Question 1

Which of the following is true of farnesyl pyrophosphate and geranyl pyrophosphate?

Accepted Answer

A)  They both contain two cis double bonds. 
B)  They both contain two trans double bonds. 
C)  They both contain one cis double bond and one trans double bond. 
D)  None of the above is correct. 
A)  They both contain two cis double bonds. 
B)  They both contain two trans double bonds. 
C)  They both contain one cis double bond and one trans double bond. 
D)  None of the above is correct.

Question 2

Consider the following reaction sequence.  
-Consider the following diagram of a chloroplast.   Chloroplasts are similar to mitochondria in all but which of the following respects?

Accepted Answer

A)  Both are highly membranous. 
B)  Both contain iron-sulfur complexes. 
C)  Both contain translocating ATP-ase. 
D)  Both utilize a proton gradient. 
E)  They are similar in all of these respects. 
A)  Both are highly membranous. 
B)  Both contain iron-sulfur complexes. 
C)  Both contain translocating ATP-ase. 
D)  Both utilize a proton gradient. 
E)  They are similar in all of these respects.

Question 3

Glutamate plays an essential role in the synthesis of how many nonessential amino acids?

Accepted Answer

A)  3 
B)  5 
C)  10 
D)  20 
A)  3 
B)  5 
C)  10 
D)  20

Question 4

In addition to a carboxylate group, mevalonate contains two hydroxyl groups. Which of the following is true of these groups?

Accepted Answer

A)  They are both primary. 
B)  One is primary and one is secondary. 
C)  One is primary and one is tertiary. 
D)  They are both secondary. 
A)  They are both primary. 
B)  One is primary and one is secondary. 
C)  One is primary and one is tertiary. 
D)  They are both secondary.

Question 5

Which of the following are the starting materials for photosynthesis?

Accepted Answer

A)  CO2 and H2O 
B)  CO2 and O2 
C)  H2O and O2 
D)  none of these combinations 
A)  CO2 and H2O 
B)  CO2 and O2 
C)  H2O and O2 
D)  none of these combinations

Question 6

The body contains a large amount of inorganic phosphate, Pi. What is the effect of inorganic phosphate on the cleavage of glucose from glycogen?

Accepted Answer

A)  It favors the cleavage reaction and promotes glycogen degradation. 
B)  It represses the cleavage reaction and prevents glycogen degradation. 
C)  It speeds up the conversion of glucose to glycogen. 
D)  It speeds up the conversion of glycogen to glucose. 
A)  It favors the cleavage reaction and promotes glycogen degradation. 
B)  It represses the cleavage reaction and prevents glycogen degradation. 
C)  It speeds up the conversion of glucose to glycogen. 
D)  It speeds up the conversion of glycogen to glucose.

Question 7

During photosynthesis, how many molecules of oxygen are produced for each molecule of glucose which is synthesized?

Accepted Answer

A)  1 
B)  3 
C)  6 
D)  12 
A)  1 
B)  3 
C)  6 
D)  12

Question 8

Consider the following reaction sequence.  
-Which of the following describes the sources for the production of carbohydrates during photosynthesis?

Accepted Answer

A)  C - carbon dioxide, H - molecular hydrogen, energy - ATP 
B)  C - carbon dioxide, H - molecular hydrogen, energy - sunlight 
C)  C - glucose, H - water, energy - sunlight 
D)  C - carbon dioxide, H - water, energy - sunlight 
A)  C - carbon dioxide, H - molecular hydrogen, energy - ATP 
B)  C - carbon dioxide, H - molecular hydrogen, energy - sunlight 
C)  C - glucose, H - water, energy - sunlight 
D)  C - carbon dioxide, H - water, energy - sunlight

Question 9

Which of the following is true of fatty acid degradation and fatty acid synthesis?

Accepted Answer

A)  They both take place in the cytoplasm. 
B)  They both take place in the mitochondria. 
C)  Degradation takes place in the cytoplasm and synthesis takes place in the mitochondria. 
D)  Degradation takes place in the mitochondria and synthesis takes place in the cytoplasm. 
A)  They both take place in the cytoplasm. 
B)  They both take place in the mitochondria. 
C)  Degradation takes place in the cytoplasm and synthesis takes place in the mitochondria. 
D)  Degradation takes place in the mitochondria and synthesis takes place in the cytoplasm.

Question 10

Approximately what percentage of the radiant energy absorbed by plants is converted to carbohydrates?

Accepted Answer

A)  1% 
B)  10% 
C)  50% 
D)  90% 
A)  1% 
B)  10% 
C)  50% 
D)  90%

Question 11

Consider the following reaction sequence.  
-Which of the following is associated with obesity?

