Question 1

A net gain of four ATP are produced during glycolysis from the conversion of a single glucose to two pyruvate molecules during the Embden- Meyerhof pathway.

Accepted Answer

A) True 
 B)False

Question 2

What is denitrification?

Accepted Answer

A)  The reduction of nitrate to dinitrogen. 
B)  The production of nitrate from ammonia. 
C)  The reduction of dinitrogen to nitrate. 
D)  The assimilation of nitrate by the cell. 
E)  The assimilation of ammonia by the cell. 
A)  The reduction of nitrate to dinitrogen. 
B)  The production of nitrate from ammonia. 
C)  The reduction of dinitrogen to nitrate. 
D)  The assimilation of nitrate by the cell. 
E)  The assimilation of ammonia by the cell.

Question 3

Which of these occurs in anaerobic respiration,but not in aerobic respiration?

Accepted Answer

A)  A fermentation product is produced. 
B)  The terminal cytochrome oxidase is replaced by a cytochrome reductase. 
C)  Glucose is only partially oxidized to CO₂. 
D)  NADH dehydrogenase is replaced by NADH oxidase. 
E)  Glycolysis. 
A)  A fermentation product is produced. 
B)  The terminal cytochrome oxidase is replaced by a cytochrome reductase. 
C)  Glucose is only partially oxidized to CO₂. 
D)  NADH dehydrogenase is replaced by NADH oxidase. 
E)  Glycolysis.

Question 4

Lactic acid is a common fermentation product.It is produced when ___________ is reduced by electrons received from NADH.

Accepted Answer

A)  ethanol 
B)  glucose 
C)  pyruvate 
D)  acetyl-CoA 
E)  3-phosphoglyceraldehyde 
A)  ethanol 
B)  glucose 
C)  pyruvate 
D)  acetyl-CoA 
E)  3-phosphoglyceraldehyde

Question 5

The purple sulfur bacteria produce reducing power during the light reactions of photosynthesis by what process?

Accepted Answer

A)  cyclic photophosphorylation 
B)  the Calvin cycle 
C)  reverse electron flow 
D)  the reverse TCA cycle 
E)  the Parnas pathway 
A)  cyclic photophosphorylation 
B)  the Calvin cycle 
C)  reverse electron flow 
D)  the reverse TCA cycle 
E)  the Parnas pathway

Question 6

The pentose phosphate pathway is important for producing the intermediate ribose-5-phosphate for the synthesis of __________________.

Accepted Answer

The answer of The pentose phosphate pathway is important for...

Question 7

The most common carbon dioxide fixation pathway used by cyanobacteria is the Calvin cycle.

Accepted Answer

A) True 
 B)False

Question 8

The key carbon dioxide fixation reaction in the Calvin Cycle is carried out by which enzyme?

Accepted Answer

A)  ribulose 1,5-bisphosphate carboxylase 
B)  ribulose 1,5-bisphosphate kinase 
C)  ribose 1,5-bisphosphate carboxylase 
D)  ribose 1,5-bisphosphate kinase 
E)  ribose 1,5-bisphosphate transcarboxylase 
A)  ribulose 1,5-bisphosphate carboxylase 
B)  ribulose 1,5-bisphosphate kinase 
C)  ribose 1,5-bisphosphate carboxylase 
D)  ribose 1,5-bisphosphate kinase 
E)  ribose 1,5-bisphosphate transcarboxylase

Question 9

Metabolic processes in the cell that yield energy are called ____________.

Accepted Answer

The answer of Metabolic processes in the cell that yield...

Question 10

Some anoxygenic photosynthetic bacteria are able to use _______ as an electron source.

Accepted Answer

A)  light 
B)  CO₂ 
C)  H₂S 
D)  H₂O 
E)  nitrate 
A)  light 
B)  CO₂ 
C)  H₂S 
D)  H₂O 
E)  nitrate

Question 11

The products of yeast fermentation,when including the Embden-Meyerhof pathway of glycolysis for one molecule of glucose,are two ethanol molecules as well as these others.

Accepted Answer

A)  two ATP and two NADH 
B)  two ATP, two NADH, and two CO₂ 
C)  four ATP and two NADH 
D)  two ATP and two CO₂ 
E)  four ATP, two NADH, and two CO₂ 
A)  two ATP and two NADH 
B)  two ATP, two NADH, and two CO₂ 
C)  four ATP and two NADH 
D)  two ATP and two CO₂ 
E)  four ATP, two NADH, and two CO₂

Question 12

A chemical that receives electrons during an oxidation/reduction reaction is being oxidized.

