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American Public University: BIOL 133 Exam CH 1-11 Questions with Answers,100% CORRECT
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American Public University: BIOL 133 Exam CH1-6 Questions with Answers,100% CORRECT
American Public University: BIOL 133 Exam CH1-6 Questions with Answers Question 1 of 40 2.5/ 2.5 Points In a chocolate bar with nuts and caramel, ther... [Show More] e are 12 grams of fat, 33 grams of carbohydrates and 4 grams of protein. What percentage of calories comes from fat? • A. 6.5% • B. 19% • C. 53% • D. 41 Feedback:Correct! Question 2 of 40 / 2.5 Points prevent material from moving in or out of the brain’s capillaries • A. Desmosomes • B. Plasmodesmatas • C. Gap junctions • D. Tight junctions Feedback:Learning Objective: Summarize the roles of tight junctions, desmosomes, gap junctions, and plasmodesmata Question 3 of 40 / 2.5 Points If sodium does not move down its gradient in the co-transport pump, what would be the outcome? • A. Sugar would not be affected • B. Sugar would not be able to move down the gradient • C. Sugar would not be able to move up the gradient Feedback:Correct Question 4 of 40 / 2.5 Points When comparing prokaryotes and eukaryotes, flagella • A. aid in structural support • B. aid in phagocytosis • C. are composed of a 9+2 array • D. are use for movement Feedback:Learning Objective: Compare and contrast cilia and flagella Question 5 of 40 / 2.5 Points What protein is matched with its function? • A. aquaporins – move water through the membrane by active transport • B. carrier protein – nonspecific and will allow material to pass directly through • C. channel protein – allow passage of material through the hydrophilic pore • D. transport proteins – allow passage of material with the aid of ATP Feedback:Correct Question 6 of 40 2.5/ 2.5 Points Baking soda can be swallowed to combine with excess hydrogen ions. Baking soda acts as a buffer. True Fals e Question 7 of 40 2.5/ 2.5 Points Which molecules would dissolve in water based on polarity? Select the 3 that apply. A. CH4 B. C2H6 C. C6H6 D. CH3CH2 CH2 CH2 CH2 CH2OH E. C5H10O5 Question 8 of 40 2.5/ 2.5 Points What biological macromolecule provides the initial instructions for the primary sequence of proteins? • A. mRNA • B. tRNA • C. rRNA • D. DNA Feedback:Correct! Question 9 of 40 / 2.5 Points Estrogen and testosterone are structurally related to cholesterol. Based on what you have learned about cholesterol, predict how these steroid hormones signal to the cell. • A. They bind to receptors on the outside of the membrane, which then activate an intracellular signaling cascade. • B. They make the membrane so fluid that small pores appear, allowing them to pass through. • C. They are phagocytosed, degraded, and then released into the cell. • D. They diffuse directly through the plasma membrane and into the cell. Feedback:Correct Question 10 of 40 1.25/ 2.5 Points You are designing a museum exhibit to teach people about cells. In the entrance to the exhibit, visitors riding a moving walkway under flashing lights will gradually “shrink” down in size. To create this illusion, visitors will pass giant models of various biological parts, accompanied by scale bars. Match each model to the appropriate scale bar to go with it. A. 1m B. 10μm C. 1 μm D. 1cm E. 0.1 nm F. 1nm 1. Carbon atom 2. cell nucleus 3. DNA molecule (10bp) 4. human being 5. human eyeball 6. skin cell Feedback:Incorrect, give this question a try again Question 11 of 40 / 2.5 Points Noncompetitive inhibition occurs when • A. a substance binds at the activity site • B. a substance binds on a site away from the active site • C. denaturing an enzyme • D. increasing the activity of an enzyme Feedback:Correct Question 12 of 40 2.5/ 2.5 Points What factors allow a pool of 20 amino acids to produce thousands of unique proteins? (Select the 3 that apply.) A. variation in length of amino acid backbone B. each protein is encoded by a distinct gene C. variation in tertiary structure D. variations in which amino acids are used E. variations in glycosidic linkage F. variations in the type of peptide bond Question 13 of 40 / 2.5 Points Breaking the phosphoanhydride bonds to power calcium transport pumps is an example of? • A. endergonic reactions • B. coupled reactions • C. exergonic reaction Feedback:Incorrect: Learning Objective Text: Describe how energy is released through hydrolysis of ATP