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TCC Nebauer Ch5 Quiz

QuestionAnswer
Which of the following is temporarily formed during an enzymatic reaction? A. a coenzyme B. the enzyme-substrate complex C. a proton gradient D. activation energy the enzyme-substrate complex
purpose of the Calvin-Benson cycle B glucose to pyruvic acid using enzymes different from those of glycolysis C transfer of an amine group from one amino acid to another D the production of glyceraldehyde-3-phosphate by fixation of CO2 molecules the production of glyceraldehyde-3-phosphate by fixation of CO2 molecules
In eukaryotic cells, all of the following processes occur in the mitochondrion EXCEPT: A. the Krebs cycle B. electron transport C. glycolysis D. beta-oxidation glycolysis
NADH generated during cellular respiration results in the production of how many ATP? A. 30 B. 4 C. 38 D. 34 30
Which of the following enzymes might be expected to catalyze the removal or addition of electrons of other molecules? A. an oxidoreductase B. a transferase C. a ligase D. an isomerase an oxidoreductase
true about chlorophyll EXCEPT: A magnesium ion is mjor part chlorophyll molecule B Chlorophyll molecules work by absorbing light C photosynthetic organisms use same chlorophyll D The active site of chlorophyll molecule is similar to a cytochrome mole All photosynthetic organisms use the same type of chlorophyll
All of the following could be considered precursor metabolites EXCEPT ____________________. A. glyceraldehyde-3-phosphate. B. acetyl-CoA. C. fats. D. ribose-5-phosphate. fats
All of the following are byproducts of fermentation EXCEPT ____________________. A. pyruvic acid. B. ethanol. C. acetic acid. D. lactic acid. pyruvic acid
Many vitamins are important for metabolism because they act as ____________________. A. apoenzymes. B. holoenzymes. C. ribozymes. D. coenzymes coenzymes
Changes in pH have an adverse effect on the shape of an enzyme because pH affects which levels of protein structure? A. Primary structure B. Secondary structure C. Tertiary structure D. Both B and C are correct. E. A, B, and C are correct. Both B and C are correct
following best describes the function of a photosystem A absorption of light and conversin to ATP and NADPH B The generation of glucose from CO2 & H2O C making NADH and FADH2 from oxidation of acetyl-CoA D generation of a proton gradient to produce The absorption of light energy and its conversion to ATP and NADPH
What is the major function of fermentation? A. The production of ADP B. The regeneration of NAD+ for glycolysis C. The generation of a proton gradient D. The reduction of glucose The regeneration of NAD+ for glycolysis
All of the following are electron carrier molecules that are important for cellular redox reactions EXCEPT: A. FAD B. NAD+ C. TCA D. NADP+ TCA
Sulfanilamide is a drug which interferes with bacterial enzymes in which of the following ways? A. competitive inhibition B. noncompetitive inhibition C. feedback inhibition D. end-product inhibition competitive inhibition
Beta-oxidation is a method of catabolizing which of the following molecules? A. proteins B. fatty acids C. glucose D. glycerol fatty acids
The cellular process of linking chemical building blocks together into macromolecules is called ____________________. A. Oxidation B. Catabolism C. Metabolism D. Polymerization Polymerization
All of the following are associated with the process of glycolysis EXCEPT ____________________. A. production of NADPH. B. phosphorylation of glucose. C. substrate-level phosphorylation. D. production of pyruvic acid production of NADPH
Dehydrogenation reactions are an example of which of the following? A. activation reactions B. oxidation reactions C. reduction reactions D. endergonic reactions oxidation reactions
Activation energy ____________________. A. is the same for all chemical reactions. B. can be achieved by lowering the temperature of a reaction. C. is the amount of energy it takes to trigger a chemical reaction. D. is higher in the presence of an is the amount of energy it takes to trigger a chemical reaction
All of the following processes are ways in which a cell can use a proton gradient EXCEPT ____________________. A. active transport. B. flagellar motion. C. electron transport. D. ATP production electron transport
Created by: sarah.teacher36
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