Accepted Answer

A) True 
 B)False

Question 13

Describe the components of the respiratory electron transport chain.Indicate if they are both an electron and proton acceptor,or an electron only acceptor.

Accepted Answer

The components of the respiratory electr

Question 14

Chlorophyll a maximally absorbs light energy at what frequency(ies)?

Accepted Answer

A)  430 nm and 662 nm 
B)  550 nm 
C)  750 nm and 850 nm 
D)  900 nm 
E)  800 nm and 950 nm 
A)  430 nm and 662 nm 
B)  550 nm 
C)  750 nm and 850 nm 
D)  900 nm 
E)  800 nm and 950 nm

Question 15

How is ATP is primarily produced in chemolithotrophs?

Accepted Answer

A)  Fermentation reactions. 
B)  Anaerobic respiration. 
C)  Electrons moving through an electron transport system to generate a proton motive force. 
D)  Glycolysis and TCA cycle reactions. 
E)  Using reduced inorganic molecules as electron acceptors for the electron transport system. 
A)  Fermentation reactions. 
B)  Anaerobic respiration. 
C)  Electrons moving through an electron transport system to generate a proton motive force. 
D)  Glycolysis and TCA cycle reactions. 
E)  Using reduced inorganic molecules as electron acceptors for the electron transport system.

Question 16

The process of oxidative phosphorylation involves an electron transport chain.

Accepted Answer

A) True 
 B)False

Question 17

Cyanobacteria use _______ as an electron source for the reduction of NADP+.

Accepted Answer

A)  sulfur 
B)  glucose 
C)  water 
D)  carbon dioxide 
E)  nitrate 
A)  sulfur 
B)  glucose 
C)  water 
D)  carbon dioxide 
E)  nitrate

Question 18

Which of these best describes assimilatory sulfate reduction?

Accepted Answer

A)  The reduction of sulfate to elemental sulfur. 
B)  The reduction of sulfate for incorporation into cellular material. 
C)  The reduction of sulfate to sulfide for excretion by the cell. 
D)  A type of anaerobic respiration. 
E)  An energy yielding process. 
A)  The reduction of sulfate to elemental sulfur. 
B)  The reduction of sulfate for incorporation into cellular material. 
C)  The reduction of sulfate to sulfide for excretion by the cell. 
D)  A type of anaerobic respiration. 
E)  An energy yielding process.

Question 19

Most cells prefer to assimilate nitrogen as ammonia.

Accepted Answer

A) True 
 B)False

Question 20

Microorganisms that rely solely on fermentation reactions for energy production make ATP primarily by this method.

Accepted Answer

A)  oxidative phosphorylation 
B)  electron transport phosphorylation 
C)  membrane bound ATPase 
D)  substrate-level phosphorylation 
E)  the oxidation of NADH 
A)  oxidative phosphorylation 
B)  electron transport phosphorylation 
C)  membrane bound ATPase 
D)  substrate-level phosphorylation 
E)  the oxidation of NADH

Exam 13: Metabolism

A net gain of four ATP are produced during glycolysis from the conversion of a single glucose to two pyruvate molecules during the Embden- Meyerhof pathway.

What is denitrification?

Which of these occurs in anaerobic respiration,but not in aerobic respiration?

Lactic acid is a common fermentation product.It is produced when ___________ is reduced by electrons received from NADH.

The purple sulfur bacteria produce reducing power during the light reactions of photosynthesis by what process?

The pentose phosphate pathway is important for producing the intermediate ribose-5-phosphate for the synthesis of __________________.

The most common carbon dioxide fixation pathway used by cyanobacteria is the Calvin cycle.

The key carbon dioxide fixation reaction in the Calvin Cycle is carried out by which enzyme?

Metabolic processes in the cell that yield energy are called ____________.

Some anoxygenic photosynthetic bacteria are able to use _______ as an electron source.

The products of yeast fermentation,when including the Embden-Meyerhof pathway of glycolysis for one molecule of glucose,are two ethanol molecules as well as these others.

A chemical that receives electrons during an oxidation/reduction reaction is being oxidized.

Describe the components of the respiratory electron transport chain.Indicate if they are both an electron and proton acceptor,or an electron only acceptor.

Chlorophyll a maximally absorbs light energy at what frequency(ies)?

How is ATP is primarily produced in chemolithotrophs?

The process of oxidative phosphorylation involves an electron transport chain.

Cyanobacteria use _______ as an electron source for the reduction of NADP+.

Which of these best describes assimilatory sulfate reduction?

Most cells prefer to assimilate nitrogen as ammonia.

Microorganisms that rely solely on fermentation reactions for energy production make ATP primarily by this method.

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