Question 14 of 40 2.5/ 2.5 Points What is an example of potential energy? Select all that apply. A. energy in chemical bonds B. concentration gradients C. sound D. light E. heat Question 15 of 40 / 2.5 Points Membrane proteins are able to cross because sections are composed of • A. hydrophilic amino acids. • B. nonpolar phosphate regions • C. polar amino acids • D. hydrophobic amino acids • E. hydrophilic phosphate regions Feedback:Correct Question 16 of 40 / 2.5 Points How does the sodium-potassium pump make the interior of the cell negatively charged? • A. by expelling anions • B. by pulling in anions • C. by expelling more cations than are taken in • D. by taking in and expelling an equal number of cations Feedback:Correct Question 17 of 40 / 2.5 Points If an integrin protein is mutated what cell function might be affected? • A. communication between cytoskeleton and proteglycan • B. fluidity of phospholipids • C. cellular motility • D. cytoplasmic communication Feedback:Correct Question 18 of 40 / 2.5 Points What molecule(s) could diffuse across the plasma membrane? • A. disaccharides • B. Fe2+ • C. tryptophan amino acid • D. CH4 Feedback:Correct Question 19 of 40 / 2.5 Points When viewing the shape of a human cheek cell, what microscope would most likely be used? • A. light • B. dissecting • C. transmission electron • D. scanning electron Feedback:Correct Question 20 of 40 / 2.5 Points What are actin filaments? • A. Cytoskeletal structures of a cell. • B. Modified plasma membranes of a cell. • C. Interconnected membranous sacs of a cell. • D. Darkened areas in the nucleus of a cell. Feedback:Correct Question 21 of 40 2.5/ 2.5 Points A tarantula has eight legs, an arachnid in the order Araneae. A grass spider has eight legs, an arachnid in the order Araneaa. A mouse spider has eight legs, an arachnid in the order Araneae. There is a pattern. All organisms in this order have eight legs. This is inductive reasoning Feedback:inductive Question 22 of 40 2.5/ 2.5 Points Organisms must use macromolecules that have properties to match their functional requirements. In the list below, choose the appropriate macromolecule whose properties meet the requirement. A. glycogen B. cellulose C. RNA D. DNA E. starch 1. Requirement: Strong cell walls Properties: Linear polymer rigid and strong 2. Requirement Stable storage of information Properties: 4 base pairs, not easily hydrolyzed 3. Requirement: Energy storage for seeds Properties: Energy-rich polysaccharides 4. Requirement: Short-term energy storage (animals) Properties: Energy-rich polysaccharide 5. Requirement: Transient transmission of information Properties: 4 base pairs, easily hydrolyzed Feedback:Correct Question 23 of 40 / 2.5 Points What is the function of cholesterol in plasma membranes? • A. regulates fluidity • B. allows ions to pass • C. promotes artherosclerosis • D. regulates pH Feedback:Correct! Question 24 of 40 / 2.5 Points Cholera kills over 100,000 people each year worldwide due to diarrhea. The cholera toxin opens the CFTR chloride channel in the intestines, so that sufferers lose chloride, sodium and massive amounts of water. On the other hand, the same CFTR channel is mutated in cystic fibrosis patients. With activity too LOW, they lack chloride flow and mucus builds up in the lungs. This illustrates the importance of precise control of channel opening, known as regulation. • A. gated • B. ungated • C. passive Feedback:Correct Question 25 of 40 / 2.5 Points The building blocks of nucleic acids are • A. nucleotides. • B. nitrogenous bases. • C. peptides. • D. sugars. Feedback:Correct! Question 26 of 40 2.5/ 2.5 Points Indicate the statements that support the relationship between protein and structure. A. A protein that unfolds or is incorrectly folded can use chaperones to correct the structure. B. when some proteins are denatured, with return of the normal environmental conditions they might refold. C. A proteins final shape is determined by the secondary structure. D. pH, temperature and agitation can denature proteins rendering them active. E. A disease may occur if proteins do not fold correctly. Feedback:Correct Question 27 of 40 / 2.5 Points When the solute concentration in solution 1 is lower than the solute concentration in solution 2, solution 2 is • A. isotonic • B. hypotonic • C. hypertonic Feedback:Correct Question 28 of 40 / 2.5 Points What substance would have the slowest speed of passage across a selectively