Sophia Human Biology Milestones 1 Questions/Answers ;Strayer University A Grade Solved Solutions

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Sophia Human Biology Milestones 1 Questions/Answers ;Strayer University A Grade Solved Solutions Sophia Human Biology Milestone 1 1 Which of the following is a biological class? Mammalia ... Chordata Animalia Ursidae CONCEPT Organisms 2 Which statement is true? In eukaryotic cells, DNA floats freely in the cytoplasm. Prokaryotic cells don't have a plasma membrane. All cells have DNA. Prokaryotic cells don't have DNA. CONCEPT Cell Theory 3 Which is a component of cellular respiration? Glycolysis ATP breakdown Facilitated diffusion Meiosis CONCEPT Mitochondria 4 Which organelle is mainly responsible for synthesizing proteins? Smooth ER Golgi body Ribosomes Nuclear envelope CONCEPT Endoplasmic Reticulum 5 What is true about the electron transport chain (ETC)? The largest byproduct of the electron transport chain is carbon dioxide. The electron transport chain is the second stage of cellular respiration. During the electron transport chain, a hydrogen gradient is produced that is used to produce ATP from ADP. The electron transport chain produces 36 net molecules of ATP. CONCEPT Electron Transport Chain 6 What type of lipid is made up of a glycerol molecule and three fatty acid side chains? Sterol Triglyceride Saturated fat Phospholipid CONCEPT Lipids 7 How many turns of the Krebs cycle are required to break down one molecule of glucose? One Two Three Four CONCEPT Krebs Cycle 8 At what level of protein structure do amino acid chains twist and fold? Secondary Primary Tertiary Quaternary CONCEPT Proteins 9 Which of the following is a characteristic of the nucleus? It houses the cell's DNA. It is a double membrane that surrounds the nuclear envelope. It is not found in eukaryotic cells. It is a pocket in the cell's plasma membrane that houses DNA. CONCEPT Nucleus 10 What is the cytosol? The protein structure that provides support to the cell A part of the plasma membrane between the two layers of phospholipids The liquid found inside the cytoplasm that is mostly composed of water A part of the cytoskeleton that helps anchor membrane proteins CONCEPT Cytoplasm 11 Which of the following statements is true? Diffusion involves the movement of molecules using transport proteins. Diffusion involves the breaking down of dead organelles. Diffusion involves the movement of molecules into or out of a cell. Diffusion involves the movement of molecules in the cytoplasm. CONCEPT Diffusion 12 Which set of statements is true concerning the plasma membrane? It is primarily composed of cellular fiber and it controls what enters and leaves the nucleus. It is primarily composed of lipids and it keeps anything from entering or leaving the cell. It is primarily composed of lipids and it controls what enters and leaves the cell. It is primarily composed of proteins and nucleic acids, and it controls what enters and leaves the cell. CONCEPT Plasma Membrane 13 In which kind of cells is the Golgi body found? All cells Some eukaryotic and some prokaryotic cells Only eukaryotic cells Only prokaryotic cells CONCEPT Golgi Body 14 Which of the following statements is true? Glycolysis requires oxygen to happen. Glycolysis breaks a molecule of glucose into two phospholipids. Glycolysis occurs within the rough ER. Glycolysis has a net gain of two ATP. CONCEPT Glycolysis 15 Which of the following describes a disaccharide? It can have up to two sugar units. It has many sugar units. It has no sugar units. It is also an oligosaccharide. CONCEPT Carbohydrates 16 Which of the following is part of a nucleotide? Proteins DNA Amino acid Sugar CONCEPT Nucleic Acids 17 Which of the following sources of information is most credible? A high school biology textbook written and reviewed by a team of biology professors An unbacked statement from a trusted friend Medical advice given by a nursing intern during an appointment A lecture given by a biology teacher on the first day of class CONCEPT Evaluate Information 18 Which of the following statements about enzymes is true? Enzymes are composed primarily of carbohydrates. The function of an enzyme is to speed up chemical reactions that occur in your body. Enzymes are single-use proteins that must be regenerated after each reaction. Enzymes can only break down larger substances into smaller ones. CONCEPT Enzymes 19 What molecules in the cell membrane help move molecules from a low to a high concentration gradient? Endocytosis Vesicles Transport proteins Diffusion pumps CONCEPT Facilitated Diffusion 20 Which of the following is an example of an integrator working to maintain homeostasis? The brain processes information about blood calcium levels being too high and determines that calcium levels need to be lowered. The heart begins pumping faster if blood pressure drops too low. Muscle cells cause you to shiver in an attempt to raise your body temperature if it is too low. Thermoreceptors in your body detect a change in temperature when you walk into an air-conditioned building. CONCEPT Homeostasis 21 Select the statement that is TRUE regarding metabolism. In catabolism, complex carbs, proteins and other molecules are disassembled. In anabolism, polysaccharides are turned into monosaccharides. In catabolism, glucose is combined to form a complex carbohydrate. In anabolism, complex carbs, proteins and other molecules are disassembled. CONCEPT Metabolism 22 When solute concentration is equal inside and outside of a cell, it is __________. hypotonic hypertonic selectively permeable isotonic CONCEPT Osmosis 23 Chris is trying to determine whether the brand of coffee he drinks has an impact on his productivity. Which of the following could be his prediction? "I notice that I'm more productive on days when I drink Coffee A." "Based on many tests, I realize that Coffee A does not actually boost my productivity." "I predict that I'll be more productive on days when I drink Coffee A." "I propose that Coffee A somehow boosts my productivity." CONCEPT Scientific Method [Show More]

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