Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 7SQ
Which of the following statements is not true?
- a. occur in a stepwise series of
chemical reactions - b. are speeded up by enzymes
- c. may break down or assemble molecules
- d. always produce energy (such as ATP)
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Which of the following statements concerning metabolism and metabolic reactions is
CORRECT?
A. Anabolism and catabolism are two terms with the same meaning
B. Some, but not all, metabolic reactions involve catabolism
C. Energy is a by-product of all metabolic reactions
D. No correct response
Which of the following is a primary function of the active site of an enzyme?
a.
It binds allosteric regulators of the enzyme.
b.
It binds noncompetitive inhibitors of the enzyme.
c.
It catalyzes the reaction associated with the enzyme.
d.
It is activated by the presence of the end product of the metabolic pathway in which the enzyme is involved.
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Which of the following statement about the mass spectrometry is true?
a.
Large amount of protein sample is needed for mass spectrum, and thus it is very expensive.
b.
It is a powerful method to determine the 3-dimensional structure of proteins.
c.
It can be sued for protein location in a living cell.
d.
It can be used to measure the molecular weight of proteins.
e.
It can be used to determine the stability of a protein structure in solution.
Clear my choice…
Inactive precursors to enzymes are called:
a. Zymogen
b. Apoenzyme
c. Cofactor
d. Isozymes
Chapter 3 Solutions
Human Biology (MindTap Course List)
Ch. 3 - Describe the general functions of the following in...Ch. 3 - Which organelles are in the endomembrane system?Ch. 3 - Distinguish between the following pairs of terms:...Ch. 3 - What do enzymes do in metabolic reactions?Ch. 3 - In aerobic cellular respiration, which reactions...Ch. 3 - For the diagram of the aerobic pathway shown in...Ch. 3 - The plasma membrane __________. a. surrounds the...Ch. 3 - The _________ is responsible for a eukaryotic...Ch. 3 - Cell membranes consist mainly of a _________. a....Ch. 3 - Prob. 4SQ
Ch. 3 - The passive movement of a solute through a...Ch. 3 - Match each organelle with its correct function.Ch. 3 - Which of the following statements is not true?...Ch. 3 - Enzymes _______. a. enhance reaction rates b. are...Ch. 3 - Match each substance with its correct descriptionCh. 3 - Cellular respiration is completed in the ______....Ch. 3 - Prob. 11SQCh. 3 - In a mitochondrion, where are the electron...Ch. 3 - Prob. 1CTCh. 3 - Jogging is considered aerobic exercise because the...Ch. 3 - Section 3.17 mentions that arsenic poisons human...Ch. 3 - The cells of your body never use nucleic acids as...
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- Which of the following statements concerning metabolic pathways is INCORRECT? a. Metabolic pathways always involve a series of consecutive reactions b. All cyclic metabolic pathways regenerate the starting material for the pathway c. All linear metabolic pathways generate a final product D. No correct responsearrow_forwardThe following type of metabolic reaction breaks down a polymer (large structure) into monomers (small repeating building blocks or individual units): O a Homeostasis O b. Catabolism OC. Anabolism O d. Aerobic Oe. Anaerobicarrow_forwardThe following type of metabolic reaction add together monomers (small repeating building blocks or individual units) into a polymer (large structure): O a Homeostasis Ob. Catabolism O c. Anabolism O d. Aerobic Oe. Anaerobicarrow_forward
- The production of ATP (cellular respiration) is actually a(n) rxn. However, the reaction requires the of Glucose. A. catabolic : anabolism B. anabolic : catabolism C. exergonic : endergonic conversion D. hydrolytic : dehydrationarrow_forwardWhich of the following is true of metabolism? A. Degradative reactions require an input of energy. B. Synthetic pathways are anabolic. C. Catabolism and anabolism are linked by O2. D. Catabolic reactions require the breakdown of ATP, and anabolic reactions generate ATP.arrow_forwardWhich of the following statement is INCORRECT about metabolism? A. is the sum of all chemical reactions in a cell B. involves the flow of energy and rearrangement of atoms C. anabolism breaks down large molecule to small molecule D. catabolism generates energy via oxidative processesarrow_forward
- Cellular respiration is best described by which of the following? A. Catabolic Reaction B. Anabolic Reaction C. Exchange Reaction D. Both A & Carrow_forwardWhich of the following statements concerning the location of the metabolic pathways is correct? a. All reactions of the glycolysis take place in the mitochondria. b. All reactions of the TCA cycle take place in the mitochondria. c. Some reactions of the TCA cycle take place in the cytosol, and some in mitochondria. d. Some reactions of the glycolysis take place in the cytosol, and some in mitochondria.arrow_forwardWhich of the following metabolic pathways do most (anaerobic and aerobic) life forms have? Select one: a. glycolysis b. oxidative phosphorylation as part of cellular respiration c. the Kreb's cycle (citric acid cycle) d. photosynthesisarrow_forward
- The fermentation of glucose . . . A produces less ATP than respiration. B always results in alcohol production. C only occurs in bacteria. D is accomplished by mitochondrial enzymes.arrow_forwardWhat roles do enzymes play in nature? Group of answer choices A.They have a role in metabolic reactions B. They increase rates of reaction but do not shift the equilibrium formed between products and reactants C. They catalyze cellular processes D. All of the abovearrow_forwardHomeostatic systems maintain a steady-state set point over time using negative feedback. Which one of the following statement is NOT TRUE for stability of metabolic system: Select one: a. Step changes in a controlled variable will return the system to its original state using negative feedback b. Metabolic systems that oscillate must have multiple control variables c.A positive feedback system is stable over time, maintaining a steady state d. Perturbations from steady state, either positive or negative, result in recovery reactions that returm the system to is original state.arrow_forward
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