Accepted Answer

A)  genetics 
B)  metabolism 
C)  brain function 
D)  all of these 
A)  genetics 
B)  metabolism 
C)  brain function 
D)  all of these

Question 12

In which of the following diseases does the body break down its own proteins?

Accepted Answer

A)  kwashiorkor 
B)  multiple sclerosis 
C)  rickets 
D)  none of these 
A)  kwashiorkor 
B)  multiple sclerosis 
C)  rickets 
D)  none of these

Question 13

The light reactions of photosynthesis produce which of the following?

Accepted Answer

A)  glucose 
B)  molecular oxygen 
C)  both a and b 
D)  neither a nor b 
A)  glucose 
B)  molecular oxygen 
C)  both a and b 
D)  neither a nor b

Question 14

Prenylation is which of the following?

Accepted Answer

A)  a step in the synthesis of cholesterol 
B)  the binding of farnesyl pyrophosphate or geranyl pyrophosphate to a protein 
C)  both a and b 
D)  neither a nor b 
A)  a step in the synthesis of cholesterol 
B)  the binding of farnesyl pyrophosphate or geranyl pyrophosphate to a protein 
C)  both a and b 
D)  neither a nor b

Question 15

Which of the following won a Nobel Prize for studies of photosynthesis?

Accepted Answer

A)  M. Calvin 
B)  C. Cori 
C)  H. Krebs 
D)  L. Pauling 
A)  M. Calvin 
B)  C. Cori 
C)  H. Krebs 
D)  L. Pauling

Question 16

In which organ does gluconeogenesis using the Cori cycle take place?

Accepted Answer

A)  the intestine 
B)  the liver 
C)  the muscles 
D)  the spleen 
A)  the intestine 
B)  the liver 
C)  the muscles 
D)  the spleen

Question 17

Consider the following reaction sequence.  
-Which of the following characterizes the product of this reaction sequence?

Accepted Answer

A)  It is called glycogen. 
B)  It is an example of a polysaccharide. 
C)  It can be broken down by the same enzyme used in its synthesis. 
D)  All of these are correct. 
A)  It is called glycogen. 
B)  It is an example of a polysaccharide. 
C)  It can be broken down by the same enzyme used in its synthesis. 
D)  All of these are correct.

Question 18

The dark reactions of photosynthesis produce which of the following?

Accepted Answer

A)  glucose 
B)  molecular oxygen 
C)  both a and b 
D)  neither a nor b 
A)  glucose 
B)  molecular oxygen 
C)  both a and b 
D)  neither a nor b

Question 19

Examine the following structure.  
-Which of the following refers to the biosynthesis of compounds?

Accepted Answer

A)  anabolism 
B)  catabolism 
C)  metabolism 
D)  none of these 
A)  anabolism 
B)  catabolism 
C)  metabolism 
D)  none of these

Question 20

Which of the following enzymes controls the rate of cholesterol synthesis?

Accepted Answer

A)  cholesterase 
B)  HMG oxidase 
C)  HMG CoA reductase 
D)  mevalonate decarboxylase 
A)  cholesterase 
B)  HMG oxidase 
C)  HMG CoA reductase 
D)  mevalonate decarboxylase

Exam 29: Biosynthetic Pathways

Which of the following is true of farnesyl pyrophosphate and geranyl pyrophosphate?

Consider the following reaction sequence. -Consider the following diagram of a chloroplast. Chloroplasts are similar to mitochondria in all but which of the following respects?

Glutamate plays an essential role in the synthesis of how many nonessential amino acids?

In addition to a carboxylate group, mevalonate contains two hydroxyl groups. Which of the following is true of these groups?

Which of the following are the starting materials for photosynthesis?

The body contains a large amount of inorganic phosphate, Pi. What is the effect of inorganic phosphate on the cleavage of glucose from glycogen?

During photosynthesis, how many molecules of oxygen are produced for each molecule of glucose which is synthesized?

Consider the following reaction sequence. -Which of the following describes the sources for the production of carbohydrates during photosynthesis?

Which of the following is true of fatty acid degradation and fatty acid synthesis?

Approximately what percentage of the radiant energy absorbed by plants is converted to carbohydrates?

Consider the following reaction sequence. -Which of the following is associated with obesity?

In which of the following diseases does the body break down its own proteins?

The light reactions of photosynthesis produce which of the following?

Prenylation is which of the following?

Which of the following won a Nobel Prize for studies of photosynthesis?

In which organ does gluconeogenesis using the Cori cycle take place?

Consider the following reaction sequence. -Which of the following characterizes the product of this reaction sequence?

The dark reactions of photosynthesis produce which of the following?

Examine the following structure. -Which of the following refers to the biosynthesis of compounds?

Which of the following enzymes controls the rate of cholesterol synthesis?

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The body contains a large amount of inorganic phosphate, P_i. What is the effect of inorganic phosphate on the cleavage of glucose from glycogen?