Question 1

Answer the questions by matching each word or groups of words with its appropriate question number.
-often a vitamin or mineral that improves enzyme functioning

Accepted Answer

A) active site 
B) adenosine triphosphate 
C) electron transfer chain 
D) denaturation 
E) feedback inhibition
F)phosphorylation
G)enzyme
H)cofactor 
A) active site 
B) adenosine triphosphate 
C) electron transfer chain 
D) denaturation 
E) feedback inhibition
F)phosphorylation
G)enzyme
H)cofactor

Question 2

Calcium ion concentrations are tightly regulated because of the importance of calcium in biological functions.Calcium ion concentrations are ____ inside the cell than out.

Accepted Answer

A) slightly higher 
B) slightly lower 
C) the same 
D) much higher 
E) much lower 
A) slightly higher 
B) slightly lower 
C) the same 
D) much higher 
E) much lower

Question 3

Which of the following is an example of an energy-requiring reaction?

Accepted Answer

A) The combustion of the gas in your car to move it forward. 
B) The burning of a log to generate heat. 
C) The synthesis of carbon dioxide into glucose. 
D) The oxidation of metal to form rust. 
E) The metabolism of glucose to form ATP. 
A) The combustion of the gas in your car to move it forward. 
B) The burning of a log to generate heat. 
C) The synthesis of carbon dioxide into glucose. 
D) The oxidation of metal to form rust. 
E) The metabolism of glucose to form ATP.

Question 4

Transporting a solute against its concentration gradient requires ____.

Accepted Answer

A) energy 
B) a gated channel 
C) exocytosis 
D) hypotonic and hypertonic differences across the cell membrane 
E) vesicle formation 
A) energy 
B) a gated channel 
C) exocytosis 
D) hypotonic and hypertonic differences across the cell membrane 
E) vesicle formation

Question 5

Answer the questions by matching each word or groups of words with the appropriate definition.
-minimum amount of energy required to start a reaction

Accepted Answer

A) reactant 
B) product 
C) ATP 
D) activation energy 
E) reaction
F)Phosphorylation 
A) reactant 
B) product 
C) ATP 
D) activation energy 
E) reaction
F)Phosphorylation

Question 6

Most enzymes are composed of ____.

Accepted Answer

A) RNA only 
B) protein only 
C) substrate only 
D) RNA and protein 
E) protein and substrate 
A) RNA only 
B) protein only 
C) substrate only 
D) RNA and protein 
E) protein and substrate

Question 7

Consider the ADH reaction below,and answer the following question.ADH stands for alcohol dehydrogenase.   In this reaction,ADH represents the ____.

Accepted Answer

A) enzyme 
B) reactant 
C) product 
D) activation energy 
E) trigger 
A) enzyme 
B) reactant 
C) product 
D) activation energy 
E) trigger

Question 8

Once glucose has entered a cell,what prevents it from diffusing back out of the cell?

Accepted Answer

A) Glucose pumps actively transported any leaked glucose back into the cell. 
B) One side of the cell membrane is permeable to glucose, but the other side is not. 
C) Glucose inhibitors attach to glucose once it's in the cell. 
D) Glucose is phosphorylated, preventing it from leaving the cell. 
E) Glucose is hydrolyzed into two three-carbon molecules that cannot diffuse in a reverse direction. 
A) Glucose pumps actively transported any leaked glucose back into the cell. 
B) One side of the cell membrane is permeable to glucose, but the other side is not. 
C) Glucose inhibitors attach to glucose once it's in the cell. 
D) Glucose is phosphorylated, preventing it from leaving the cell. 
E) Glucose is hydrolyzed into two three-carbon molecules that cannot diffuse in a reverse direction.

Question 9

Unlike plants,fungi,and bacteria,animal cells cannot resist volume increases in hypotonic environments.This is because unlike those other organisms,animal cells ____.