permeable membrane? • A. nonpolar large molecules • B. nonpolar small molecules • C. large polar molecules • D. small polar molecules Feedback:Correct Question 29 of 40 / 2.5 Points When the solute concentration in solution 1 is lower than the solute concentration in solution 2, solution 2 is • A. isotonic • B. hypotonic • C. hypertonic Feedback:Correct Question 30 of 40 / 2.5 Points Decondensed chromatin is located within the • A. nucleus during cell division • B. nucleolus during maintenance • C. nucleolus during cell division • D. nucleus during cell maintenance Feedback:Correct Question 31 of 40 / 2.5 Points The impermeability of cell plasma membranes is a major barrier to using drugs to kill tumor cells or affect cells transgenically. CPPs are peptides that were discovered to have the ability to transport themselves (and even attached cargo) into cells. How they get into cells is still a mystery, but CPPs all have multiple positively charged groups. Which of the following membrane components are they most likely to be interacting with? • A. cholesterol • B. intrinsic membrane proteins • C. phospholipid tails • D. phospholipid heads Feedback:Correct Question 32 of 40 / 2.5 Points If two solutions are different, the one will the higher concentration of solutes is • A. isotonic • B. hypertonic • C. hypotonic Question 33 of 40 / 2.5 Points The NASA Mars rover has found evidence of water on Mars. This opens the possibility that life may have existed on another planet, perhaps evolving completely independently. “Just think!” says your friend, “Extraterrestrial cells might be totally different than Earth cells. For example, the plasma membranes might be inside out, with the polar heads on the inside and the tails on the outside!” What is your response? • A. “Since the gravity is much lower on Mars, that reduces the constraints on cell size and they are likely to be much bigger – but still with the charged heads on the outside.” • B. “That seems unlikely, since if a cell is in a watery environment, and has a watery cytoplasm, the polar head groups will still be most stable on the outside rather than pushed together.” • C. “Well that happens in specialized cells on Earth too. For instance, adipocytes have these inside-out membranes.” • D. “Yes, anything we’ve learned about how Earth cells work is unlikely to be the same if evolution ran independently.” Feedback:Correct Question 34 of 40 / 2.5 Points According to the 2nd law of thermodynamics, • A. energy cannot be created or destroyed • B. energy transfer creates an ordered system • C. energy transfer increases the disorder of a system • D. energy transfers decrease entropy Feedback:Correct Question 35 of 40 / 2.5 Points Carbon-12, Carbon-13, and Carbon-14 are examples of • A. isomers • B. molecules • C. ions • D. isotopes • E. enantiomers Feedback:Learning Objective: Describe the interrelationship between protons, neutrons, and electrons Question 36 of 40 / 2.5 Points The R group interactions, β-pleated sheets and α-helix structure can be denatured, but what interaction relevant to structure cannot be denatured? • A. ionic bonds • B. hydrogen bonds • C. peptide bonds • D. disulfide bridge • E. hydrophobic interactions Feedback:Correct Question 37 of 40 / 2.5 Points are used for energy storage. • A. Phospholipids • B. Waxes • C. Steroids • D. Triglycerides • E. Cholesterol Feedback:Correct Question 38 of 40 1.67/ 2.5 Points What statement(s) describes a concentration gradient? A. Red blood cells cytoplasm contains a 0.9% salt solution. The extracellular fluid is 1.0%. B. Oxygen in blood plasma is .31 per 100 ml. Oxygen carried with hemoglobin is .69 per 100 ml. C. The temperature inside the car is 39 degrees Celsius and the temperature outside the care is 39 degree Celsius. D. Extracellular fluid contains 13.5 mmol of calcium, and 9 mmol of calcium is in the plasma. Feedback:Incorrect, give this question a try again Question 39 of 40 / 2.5 Points Researchers are working to develop biofuels to free us from dependence on fossil fuels. Based on what you know about cellulose, what do you predict are the major advantage and disadvantage of using cellulose-rich plant material as biofuel? • A. There is not much energy in the glycosidic bonds of cellulose, but at least there is a lot of it. • B. There is not much energy in the peptide bonds of cellulose, but at least it is very easy to break down • C. The breakdown of cellulose into fructose is an endergonic reaction, but an enzyme can reverse the equilibrium. • D. Cellulose is very difficult to break down into glucose, but it contains a lot of energy. Feedback:Correct Question 40 of 40 / 2.5 Points C6H12O6 + 6O2 → 6H2O + 6CO2 is an example of . • A. catabolism • B. anabolism • C. synthesis Feedback:Correct [Show Less]
