticulum d. nucleolus e. lysosome endoplasmic reticulum Question 11 0 qaid=15200906&q 0 3 Question text What level of protein structure is associated with alpha helix and pleated sheet? Select one: a. primary b. secondary c. quaternary d. tertiary e. dipeptide secondary Question 12 0 qaid=15200882&q 0 4 Question text What is the basic unit of structure and function for all life? Select one: a. atom b. molecule c. cell d. organ e. organism cell Question 13 0 qaid=15200894&q 0 3 Question text Ions located in bones and teeth that are also important in muscle contractions and nerve conduction are ________. Select one: a. sodium b. chloride c. bicarbonate d. potassium e. calcium calcium Question 14 0 qaid=15200886&q 0 3 Question text What is hydrochloric acid classified as an acid? Select one: a. it absorbs excess hydroxide ions from the solution b. it dissociates to release hydroxide ions c. it dissociates to release hydrogen ions and absorbs excess hydroxide ions from the solution d. it absorbs excess hydrogen ions from the solution e. it dissociates to release hydrogen ions it dissociates to release hydrogen ions and absorbs excess hydroxide ions from the solution Question 15 0 qaid=15200876&q 0 3 Question text What is the most significant function of the Golgi apparatus? Select one: a. secreting proteins b. transporting proteins c. packaging proteins d. synthesizing proteins e. lipid synthesis lipid synthesis Question 16 0 qaid=15200900&q 0 4 Question text Where are lipids synthesized outside of the endomembrane system? Select one: a. smooth endoplasmic reticulum b. rough endoplasmic reticulum c. Golgi apparatus d. nucleus e. mitochondria mitochondria Question 17 0 qaid=15200911&q 0 3 Question text What structure allows for sperm mobility in mammals? Select one: a. pseudopod b. cilium c. actin filament d. intermediate filament e. flagellum flagellum Question 18 0 qaid=15200892&q 0 4 Question text How many electrons are in the valence shell of the phosphorus atom above? Select one: a. 2 b. 4 c. 5 d. 6 e. 8 5 0 qaid=15200893&q 0 3 Question 19 Question text What would be the result of a cell that did not have RNA molecules? Select one: a. The DNA would take over its job b. The cell would not have genes c. There would be no effect on the cell d. The cell could not make energy e. The cell would not be able to make proteins The cell would not be able to make proteins Question 20 0 qaid=15200909&q 0 4 Question text What is the term for a specific combination of bonded atoms which always react in the same way? Select one: a. a hydrophilic group b. a hydrophobic group c. an organic group d. a functional group e. a covalent group a functional group Question 21 0 qaid=15200880&q 0 4 Question text How do amino acids differ from one another? Select one: a. amino group b. carbonyl group c. phosphorous content d. calcium content e. R group R group Question 22 0 qaid=15200912&q 0 4 Question text The four rings in the molecule above contain only carbon and hydrogen atoms. What type of molecule is this? Select one: a. steroid b. fatty acid c. amino acid d. nucleotide e. phospholipid steroid 0 qaid=15200889&q 0 3 Question 23 Question text Why is sickle cell disease more common in Americans with African ancestors than Americans with European ancestors? Select one: a. Sickle-shaped blood cells caused malarial parasites to die, and thus gave protection against malarial infections prevalent in Africa b. Sickle-shaped blood cells were good hosts for tuberculosis, and thus spread tuberculosis widely throughout Africa c. Sickle-shaped blood cells caused cholera bacteria to die, and thus gave protection against largescale cholera epidemics throughout Europe d. Sickle-shaped blood cells caused tuberculosis bacteria to die, and thus gave protection against large-scale Tb epidemics throughout crowded areas in Africa e. Sickle-shaped blood cells were good hosts for cholera bacteria, and thus caused many people to die from cholera and diarrhea 0 qaid=15200898&q 0 3 Sickle-shaped blood cells caused malarial parasites to die, and thus gave protection against malarial infections prevalent in Africa Question 24 Question text Where are the majority of ribosomes found inside the cell? Select one: a. cytoskeleton b. nuclear envelope c. smooth endoplasmic reticulum d. rough endoplasmic reticulum e. mitochondria 0 qaid=15200875&q 0 3 rough endoplasmic reticulum Question 25 Question text Each of the following