Question 1

Which of the following is an example of the second law of thermodynamics?

Accepted Answer

A)  Conversion of the energy in sunlight into glucose
B)  The use of gasoline to propel your car 
C)  ATP activation of a proton pump.
D)  A light bulb heats up after use
E)  A nuclear reactor lights up the city.

Question 2

Answer the questions by matching each word or groups of words with the appropriate definition.
-the main energy carrier between reaction sites in cells

Accepted Answer

A)  reactant
B)  product
C)  ATP
D)  activation energy
E)  reactionF) phosphorylation

Question 3

A series of enzyme-mediated reactions by which cells build,remodel,or break down organic molecules is known as ____.

Accepted Answer

A)  energy carriers
B)  metabolic pathways
C)  the induced-fit model
D)  intermediary compounds
E)  activation

Question 4

Pepsin is an enzyme that functions in the stomach.Its optimum pH would be ____.

Accepted Answer

A)  between 1 and 2
B)  between 3 and 4
C)  above 6
D)  between 5 and 7.5
E)  above 8.5

Question 5

Why do heavy consumers of alcohol gain weight?

Accepted Answer

A)  Alcohol contains an excessive amount of calories.
B)  Ethanol is converted directly to fat molecules.
C)  Oxygen is diverted from breaking down fatty acids to break down ethanol.
D)  Ethanol inhibits the action of peroxisomes which work to break down fatty acids.
E)  The hydroxyl group on ethanol is transferred to fatty acids causing them to be stored as fat.

Question 6

Energy is defined as ____.

Accepted Answer

A)  the capacity to do work
B)  the movement of atoms and molecules
C)  movement of electrons
D)  measurement of food intake
E)  capacity to store sugar

Question 7

Answer the questions by matching each word or groups of words with its appropriate question number.
-part of the enzyme that is specific for the reaction it will catalyze

Accepted Answer

A)  active site
B)  adenosine triphosphate
C)  electron transfer chain
D)  denaturation
E)  feedback inhibitionF) phosphorylationG) enzymeH) cofactor

Question 8

Long term,heavy drinking can lead to ____,a disease characterized by inflammation and destruction of the liver.

Accepted Answer

A)  hepatoblastoma
B)  gall stones
C)  fatty liver disease
D)  jaundice
E)  hepatitis

Question 9

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

Accepted Answer

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

Question 10

Answer the questions by matching each word or groups of words with the appropriate definition.
-phosphate-group transfer

Accepted Answer

A)  reactant
B)  product
C)  ATP
D)  activation energy
E)  reactionF) phosphorylation

Question 11

Which solution has the potential to diffuse the fastest?

Accepted Answer

A)  A solution with large molecules as opposed to smaller ones.
B)  A solution with a higher concentration of molecules as opposed to one with a lower concentration.
C)  A solution that is under low pressure as opposed to one under high pressure.
D)  A solution that is at a low temperature as opposed to one at a higher temperature.
E)  A solution containing a hydrophilic solute as opposed to a salt.

Question 12

When ethanol (C2H5OH) and oxygen (O2) react together,they form carbon dioxide (CO2) and water (H2O) .The resulting chemical reaction is: C2H5OH + 3O2 --> 2CO2 + 3H2O The coefficient in front of H2O indicates there are ____.

Accepted Answer

A)  three oxygen atoms in the reaction
B)  three carbon atoms in the water
C)  three water molecules in the reaction
D)  six water molecules in the reaction 
E)  six oxygen atoms in the reaction

Question 13

The initial event that triggers phagocytosis is when the ____.

Accepted Answer

A)  solute concentration is higher inside the cell than outside
B)  solute concentrations is lower inside the cell than outside 
C)  target protein binds to the receptor 
D)  enzymes bind to the membrane
E)  vesicles bud off from the membrane

Question 14

In the pictures below of red blood cells emerged in three different solutions, identify which picture corresponds to each of the following solutions. 
-Hypertonic

Accepted Answer

A)  A
B)  B
C)  C

Question 15

What happens to a molecule when it is phosphorylated?