Accepted Answer

A) do not have central vacuoles 
B) do not have cell walls 
C) do not have pumps that can actively pump out excess fluid 
D) are smaller than those other cells and thus cannot handle large increases in volume 
E) have relatively more solutes 
A) do not have central vacuoles 
B) do not have cell walls 
C) do not have pumps that can actively pump out excess fluid 
D) are smaller than those other cells and thus cannot handle large increases in volume 
E) have relatively more solutes

Question 10

A cirrhotic liver can no longer produce ____,which leads to swelling in the legs and abdomen.haptoglobin

Accepted Answer

A) alphafetoprotein 
B) alcohol dehydrogenase 
C) haptoglobin 
D) fibronectin 
E) albumin 
A) alphafetoprotein 
B) alcohol dehydrogenase 
C) haptoglobin 
D) fibronectin 
E) albumin

Question 11

Answer the questions by matching each word or groups of words with the appropriate definition.
-molecule that enters a reaction

Accepted Answer

A) reactant 
B) product 
C) ATP 
D) activation energy 
E) reaction
F)Phosphorylation 
A) reactant 
B) product 
C) ATP 
D) activation energy 
E) reaction
F)Phosphorylation

Question 12

Answer the questions by matching each word or groups of words with its appropriate question number.
-loss of protein structure by excessive pH,temperature and other factors

Accepted Answer

A) active site 
B) adenosine triphosphate 
C) electron transfer chain 
D) denaturation 
E) feedback inhibition
F)phosphorylation
G)enzyme
H)cofactor 
A) active site 
B) adenosine triphosphate 
C) electron transfer chain 
D) denaturation 
E) feedback inhibition
F)phosphorylation
G)enzyme
H)cofactor

Question 13

Why does wood keep burning once it is lit?

Accepted Answer

A) Intermediates from the reaction drive the reaction forward. 
B) Energy is given off during the reaction that drives the reaction forward. 
C) The products have more energy than the reactants, therefore driving the reaction forward. 
D) The reactants have more energy than the products, therefore driving the reaction forward. 
E) The activation of the energy drives the reaction forward. 
A) Intermediates from the reaction drive the reaction forward. 
B) Energy is given off during the reaction that drives the reaction forward. 
C) The products have more energy than the reactants, therefore driving the reaction forward. 
D) The reactants have more energy than the products, therefore driving the reaction forward. 
E) The activation of the energy drives the reaction forward.

Question 14

A concentration gradient ceases to exist when ____.

Accepted Answer

A) all molecules have moved from low concentration to high concentration 
B) the membrane pores close 
C) the temperature drops 
D) there is equilibrium between the two sides of a membrane 
E) bulk flow intervenes 
A) all molecules have moved from low concentration to high concentration 
B) the membrane pores close 
C) the temperature drops 
D) there is equilibrium between the two sides of a membrane 
E) bulk flow intervenes

Question 15

Which of the following occurs in feedback inhibition?

Accepted Answer

A) Coenzymes block enzyme activity. 
B) Products of metabolic reactions block enzyme activity. 
C) NADH is altered in electron transport chains. 
D) ADP is phosphorylated. 
E) Low reactant concentrations decrease enzyme activity. 
A) Coenzymes block enzyme activity. 
B) Products of metabolic reactions block enzyme activity. 
C) NADH is altered in electron transport chains. 
D) ADP is phosphorylated. 
E) Low reactant concentrations decrease enzyme activity.

Question 16

Heating up a reaction increases the speed of a reaction until the ____.

Accepted Answer

A) enzyme denatures 
B) heat changes the pH of the reaction 
C) maximum speed is achieved 
D) cofactors can't bind the enzyme 
E) reaction begins to experience feedback inhibition 
A) enzyme denatures 
B) heat changes the pH of the reaction 
C) maximum speed is achieved 
D) cofactors can't bind the enzyme 
E) reaction begins to experience feedback inhibition

Question 17

The second law of thermodynamics states that ____.

Accepted Answer

A) the energy of the universe is a constant 
B) energy can be neither created nor destroyed 
C) energy disperses spontaneously 
D) energy transformations create a more orderly universe 
E) energy and matter are the same thing 
A) the energy of the universe is a constant 
B) energy can be neither created nor destroyed 
C) energy disperses spontaneously 
D) energy transformations create a more orderly universe 
E) energy and matter are the same thing

Question 18

A substrate is another term for a(n)____.

Accepted Answer

A) enzyme 
B) product 
C) reactant 
D) active site 
E) cofactors 
A) enzyme 
B) product 
C) reactant 
D) active site 
E) cofactors

Question 19

When a phosphate group is transferred from ATP,active transport pumps ____.

Accepted Answer

A) trigger exocytosis 
B) change their shapes 
C) become ionized 
D) fuse with the surrounding phospholipid membrane 
E) are destroyed 
A) trigger exocytosis 
B) change their shapes 
C) become ionized 
D) fuse with the surrounding phospholipid membrane 
E) are destroyed

Question 20

The minimum amount of energy needed to get a chemical reaction started is called the ____ energy.

