Question 1

Enzymes

Accepted Answer

A)  control the speed of a reaction. 
B)  change shapes to facilitate certain reactions. 
C)  may place physical stress on the bonds of the substrate. 
D)  always work on their own. 
E)  do all of these.

Question 2

Classification.The items below are processes that occur during different stages of photosynthesis.Answer the following questions by selecting one of these three processes.
a.oxidation
b.reduction
c.phosphorylation
-This process occurs when an electron transport molecule gives up an electron.

Accepted Answer

The answer of Classification.The items below are processes that occur...

Question 3

MATCHING
Matching.Choose the one most appropriate answer for each.
a.rate of forward reaction about equals rate of reverse reaction
b.coenzyme that diffuses freely through the cytoplasm
c.attachment of a phosphate group by a high-energy bond
d.an excess of end-product molecules alters the shape of the first enzyme in the pathway and shuts off that metabolic pathway
e.part of an enzyme that binds to the substrate
f.by binding a regulatory molecule, it changes the activity of a metabolic pathway
g.affects rates of chemical reactions
h.universal energy currency
i.assists in the detoxification of ethanol
j.
a measure of the degree of energy change after a concentrated form of energy has been dispersed
-allosteric enzyme

Accepted Answer

The answer of MATCHING
Matching.Choose the one most appropriate answer for...

Question 4

MATCHING
Matching.Choose the one most appropriate answer for each.
a.rate of forward reaction about equals rate of reverse reaction
b.coenzyme that diffuses freely through the cytoplasm
c.attachment of a phosphate group by a high-energy bond
d.an excess of end-product molecules alters the shape of the first enzyme in the pathway and shuts off that metabolic pathway
e.part of an enzyme that binds to the substrate
f.by binding a regulatory molecule, it changes the activity of a metabolic pathway
g.affects rates of chemical reactions
h.universal energy currency
i.assists in the detoxification of ethanol
j.
a measure of the degree of energy change after a concentrated form of energy has been dispersed
-catalyst

Accepted Answer

The answer of MATCHING
Matching.Choose the one most appropriate answer for...

Question 5

The following questions refer to the figure above.
-The figure above represents

Accepted Answer

A)  an exergonic reaction. 
B)  a metabolic pathway. 
C)  allosteric inhibition. 
D)  allosteric activation. 
E)  all of these.

Question 6

In the image above an enzyme substrate complex is represented by

Accepted Answer

A)  C. 
B)  D. 
C)  E. 
D)  D and E. 
E)  None of these.

Question 7

Classification.The items below are processes that occur during different stages of photosynthesis.Answer the following questions by selecting one of these three processes. a.oxidation b.reduction c.phosphorylation -This process occurs when an electron is passed to an electron acceptor molecule, such as NADP⁺.

Accepted Answer

The answer of Classification.The items below are processes that occur...

Question 8

Energy is commonly defined as "the capacity to do work." This definition is

Accepted Answer

A)  incorrect. 
B)  adequate in the physical sciences. 
C)  adequate in the biological sciences. 
D)  a clue to the actual properties of the concept. 
E)  not accepted by most scientists.

Question 9

MATCHING
Matching.Choose the one most appropriate answer for each.
a.rate of forward reaction about equals rate of reverse reaction
b.coenzyme that diffuses freely through the cytoplasm
c.attachment of a phosphate group by a high-energy bond
d.an excess of end-product molecules alters the shape of the first enzyme in the pathway and shuts off that metabolic pathway
e.part of an enzyme that binds to the substrate
f.by binding a regulatory molecule, it changes the activity of a metabolic pathway
g.affects rates of chemical reactions
h.universal energy currency
i.assists in the detoxification of ethanol
j.
a measure of the degree of energy change after a concentrated form of energy has been dispersed
-adenosine triphosphate

Accepted Answer

The answer of MATCHING
Matching.Choose the one most appropriate answer for...