Accepted Answer

A)  It loses energy.
B)  It receives a phosphate group.
C)  It becomes denatured.
D)  It loses electrons and protons.
E)  It gains electrons.

Question 16

A cow converts the energy of glucose into the energy of ATP.What happens to most of the energy in that conversion?

Accepted Answer

A)  It remains with the glucose - it can't be extracted.
B)  It is lost as heat energy.
C)  It is within the ATP molecule.
D)  It is recycled back into glucose.
E)  It is utilized in other metabolic pathways.

Question 17

If a single-celled freshwater organism such as a protistan is transferred to saltwater,which of the following is likely to happen?

Accepted Answer

A)  The cell will burst.
B)  The cell will shrink.
C)  Salt will be pumped out of the cell.
D)  Salt will be pumped into the cell.
E)  Enzymes will flow out of the cell.

Question 18

Regulatory factors that bind to enzymes ____.

Accepted Answer

A)  always increase enzyme activity
B)  always decrease enzyme activity
C)  alter the shape of the enzyme
D)  alter the pH at which the enzyme works
E)  alter the temperature at which the enzyme works

Question 19

Which metabolite of alcohol is most toxic?

Accepted Answer

A)  alcohol dehydrogenase
B)  ethanol
C)  acetaldehyde
D)  acetate
E)  carbon dioxide

Question 20

The energy in chemical bonds is what type of energy?

Accepted Answer

A)  kinetic
B)  potential
C)  atomic
D)  nuclear
E)  thermal

Exam 4: Energy And Metabolism

Long term,heavy drinking can lead to ____,a disease characterized by inflammation and destruction of the liver.

Correct AnswerverifiedShow Answer

Which solution has the potential to diffuse the fastest?

Correct AnswerverifiedShow Answer

Answer the questions by matching each word or groups of words with the appropriate definition. -the main energy carrier between reaction sites in cells

Correct AnswerverifiedShow Answer

Energy is defined as ____.

Correct AnswerverifiedShow Answer

Why do heavy consumers of alcohol gain weight?

Correct AnswerverifiedShow Answer

Regulatory factors that bind to enzymes ____.

Correct AnswerverifiedShow Answer

When ethanol (C2H5OH) and oxygen (O2) react together,they form carbon dioxide (CO2) and water (H2O) .The resulting chemical reaction is: C2H5OH + 3O2 --> 2CO2 + 3H2O The coefficient in front of H2O indicates there are ____.

Correct AnswerverifiedShow Answer

A series of enzyme-mediated reactions by which cells build,remodel,or break down organic molecules is known as ____.

Correct AnswerverifiedShow Answer

Which of the following is an example of the second law of thermodynamics?

Correct AnswerverifiedShow Answer

In the pictures below of red blood cells emerged in three different solutions, identify which picture corresponds to each of the following solutions. -Hypertonic

Correct AnswerverifiedShow Answer

A cow converts the energy of glucose into the energy of ATP.What happens to most of the energy in that conversion?

Correct AnswerverifiedShow Answer

If a single-celled freshwater organism such as a protistan is transferred to saltwater,which of the following is likely to happen?

Correct AnswerverifiedShow Answer

Answer the questions by matching each word or groups of words with its appropriate question number. -part of the enzyme that is specific for the reaction it will catalyze

Correct AnswerverifiedShow Answer

Answer the questions by matching each word or groups of words with the appropriate definition. -phosphate-group transfer

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The energy in chemical bonds is what type of energy?

Correct AnswerverifiedShow Answer

Pepsin is an enzyme that functions in the stomach.Its optimum pH would be ____.

Correct AnswerverifiedShow Answer

The initial event that triggers phagocytosis is when the ____.

Correct AnswerverifiedShow Answer

Which metabolite of alcohol is most toxic?

Correct AnswerverifiedShow Answer

What happens to a molecule when it is phosphorylated?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

When ethanol (C₂H₅OH) and oxygen (O₂) react together,they form carbon dioxide (CO₂) and water (H₂O) .The resulting chemical reaction is: C₂H₅OH + 3O₂ --> 2CO₂ + 3H₂O The coefficient in front of H₂O indicates there are ____.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified