Question 1

The light-harvesting units in the thylakoid membranes are the ______.

Accepted Answer

A)  ATP synthases
B)  electrons
C)  ATP molecules
D)  photosystems
E)  granaF) B) and D)
G) B) and E)

Question 2

All organisms that are photosynthetic are oxygenic.

Accepted Answer

A) True 
 B)False

Question 3

The best way to control a metabolic pathway is to control the fastest enzyme in the series.

Accepted Answer

A) True 
 B)False

Question 4

The property of organisms to integrate catabolic and anabolic pathways to improve cell efficiency is called ______.

Accepted Answer

A)  metabolism
B)  amphibolism
C)  anabolism
D)  catabolism
E)  biosynthesisF) B) and C)
G) A) and E)

Question 5

Reduction of nitrogen-oxygen ions and compounds by some bacteria is called ______.

Accepted Answer

A)  aerobic respiration
B)  denitrification
C)  nitrification
D)  fermentation
E)  deaminationF) A) and B)
G) All of the above

Question 6

The majority of NADH is produced in ______.

Accepted Answer

A)  glycolysis
B)  the Krebs cycle
C)  the electron transport system
D)  photosynthesis
E)  fermentationF) A) and B)
G) B) and C)

Question 7

Which of the following metabolic system descriptions is mismatched?

Accepted Answer

A)  Cyclic - the starting molecule is regenerated to initiate another turn
B)  Convergent - a linear pathway branches into two or more alternative processes
C)  Linear - the product of enzyme A becomes the substrate for enzyme B
D)  Divergent - one or more branches deviate from a linear pathE) A) and B)
F) All of the above

Question 8

Intermediates from the Krebs cycle can be converted to amino acids by the process of ______.

Accepted Answer

A)  amination
B)  deamination
C)  phosphorylation
D)  beta oxidation
E)  gluconeogenesisF) All of the above
G) D) and E)

Question 9

Metabolic pathways that regenerate their starting molecule are called _____ pathways.

Accepted Answer

A)  linear
B)  bidirectional
C)  convergent
D)  cyclic
E)  divergentF) A) and C)
G) B) and D)

Question 10

Important components of coenzymes are _______.

Accepted Answer

A)  vitamins
B)  metallic ions
C)  active sites
D)  substrates
E)  ribozymesF) D) and E)
G) A) and D)

Question 11

The bacterial genus Bacillus can utilize starch as a nutrient by splitting the starch molecule into smaller molecules of glucose with the addition of water.The enzymes to do this would be classified as ______.

Accepted Answer

A)  transferases
B)  oxidoreductases
C)  ligases .
D)  hydrolases
E)  isomerasesF) A) and B)
G) A) and C)

Question 12

The formation of citric acid from oxaloacetic acid and an acetyl group begins ______.

Accepted Answer

A)  glycolysis
B)  the electron transport system
C)  the Krebs cycle
D)  fermentation
E)  oxidative phosphorylationF) B) and E)
G) D) and E)

Question 13

Glycolysis uses 2 ATP and produces

Accepted Answer

A)  2 ATP only if oxygen is present.
B)  2 ATP without oxygen.
C)  4 ATP only if oxygen is present.
D)  4 ATP without oxygen.E) A) and B)
F) A) and C)

Question 14

Reactants are converted to products by

Accepted Answer

A)  enzymes releasing energy.
B)  breaking and forming bonds.
C)  enzymes binding to products.
D)  reactants always releasing energy.E) A) and B)
F) None of the above

Question 15

Which of the following characterize the Calvin cycle?

Accepted Answer

A)  A process that requires light
B)  Nitrogen is fixed into an organic form
C)  Produces glucose as an end product
D)  Produces carbon dioxide and water
E)  Produces oxygenF) A) and C)
G) B) and E)

Question 16

A holoenzyme is a combination of a protein and one or more substances called ______.

Accepted Answer

A)  substrates
B)  apoenzymes
C)  catalysts
D)  cofactors
E)  ribozymesF) A) and E)
G) None of the above

Question 17

Which of the following is not a photosynthetic pigment?

Accepted Answer

A)  Carotenoid
B)  Leukophyll
C)  Phycobilin
D)  ChlorophyllE) A) and C)
F) B) and C)

Question 18

Often the mnemonic device "OIL RIG" is used to remember the principles of redox reactions.Oxidation Is Loss and Reduction Is Gain of what?

Accepted Answer

A)  Electrons only
B)  Hydrogen only
C)  Oxygen only
D)  Electrons and hydrogen
E)  Oxygen and electronsF) B) and C)
G) A) and E)

Question 19

Only yeast produce alcohol as a fermentation product.

Accepted Answer

A) True 
 B)False

Question 20

The relationship between the light-dependent and light-independent reactions in photosynthesis is that

Accepted Answer

A)  the ATP made during the light-dependent reactions is used for the growth and development of the cell and the ATP from the oxidation of glucose drives the light reactions.
B)  the light-independent reactions are driven by the ATP and NADPH generated from the light reactions.
C)  the energy stored in the glucose made during the Calvin cycle is used to drive the light reactions.
D)  the light-dependent and light-independent reactions both take place within the membranes of bacterial cells or thylakoid membranes of chloroplasts.E) All of the above
F) None of the above

Exam 8: Microbial Metabolism: The Chemical Crossroads of Life

Reactants are converted to products by

Correct AnswerverifiedShow Answer

Which of the following is not a photosynthetic pigment?

Correct AnswerverifiedShow Answer

The bacterial genus Bacillus can utilize starch as a nutrient by splitting the starch molecule into smaller molecules of glucose with the addition of water.The enzymes to do this would be classified as ______.

Correct AnswerverifiedShow Answer

Which of the following characterize the Calvin cycle?

Correct AnswerverifiedShow Answer

The relationship between the light-dependent and light-independent reactions in photosynthesis is that

Correct AnswerverifiedShow Answer

The majority of NADH is produced in ______.

Correct AnswerverifiedShow Answer

Intermediates from the Krebs cycle can be converted to amino acids by the process of ______.

Correct AnswerverifiedShow Answer

The light-harvesting units in the thylakoid membranes are the ______.

Correct AnswerverifiedShow Answer

The property of organisms to integrate catabolic and anabolic pathways to improve cell efficiency is called ______.

Correct AnswerverifiedShow Answer

Important components of coenzymes are _______.

Correct AnswerverifiedShow Answer

All organisms that are photosynthetic are oxygenic.

Correct AnswerverifiedShow Answer

Reduction of nitrogen-oxygen ions and compounds by some bacteria is called ______.

Correct AnswerverifiedShow Answer

Only yeast produce alcohol as a fermentation product.

Correct AnswerverifiedShow Answer

Often the mnemonic device "OIL RIG" is used to remember the principles of redox reactions.Oxidation Is Loss and Reduction Is Gain of what?

Correct AnswerverifiedShow Answer

A holoenzyme is a combination of a protein and one or more substances called ______.

Correct AnswerverifiedShow Answer

The best way to control a metabolic pathway is to control the fastest enzyme in the series.

Correct AnswerverifiedShow Answer

Metabolic pathways that regenerate their starting molecule are called _____ pathways.

Correct AnswerverifiedShow Answer

The formation of citric acid from oxaloacetic acid and an acetyl group begins ______.

Correct AnswerverifiedShow Answer

Which of the following metabolic system descriptions is mismatched?

Correct AnswerverifiedShow Answer

Glycolysis uses 2 ATP and produces

Correct AnswerverifiedShow Answer

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