Accepted Answer

A) activation 
B) reaction 
C) enzymatic 
D) chemical 
E) triggering 
A) activation 
B) reaction 
C) enzymatic 
D) chemical 
E) triggering

Answer the questions by matching each word or groups of words with its appropriate question number. -often a vitamin or mineral that improves enzyme functioning

Calcium ion concentrations are tightly regulated because of the importance of calcium in biological functions.Calcium ion concentrations are ____ inside the cell than out.

Which of the following is an example of an energy-requiring reaction?

Transporting a solute against its concentration gradient requires ____.

Answer the questions by matching each word or groups of words with the appropriate definition. -minimum amount of energy required to start a reaction

Most enzymes are composed of ____.

Consider the ADH reaction below,and answer the following question.ADH stands for alcohol dehydrogenase. In this reaction,ADH represents the ____.

Once glucose has entered a cell,what prevents it from diffusing back out of the cell?

Unlike plants,fungi,and bacteria,animal cells cannot resist volume increases in hypotonic environments.This is because unlike those other organisms,animal cells ____.

A cirrhotic liver can no longer produce ____,which leads to swelling in the legs and abdomen.haptoglobin

Answer the questions by matching each word or groups of words with the appropriate definition. -molecule that enters a reaction

Answer the questions by matching each word or groups of words with its appropriate question number. -loss of protein structure by excessive pH,temperature and other factors

Why does wood keep burning once it is lit?

A concentration gradient ceases to exist when ____.

Which of the following occurs in feedback inhibition?

Heating up a reaction increases the speed of a reaction until the ____.

The second law of thermodynamics states that ____.

A substrate is another term for a(n)____.

When a phosphate group is transferred from ATP,active transport pumps ____.

The minimum amount of energy needed to get a chemical reaction started is called the ____ energy.

Invitation To Biology

Molecules Of Life

Cell Structure

Capturing And Releasing Energy

DNA Structure And Function

Gene Expression AND Control

How Cells Reproduce

Patterns Of Inheritance

Biotechnology

Evidence Of Evolution

Processes Of Evolution

Early Life Forms And The Viruses

Plants And Fungi

Animal Evolution

Population Ecology

Communities And Ecosystems

The Biosphere And Human Effects

Filters

Exam 4: Energy And Metabolism

Answer the questions by matching each word or groups of words with its appropriate question number. -often a vitamin or mineral that improves enzyme functioning

Calcium ion concentrations are tightly regulated because of the importance of calcium in biological functions.Calcium ion concentrations are ____ inside the cell than out.

Which of the following is an example of an energy-requiring reaction?

Transporting a solute against its concentration gradient requires ____.

Answer the questions by matching each word or groups of words with the appropriate definition. -minimum amount of energy required to start a reaction

Most enzymes are composed of ____.

Consider the ADH reaction below,and answer the following question.ADH stands for alcohol dehydrogenase. In this reaction,ADH represents the ____.

Once glucose has entered a cell,what prevents it from diffusing back out of the cell?

Unlike plants,fungi,and bacteria,animal cells cannot resist volume increases in hypotonic environments.This is because unlike those other organisms,animal cells ____.

A cirrhotic liver can no longer produce ____,which leads to swelling in the legs and abdomen.haptoglobin

Answer the questions by matching each word or groups of words with the appropriate definition. -molecule that enters a reaction

Answer the questions by matching each word or groups of words with its appropriate question number. -loss of protein structure by excessive pH,temperature and other factors

Why does wood keep burning once it is lit?

A concentration gradient ceases to exist when ____.

Which of the following occurs in feedback inhibition?

Heating up a reaction increases the speed of a reaction until the ____.

The second law of thermodynamics states that ____.

A substrate is another term for a(n)____.

When a phosphate group is transferred from ATP,active transport pumps ____.

The minimum amount of energy needed to get a chemical reaction started is called the ____ energy.

Invitation To Biology

Molecules Of Life

Cell Structure

Capturing And Releasing Energy

DNA Structure And Function

Gene Expression AND Control

How Cells Reproduce

Patterns Of Inheritance

Biotechnology

Evidence Of Evolution

Processes Of Evolution

Early Life Forms And The Viruses

Plants And Fungi

Animal Evolution

Population Ecology

Communities And Ecosystems

The Biosphere And Human Effects

Filters