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American Military University: BIOL 133 Exam 2-Chapters 7-11 Questions with Answers,100% CORRECT
American Military University: BIOL 133 Exam 2-Chapters 7-11 Questions with Answers Part 1 of 1 - 100.0 Points Question 1 of 40 Points If rubis... [Show More] co does not function properly, what process would be affected? • A. ability to reduce NADP+ • B. ability to absorb photons • C. ability to fix carbon • D. ability to split water Feedback: Correct Question 2 of 40 2.5 Points Normal watermelons (n=11) are diploid. A. 22 B. 11 1. How many chromosomes are in a normal watermelon somatic cell? 2. How many chromosomes are in a sperm cell? Feedback: Correct Question 3 of 40 Points The net results of glycolysis are • A. 1 NADH and 1 ATP • B. 2 NADH and 2 ATP • C. 4 NADH and 2 ATP • D. 2 NADH and 4 ATP Feedback: Correct Question 4 of 40 Points If calcium levels are low, cAMP activity increases which leads to synthesis and release of parathyroid hormone. cAMP acts as a(n) • A. enzyme • B. phosphorylating agent • C. ligand • D. second messenger Feedback: Correct Question 5 of 40 Points Which event distinguishes anaphase from anaphase II? • A. Anaphase produces haploid daughter cells and anaphase II results in diploid daughter cells • B. Sister chromatids separated in anaphase II are different while they are identical in anaphase • C. Spindle fibers separate the kinetochores in chromosomes in anaphase. • D. The ploidy level will be reduced in anaphase II. • E. Homologous chromosomes are separated in anaphase and chromosomses are separated in anaphase II Feedback: Correct Question 6 of 40 Points Protein phosphorylating enzymes help regulated gene expression by • A. translation • B. DNA synthesis • C. moving mRNA into the cytoplasm • D. protein activation Feedback: Correct! Question 7 of 40 Points Yeasts life cycle is categorized as • A. Gamete-Zygote • B. Diploid-Dominant • C. Haploid-Dominant • D. Alternation of Generations Feedback: Correct! Question 8 of 40 2.5 Points In which phase are there 92 chromatids? Select all that apply. A. G1 B. S C. Prophase D. Metaphase E. Telophase Feedback: Incorrect: Learning Objective Text: Discuss the behavior of chromosomes during karyokinesis Question 9 of 40 2.5 Points Which event is similar between prophase I and prophase? Select all that apply. A. The nuclear membrane begins to disintegrate B. Spindle fibers appear C. Each chromosome is composed of two chromatids D. Chromosomes condense E. Each chromosome has potentially experienced crossover F. Tetrads are present Feedback: Correct Question 10 of 40 2.5 Points Which event may lead to cancer? Select all that apply. A. gene mutation B. functioning p53 protein C. Rb protein phosphorylating D. Improper replication of DNA during synthesis E. faulty DNA repair Feedback: Learning Objective: Describe how cancer is caused by uncontrolled cell growth Question 11 of 40 Points In a cell with 8 duplicated chromosomes, at which phase do the daughter chromosomes contain single chromatids? • A. Prophase • B. Metaphase • C. Anaphase • D. Telophase • E. Cytokinesis Feedback: Learning Objective: Discuss the behavior of chromosomes during karyokinesis Question 12 of 40 Points Which statement describes the relationship of cancer control genes? • A. Proto-oncogenes and tumor suppressor genes increase cell division • B. Proto-oncogenes and tumor suppressor genes decrease cell division • C. Proto-oncogenes increase cell division and tumor suppressor genes decrease cell division • D. Proto-oncogenes decrease cell division and tumor suppressor genes increase cell division Feedback: Learning Objective: Describe how tumor suppressors function Question 13 of 40 2.5 Points Chromosome duplication occurs for the beginning of which process? Select all that apply. A. mitosis B. meiosis I C. meiosis II D. interkinesis E. cytokinesis Feedback: Incorrect- Learning Objective Text: Explain the differences in meiosis and mitosis. Question 14 of 40 Points In vertebrate immune systems, some t-lymphocytes will make a growth factor that drives their own division. This represents • A. autocrine signaling • B. paracrine signaling • C. direct signaling • D. endocrine signaling Feedback: Incorrect: Learning Objective Text: Describe four types of signaling found in multicellular organisms Question 15 of 40 2.5 Points Damaged DNA can potentially be repaired during which checkpoint. Select all that apply. A. G1 B. S C. G2 D. G0 Feedback: Correct Question 16 of 40 2.5 Points What properties are expressed by wavelengths? Select all that apply. A. Visible light’s wavelengths are between 400-740nm B. Red absorbs little energy C. Green is useful in absorbing light during photosynthesis D. Chlorophyll b absorbs a lot of energy from 460nm wavelengths E. Chlorophyll a reflects red light well Feedback: Correct Question 17 of 40 Points Depolarization of one group of smooth muscle cells rapidly spreads to other smooth muscle cells, leading to coordinated contractions. This electrical coupling is due to • A. autocrine signaling • B. paracrine signaling • C. endocrine signaling • D. direct signaling Feedback: Learning Objective: Describe four types of signaling found in multicellular organisms Question 18 of 40 Points A human fertilized egg contains one chromosome with HbS, the allele for sickle cell disease, and a homologous chromosome with Hbs, the wildtype allele. It also contains an X and Y chromosome. At what point will meiosis occur to create cells that are either HbS or Hbs ? • A. Within the hour, as fertilization proceeds. • B. Within the week, as embryonic development proceeds. • C. Years later, when gametogenesis proceeds. • D. Decades later, in the grandchildren of this individual. Feedback: Correct Question 19 of 40 Points Which event most accurately describes cytokinesis? • A. Cell walls prevent cleavage furrow from deepening. • B. Actin molecules are used to develop the cell plate. • C. The metaphase plate is the beginning area for cytokinesis • D. Phragmoplast develop in animal cells at the metaphase plate. • E. Cytokinesis can begin as early as metaphase. Feedback: Learning Objective: Explain how the cytoplasmic content is divided during cytokinesis Question 20 of 40 2.5 Points In gluconeogenesis, organisms use ATP to make glucose, then in cellular respiration they break down the glucose again to get energy. Why not just store the ATP? (Select all that apply.) A. ATP does not have high-energy bonds. B. ATP is not energy dense enough. C. ATP only has energy after it is activated by glucose. D. ATP only has energy when it is attached to glucose. E. ATP is not stable enough. F. ATP without a cofactor forms crystalline structures. G. Using glucose directly to power enzymes is more efficient. Feedback: Learning Objective: Analyze the reactions of cellular respiration in terms of net energy input and output using critical thinking skills. Question 21 of 40 Points Which describes the relationship between gametes and spores? • A. gametes can fuse to become a zygote, but spores can develop into organisms without forming a zygote • B. gametes, not spores, can only contribute to genetic diversity in populations • C. gametes are always haploid and spores are always diploid • D. gametes come directly from sporophytes to develop into gametophytes Feedback: Learning Objective: Describe the three different life-cycle types among sexual multicellular organisms and their commonalities Question 22 of 40 Points A human sperm will contain chromosomes. • A. 23 • B. 46 • C. 23 pairs of • D. 46 pairs of Feedback: Correct Question 23 of 40 Points What is the minimum number of chiasmata in a tetrad? • A. 1 • B. 2 • C. 3 • D. 4 Feedback: Incorrect: Learning Objective Text: Describe the behavior of chromosomes during meiosis Question 24 of 40 Points The electron transport chain between photosystem II and photosystem I generate a proton gradient which drives ATP synthase known as • A. diffusion • B. chemiosmosis • C. active transport • D. osmosis Feedback: Incorrect: Learning Objective Text: Describe how and where photosynthesis takes place within a plant Question 25 of 40 Points NADH and FADH2 are products of • A. glycolysis • B. chemiosmosis • C. oxidation/reduction reactions • D. substrate level phosphorylation Feedback: Correct Question 26 of 40 Points membranes can be found in a chloroplasts. • A. 1 • B. 2 • C. 3 • D. 4 Feedback: Correct Question 27 of 40 Points What vitamin derivative accepts hydrogen for complex I during ETC? • A. thiamine • B. riboflavin • C. niacin • D. pantothenic acid