Question 10

Endergonic reactions

Accepted Answer

A)  result in products with less energy than the reactants. 
B)  require a net input of energy. 
C)  occur in the breakdown of glucose. 
D)  are used by cells to provide energy for biological reactions. 
E)  break down large molecules into smaller molecules.

Question 11

Which of the following statements is true of metabolic pathways?

Accepted Answer

A)  They are enzyme-mediated sequences of reactions. 
B)  They may be biosynthetic or degradative. 
C)  Photosynthesis is a biosynthetic pathway. 
D)  Catabolism is a degradative pathway. 
E)  All of these statements are true.

Question 12

The action of a white blood cell engulfing a bacterium is

Accepted Answer

A)  pinocytosis. 
B)  phagocytosis. 
C)  exocytosis. 
D)  endocytosis. 
E)  phagocytosis and endocytosis.

Question 13

MATCHING
Matching.Choose the one most appropriate answer for each.
a.rate of forward reaction about equals rate of reverse reaction
b.coenzyme that diffuses freely through the cytoplasm
c.attachment of a phosphate group by a high-energy bond
d.an excess of end-product molecules alters the shape of the first enzyme in the pathway and shuts off that metabolic pathway
e.part of an enzyme that binds to the substrate
f.by binding a regulatory molecule, it changes the activity of a metabolic pathway
g.affects rates of chemical reactions
h.universal energy currency
i.assists in the detoxification of ethanol
j.
a measure of the degree of energy change after a concentrated form of energy has been dispersed
-feedback inhibition

Accepted Answer

The answer of MATCHING
Matching.Choose the one most appropriate answer for...

Question 14

Classification.The items below are processes that occur during different stages of photosynthesis.Answer the following questions by selecting one of these three processes.
a.oxidation
b.reduction
c.phosphorylation
-Compare and contrast facilitated and active transport?

Accepted Answer

The answer of Classification.The items below are processes that occur...

Question 15

In the image above, the substance indicated as "B" is a(n)

Accepted Answer

A)  inhibitor. 
B)  activator. 
C)  substrate. 
D)  coenzyme. 
E)  cofactor.

Question 16

All of the following are true of the process of phosphorylation EXCEPT that

Accepted Answer

A)  a molecule gains a phosphate group. 
B)  a molecule loses a phosphate group. 
C)  molecules become less stable. 
D)  it is used to prime molecules to react. 
E)  it produces ADP from ATP.

Question 17

Classification.The items below are processes that occur during different stages of photosynthesis.Answer the following questions by selecting one of these three processes.
a.oxidation
b.reduction
c.phosphorylation
-Describe how the laws of thermodynamics would impact the Earth were the sun's light suddenly blocked?

Accepted Answer

The answer of Classification.The items below are processes that occur...

Question 18

The method of movement that requires the expenditure of ATP molecules is

Accepted Answer

A)  simple diffusion. 
B)  facilitated diffusion. 
C)  osmosis. 
D)  active transport. 
E)  bulk flow.

Exam 5: Ground Rules of Metabolism

Enzymes

Classification.The items below are processes that occur during different stages of photosynthesis.Answer the following questions by selecting one of these three processes. a.oxidation b.reduction c.phosphorylation -This process occurs when an electron transport molecule gives up an electron.

The following questions refer to the figure above. -The figure above represents

In the image above an enzyme substrate complex is represented by

Energy is commonly defined as "the capacity to do work." This definition is

Endergonic reactions

Which of the following statements is true of metabolic pathways?

The action of a white blood cell engulfing a bacterium is

Classification.The items below are processes that occur during different stages of photosynthesis.Answer the following questions by selecting one of these three processes. a.oxidation b.reduction c.phosphorylation -Compare and contrast facilitated and active transport?

In the image above, the substance indicated as "B" is a(n)

All of the following are true of the process of phosphorylation EXCEPT that

The method of movement that requires the expenditure of ATP molecules is