is a defining characteristic of life except _______. Select one: a. disorder b. use of materials and energy c. reproduction d. homeostasis e. responsiveness to stimuli disorder Question 26 0 qaid=15200879&q 0 3 Question text Using the plant cell diagram, identify the cell structure marked "d." Select one: 0 qaid=15200901&q 0 3 a. central vacuole b. smooth endoplasmic reticulum c. nucleus d. cytoplasm e. Golgi apparatus cytoplasm Question 27 Question text Which of the following is not a part of the cell theory? Select one: a. the cell is the basic unit of life 0 qaid=15200895&q 0 3 b. all living things are made of cells c. new cells arise only from preexisting cells d. anything smaller than a cell is not alive e. only eukaryotes are made of cells only eukaryotes are made of cells Question 28 Question text What is the result of unequal sharing of electrons between two atoms? Select one: a. a nonpolar molecule, such as methane b. an ionic compound, such as salt 0 qaid=15200904&q 0 3 c. an electronegative molecule, such as calcium ion d. a hydrophobic molecule, such as fat e. a polar molecule, such as water a polar molecule, such as water Question 29 Question text Which cytoskeletal fibers make up the internal structure of the cilia and flagella? Select one: a. keratin filaments b. microtubules c. intermediate filaments 0 qaid=15200905&q 0 3 d. actin filaments e. myosin microtubules Question 30 Question text Which of the following would be explainable due to something other than the descent of living things from one common ancestor? Select one: a. Life is organized. b. Life is photosynthetic. c. Life is homeostatic. 0 qaid=15200873&q 0 3 d. Life forms ecosystems. e. Life evolves. Life is photosynthetic. Question 31 Question text What is the function of cristae in the inner membrane of mitochondria? Select one: a. allow sunlight to penetrate easily and quicken photosynthesis b. promote the concentration of chlorophyll molecules in one area c. allow direct diffusion of glucose into the inside of the mitochondria d. collect water molecules needed for metabolism 0 qaid=15200878&q 0 3 e. provide larger surface area for ATP synthesis provide larger surface area for ATP synthesis Question 32 Question text Which of the following is true of ATP? Select one: a. It is used for long term energy storage b. It has a base of adenine, the sugar ribose, and three phosphate groups c. It contains adenine, ribose, and two phosphate groups d. It has a base of adenine, the sugar deoxyribose, and three phosphate groups e. It is very stable) 0 qaid=15200874&q 0 3 It has a base of adenine, the sugar ribose, and three phosphate groups Question 33 Question text What type of organism uses chitin for structure and support? Select one: a. bacterium b. cactus c. human d. tree e. crab crab 0 qaid=15200897&q 0 4 Question 34 Question text Which of the following is likely to not be found in a phospholipid? Select one: a. a nonpolar head b. two fatty acids c. a phosphate group d. some nonpolar tails e. a glycerol group a nonpolar head Question 35 0 qaid=15200907&q 0 3 Question text What type of sugar is transported in plants and used as table sugar? Select one: a. sucrose b. glucose c. lactose d. galactose e. fructose sucrose Question 36 0 qaid=15200891&q 0 4 Question text What type of cell would have lysosomes and a nucleus, but no chloroplasts? Select one: a. bacterial cell b. archaean cell c. animal cell d. plant cell e. prokaryotic cell animal cell Question 37 0 qaid=15200884&q 0 3 Question text Each of the following could be studied as organic biomolecules except ______. Select one: a. nucleic acids b. carbohydrates c. water d. lipids e. proteins water Question 38 0 qaid=15200890&q 0 3 Question text What level of protein structure is found in most enzymes and hemoglobin? Select one: a. dipeptide b. primary c. tertiary d. quaternary e. secondary quaternary Question 39 0 qaid=15200881&q 0 4 Question text Where is the site for breakdown of engulfed bacteria, debris and macromolecules in an animal cell? Select one: a. peroxisomes b. rough endoplasmic reticulum c. lysosomes d. mitochondria e. smooth endoplasmic reticulum lysosomes Question 40 0 qaid=15200888&q 0 3 Question text _______ is an atom with an unequal number of protons and electrons. Select one: a. An isotope b. An ion c. A compound d. An octet e. A valance An ion Bottom of Form [Show More]

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