Feedback: Correct Question 28 of 40 Points What statement describes protein phosphorylation? • A. cyclic AMP is an inhibitor of protein kinase A • B. serine is often phosphorylated • C. dephosphorylation occurs when ATP is regenerated • D. phosphatase catalyzes a transfer of a phosphate Feedback: Learning Objective: Recognize the role of phosphorylation in the transmission of intracellular signals Question 29 of 40 Points What vitamin acts as a coenzyme in cell respiration and is important in alcohol fermentation? • A. thiamine • B. riboflavin • C. niacin • D. pantothenic acid Feedback: Learning Objective: Describe the type of fermentation that readily occurs in animal cells and the conditions that initiate that fermentation Question 30 of 40 Points To efficiently provide the ideal amount of nitrogen fertilizer, some farmers make use of a “chlorophyll meter” that measures the amount of green light reflected off a leaf. Why does this provide an indication of whether the plant may need more or less nitrogen? • A. Nitrogen ions form the electrochemical gradient across the thylakoid membrane that drives ATP synthesis. • B. Beta-carotene is composed largely of nitrogen atoms, and has a similar absorption to chlorophyll. • C. Each chlorophyll molecule contains four nitrogen atoms that surround the Mg2+ ion, and these account for most of the nitrogen in a leaf. • D. Nitrogen gas is green, and photosynthesis uses N2 to run the Calvin cycle. Feedback: Correct Question 31 of 40 Points What is the relationship between cellular aerobic respiration and photosynthesis? • A. The processes occur in the same organelles • B. They use the same reactants and produce the same products • C. They are inverse of each other • D. They are reverse of each other Feedback: Learning Objective: Explain how photosynthesis works in the energy cycle of all living organisms Question 32 of 40 Points When has glucose been broken down from its original 6 carbon molecule to 2 carbon dioxides in the citric acid cycle? • A. oxidation of pyruvate • B. CoA is bound to sulfhydryl group • C. when isocitrate is oxidized to α-Ketoglutarate • D. when α-Ketoglutarate is oxidized to Succinyl CoA • E. condensation of acetyle-CoA with oxaloacetate Feedback: Learning Objective: Explain how a circular pathway, such as the citric acid cycle, fundamentally differs from a linear pathway, such as glycolysis Question 33 of 40 Points Phosphofructokinase, a controlling enzyme of glycolysis, is inhibited by and activated by . • A. ATP;ADP • B. ADP;ATP • C. ADP;NADH • D. NADH;ATP • E. NADH;ADP Feedback: Correct Question 34 of 40 Points When the p53 gene is damaged, which event may happen? • A. Cells can divide uncontrollobly • B. Cells will fix the DNA pass the G1 checkpoint • C. Cells will pass the G2 checkpoint • D. Cells will always undergo apoptosis Feedback: Incorrect- Learning Objective Text: Describe the molecules that control the cell cycle through positive and negative regulation Question 35 of 40 Points P700 first transfers an electron through chlorophyll and a bound • A. quinone • B. ferredoxin • C. 2Fe-2S • D. plastocyanin Feedback: Correct Question 36 of 40 Points carbon dioxide molecules are given off during three turns of the Krebs cycle? • A. 1 • B. 2 • C. 3 • D. 4 • E. 6 Feedback: Incorrect: Learning Objective Text: Explain how a circular pathway, such as the citric acid cycle, fundamentally differs from a linear pathway, such as glycolysis Question 37 of 40 2.5 Points Inositol phopholipids are (select all that apply) A. present in large concentrations in the plasma membrane B. located near membrane-bound receptors C. can be converted to second messengers D. can interact directly with DNA in the nucleus Feedback: Incorrect- Learning Objective Text: Explain how the binding of a ligand initiates signal transduction throughout a cell Question 38 of 40 Points are ligands, which promote cell growth. • A. Apoptosis • B. Inhibitors • C. Growth factors • D. Autoinducers Feedback: Correct! Question 39 of 40 Points If a sperm contains 12 chromosomes, it came from an organism that had • A. 6 chromosomes • B. 12 chromosomes • C. 24 chromosomes • D. 36 chromosomes Feedback: Learning Objective: Describe the structure of prokaryotic and eukaryotic genomes Question 40 of 40 2.5 Points What is not a good biological oxidizing agent? • A. Fe3+ • B. O2 • C. NAD+ • D. FAD Feedback: Correct [Show Less]
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