Question 1

DNA replication occurs

Accepted Answer

A)  when a cell requires energy. 
B)  outside of the nucleus. 
C)  during interphase of the cell cycle. 
D)  during mitosis. 
A)  when a cell requires energy. 
B)  outside of the nucleus. 
C)  during interphase of the cell cycle. 
D)  during mitosis.

Question 2

During DNA replication,

Accepted Answer

A)  tRNAs bring specific amino acids to an mRNA molecule. 
B)  two single strands of DNA come together, restoring complementary base pairing. 
C)  amino acids are joined. 
D)  the DNA double helix comes apart where hydrogen bonds join base pairs, and new nucleotides are brought in, forming two double helices. 
A)  tRNAs bring specific amino acids to an mRNA molecule. 
B)  two single strands of DNA come together, restoring complementary base pairing. 
C)  amino acids are joined. 
D)  the DNA double helix comes apart where hydrogen bonds join base pairs, and new nucleotides are brought in, forming two double helices.

Question 3

Which of the following best describes the interaction between an enzyme and its substrate?

Accepted Answer

A)  The enzyme surrounds and completely contains the substrate. 
B)  The substrate surrounds and completely contains the enzyme. 
C)  The enzyme temporarily deactivates the substrate. 
D)  Part of the enzyme temporarily binds part of the substrate molecule. 
A)  The enzyme surrounds and completely contains the substrate. 
B)  The substrate surrounds and completely contains the enzyme. 
C)  The enzyme temporarily deactivates the substrate. 
D)  Part of the enzyme temporarily binds part of the substrate molecule.

Question 4

The genetic code is the correspondence between DNA sequence and amino acid sequence of a protein.

Accepted Answer

A) True 
 B)False

Question 5

The complete set of genetic instructions in an individual is the ______.

Accepted Answer

The answer of The complete set of genetic instructions in...

Question 6

The two strands of a DNA molecule have opposite orientation.

Accepted Answer

A) True 
 B)False

Question 7

Mutagens are factors that cause mutation.

Accepted Answer

A) True 
 B)False

Question 8

Genetic information is contained in protein molecules and is passed from one parent to another.

Accepted Answer

A) True 
 B)False

Question 9

In cellular respiration,

Accepted Answer

A)  mitochondria release glucose molecules. 
B)  energy is released from molecules and is transferred to other molecules. 
C)  cells breathe, or take in, O2 and give off CO2. 
D)  energy is absorbed from glucose and is transferred to CO2. 
A)  mitochondria release glucose molecules. 
B)  energy is released from molecules and is transferred to other molecules. 
C)  cells breathe, or take in, O2 and give off CO2. 
D)  energy is absorbed from glucose and is transferred to CO2.

Question 10

In dehydration synthesis of a carbohydrate,

Accepted Answer

A)  larger molecules are decomposed into smaller ones. 
B)  monosaccharides are joined. 
C)  water molecules bond to monosaccharide molecules. 
D)  the molecule is decomposed into carbon dioxide and water. 
A)  larger molecules are decomposed into smaller ones. 
B)  monosaccharides are joined. 
C)  water molecules bond to monosaccharide molecules. 
D)  the molecule is decomposed into carbon dioxide and water.

Question 11

A part of a gene that is a DNA sequence 333 nucleotides long encodes ___ amino acids.

Accepted Answer

A)  333 
B)  111 
C)  999 
D)  444 
A)  333 
B)  111 
C)  999 
D)  444

Question 12

What is the function of ATP molecules in living cells?

Accepted Answer

A)  They form a genetic material. 
B)  They capture energy from the oxidation of fuels in their high-energy phosphate bonds, and the energy is used in various cell processes. 
C)  They act as coenzymes so that fats can be synthesized. 
D)  They are an integral part of the cell membrane, important in transporting water molecules. 
A)  They form a genetic material. 
B)  They capture energy from the oxidation of fuels in their high-energy phosphate bonds, and the energy is used in various cell processes. 
C)  They act as coenzymes so that fats can be synthesized. 
D)  They are an integral part of the cell membrane, important in transporting water molecules.

Question 13

Arsenic poisoning harms the body by

Accepted Answer

A)  unraveling the DNA double helix. 
B)  interfering with cellular extraction of energy from glucose. 
C)  forming more sulfur bonds in proteins. 
D)  rotting the teeth. 
A)  unraveling the DNA double helix. 
B)  interfering with cellular extraction of energy from glucose. 
C)  forming more sulfur bonds in proteins. 
D)  rotting the teeth.

Question 14

Catabolism builds up molecules and anabolism breaks down molecules.

Accepted Answer

A) True 
 B)False

Question 15

Each individual has her or his own genetic code.

Accepted Answer

A) True 
 B)False

Question 16

The molecule that an enzyme affects is its _________.

Accepted Answer

The answer of The molecule that an enzyme affects is...

Question 17

The basic steps of an enzyme-catalyzed reaction are:

Accepted Answer

A)  substrate and product combine, forming an S-P complex. The reaction occurs, enzymes are released, and the unchanged substrate is released and recycled. 
B)  substrate and enzyme combine, forming an E-S complex. The reaction occurs, products are released, and the unchanged enzyme is released and recycled. 
C)  substrate, enzyme, and product combine, forming an S-E-P complex. The reaction occurs, enzymes are released, and the unchanged enzyme is released and recycled. 
D)  enzyme and product combine, forming an E-P complex. The reaction reverses, enzymes are released, and the unchanged substrate is released and recycled. 
A)  substrate and product combine, forming an S-P complex. The reaction occurs, enzymes are released, and the unchanged substrate is released and recycled. 
B)  substrate and enzyme combine, forming an E-S complex. The reaction occurs, products are released, and the unchanged enzyme is released and recycled. 
C)  substrate, enzyme, and product combine, forming an S-E-P complex. The reaction occurs, enzymes are released, and the unchanged enzyme is released and recycled. 
D)  enzyme and product combine, forming an E-P complex. The reaction reverses, enzymes are released, and the unchanged substrate is released and recycled.

Exam 4: Cellular Metabolism

DNA replication occurs

During DNA replication,

Which of the following best describes the interaction between an enzyme and its substrate?

The genetic code is the correspondence between DNA sequence and amino acid sequence of a protein.

The complete set of genetic instructions in an individual is the ______.

The two strands of a DNA molecule have opposite orientation.

Mutagens are factors that cause mutation.

Genetic information is contained in protein molecules and is passed from one parent to another.

In cellular respiration,

In dehydration synthesis of a carbohydrate,

A part of a gene that is a DNA sequence 333 nucleotides long encodes ___ amino acids.

What is the function of ATP molecules in living cells?

Arsenic poisoning harms the body by

Catabolism builds up molecules and anabolism breaks down molecules.

Each individual has her or his own genetic code.

The molecule that an enzyme affects is its _________.

The basic steps of an enzyme-catalyzed reaction are:

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Tissues

Integumentary System

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System I: Basic Structure and Function

Nervous System II: Division of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System

Nutrition and Metabolism

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Based Balance

Reproductive Systems

Pregnancy, Growth, and Development

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