Question 1

RNA molecules differ from DNA molecules in several ways.(choose the best answer. )

Accepted Answer

A)  RNA molecules are single-stranded;their nucleotides include the sugar ribose and the nucleotide uracil. 
B)  RNA molecules are double-stranded;their nucleotides include the sugar ribose and the nucleotide uracil. 
C)  RNA molecules are single-stranded;their nucleotides include the sugar deoxyribose and the nucleotide uracil. 
D)  RNA molecules are double-stranded;their nucleotides include the sugar deoxyribose and the nucleotide uracil. 
E)  RNA molecules are triple-stranded;their nucleotides include the sugar glucose and the nucleotide uracil. 
A)  RNA molecules are single-stranded;their nucleotides include the sugar ribose and the nucleotide uracil. 
B)  RNA molecules are double-stranded;their nucleotides include the sugar ribose and the nucleotide uracil. 
C)  RNA molecules are single-stranded;their nucleotides include the sugar deoxyribose and the nucleotide uracil. 
D)  RNA molecules are double-stranded;their nucleotides include the sugar deoxyribose and the nucleotide uracil. 
E)  RNA molecules are triple-stranded;their nucleotides include the sugar glucose and the nucleotide uracil. A

Question 2

Catalysis is the speeding of a chemical reaction.

Accepted Answer

A) True 
 B)False  True

Question 3

Anabolism includes

Accepted Answer

A)  the buildup of larger molecules from smaller ones,requiring energy. 
B)  all processes required to maintain life. 
C)  processes that decompose structures in cells. 
D)  the breakdown of larger molecules into smaller ones,releasing energy. 
E)  the taking in of proteins from the cell membrane. 
A)  the buildup of larger molecules from smaller ones,requiring energy. 
B)  all processes required to maintain life. 
C)  processes that decompose structures in cells. 
D)  the breakdown of larger molecules into smaller ones,releasing energy. 
E)  the taking in of proteins from the cell membrane. A

Question 4

A genome is a section of DNA in which the nitrogenous base sequence encodes a specific sequence of amino acids.

Accepted Answer

A) True 
 B)False

Question 5

Oxidation is a process that forms bonds between the atoms of molecules.

Accepted Answer

A) True 
 B)False

Question 6

Enzymes

Accepted Answer

A)  increase activation energy. 
B)  slow metabolic reactions. 
C)  are mostly nucleic acids. 
D)  do not change as they control reactions. 
E)  are consumed in reactions. 
A)  increase activation energy. 
B)  slow metabolic reactions. 
C)  are mostly nucleic acids. 
D)  do not change as they control reactions. 
E)  are consumed in reactions.

Question 7

The genetic code

Accepted Answer

A)  is a sequence of amino acids that instructs cells how to make specific nucleic acids. 
B)  is a sequence of nucleic acid bases that instructs cells how to make specific protein molecules. 
C)  is the sequence of nucleus,rough ER,smooth ER,and the Golgi apparatus. 
D)  is a sequence of proteins embedded in the cell membrane. 
E)  is a sequence of amino acids and DNA bases. 
A)  is a sequence of amino acids that instructs cells how to make specific nucleic acids. 
B)  is a sequence of nucleic acid bases that instructs cells how to make specific protein molecules. 
C)  is the sequence of nucleus,rough ER,smooth ER,and the Golgi apparatus. 
D)  is a sequence of proteins embedded in the cell membrane. 
E)  is a sequence of amino acids and DNA bases.

Question 8

An example of catabolism is

Accepted Answer

A)  the formation of water. 
B)  hydrolysis. 
C)  dehydration synthesis. 
D)  two amino acids forming a dipeptide. 
E)  building a cell membrane. 
A)  the formation of water. 
B)  hydrolysis. 
C)  dehydration synthesis. 
D)  two amino acids forming a dipeptide. 
E)  building a cell membrane.

Question 9

Each enzyme acts only on a particular chemical called its

Accepted Answer

A)  gene. 
B)  catalyst. 
C)  activator. 
D)  complement. 
E)  substrate. 
A)  gene. 
B)  catalyst. 
C)  activator. 
D)  complement. 
E)  substrate.

Question 10

All mutations are harmful.

Accepted Answer

A) True 
 B)False

Question 11

Anabolism and catabolism together constitute

Accepted Answer

A)  metabolism. 
B)  protein synthesis. 
C)  dehydration synthesis. 
D)  hydrolysis. 
E)  digestion. 
A)  metabolism. 
B)  protein synthesis. 
C)  dehydration synthesis. 
D)  hydrolysis. 
E)  digestion.

Question 12

Enzymes are nucleic acids that promote specific chemical reactions.

Accepted Answer

A) True 
 B)False

Question 13

Enzymes enable chemical reactions in organisms to proceed fast enough to sustain life by

Accepted Answer

A)  raising the activation energy. 
B)  lowering the activation energy. 
C)  creating more efficient metabolic pathways. 
D)  bringing energy in the form of ATP molecules into cells. 
E)  sending ATP molecules out of cells. 
A)  raising the activation energy. 
B)  lowering the activation energy. 
C)  creating more efficient metabolic pathways. 
D)  bringing energy in the form of ATP molecules into cells. 
E)  sending ATP molecules out of cells.

Question 14

A piece of bread held in the mouth begins to taste sweet as large carbohydrate molecules are broken down into smaller sugars.These reactions are examples of

Accepted Answer

A)  DNA guiding the production of a particular protein. 
B)  dehydration synthesis. 
C)  anabolism. 
D)  DNA synthesis. 
E)  catabolism. 
A)  DNA guiding the production of a particular protein. 
B)  dehydration synthesis. 
C)  anabolism. 
D)  DNA synthesis. 
E)  catabolism.

Question 15

Cellular respiration occurs in three distinct,yet interconnected series of reactions.Which of the following gives the correct order of these reactions?

Accepted Answer

A)  electron transport chain,glycolysis and citric acid cycle 
B)  glycolysis,electron transport chain and citric acid cycle 
C)  citric acid cycle,glycolysis and electron transport chain 
D)  glycolysis,citric acid cycle and electron transport chain 
E)  electron transport chain,citric acid cycle,glycolysis 
A)  electron transport chain,glycolysis and citric acid cycle 
B)  glycolysis,electron transport chain and citric acid cycle 
C)  citric acid cycle,glycolysis and electron transport chain 
D)  glycolysis,citric acid cycle and electron transport chain 
E)  electron transport chain,citric acid cycle,glycolysis

Question 16

The proportion of the human genome that encodes protein is about ________ percent.

Accepted Answer

A)  98 
B)  50 
C)  30 
D)  10 
E)  2 
A)  98 
B)  50 
C)  30 
D)  10 
E)  2

Question 17

The part of an enzyme that combines with a specific part of the substrate is called the

Accepted Answer

A)  passive site. 
B)  active site. 
C)  passive diffusion. 
D)  nucleus. 
E)  co-factor. 
A)  passive site. 
B)  active site. 
C)  passive diffusion. 
D)  nucleus. 
E)  co-factor.

Question 18

Special proteins called enzymes control the reactions of metabolism.

Accepted Answer

A) True 
 B)False

Question 19

Genes pass to the next generation in eggs and sperm.

Accepted Answer

A) True 
 B)False

Question 20

Copying of the information in DNA into RNA,which can exit the nucleus,is called

Accepted Answer

A)  translation. 
B)  deamination. 
C)  transcription. 
D)  replication. 
E)  transduction. 
A)  translation. 
B)  deamination. 
C)  transcription. 
D)  replication. 
E)  transduction.

RNA molecules differ from DNA molecules in several ways.(choose the best answer. )

Catalysis is the speeding of a chemical reaction.

Anabolism includes

A genome is a section of DNA in which the nitrogenous base sequence encodes a specific sequence of amino acids.

Oxidation is a process that forms bonds between the atoms of molecules.

Enzymes

The genetic code

An example of catabolism is

Each enzyme acts only on a particular chemical called its

All mutations are harmful.

Anabolism and catabolism together constitute

Enzymes are nucleic acids that promote specific chemical reactions.

Enzymes enable chemical reactions in organisms to proceed fast enough to sustain life by

A piece of bread held in the mouth begins to taste sweet as large carbohydrate molecules are broken down into smaller sugars.These reactions are examples of

Cellular respiration occurs in three distinct,yet interconnected series of reactions.Which of the following gives the correct order of these reactions?

The proportion of the human genome that encodes protein is about ________ percent.

The part of an enzyme that combines with a specific part of the substrate is called the

Special proteins called enzymes control the reactions of metabolism.

Genes pass to the next generation in eggs and sperm.

Copying of the information in DNA into RNA,which can exit the nucleus,is called

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Tissues

Integumentary System

Skeletal System

Muscular System

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System and Nutrition

Respiratory System

Urinary System

Water, electrolyte, and Acid-Base Balance

Reproductive Systems

Pregnancy, growth, development, and Genetics

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Exam 4: Cellular Metabolism

RNA molecules differ from DNA molecules in several ways.(choose the best answer. )

Catalysis is the speeding of a chemical reaction.

Anabolism includes

A genome is a section of DNA in which the nitrogenous base sequence encodes a specific sequence of amino acids.

Oxidation is a process that forms bonds between the atoms of molecules.

Enzymes

The genetic code

An example of catabolism is

Each enzyme acts only on a particular chemical called its

All mutations are harmful.

Anabolism and catabolism together constitute

Enzymes are nucleic acids that promote specific chemical reactions.

Enzymes enable chemical reactions in organisms to proceed fast enough to sustain life by

A piece of bread held in the mouth begins to taste sweet as large carbohydrate molecules are broken down into smaller sugars.These reactions are examples of

Cellular respiration occurs in three distinct,yet interconnected series of reactions.Which of the following gives the correct order of these reactions?

The proportion of the human genome that encodes protein is about ________ percent.

The part of an enzyme that combines with a specific part of the substrate is called the

Special proteins called enzymes control the reactions of metabolism.

Genes pass to the next generation in eggs and sperm.

Copying of the information in DNA into RNA,which can exit the nucleus,is called

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Tissues

Integumentary System

Skeletal System

Muscular System

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System and Nutrition

Respiratory System

Urinary System

Water, electrolyte, and Acid-Base Balance

Reproductive Systems

Pregnancy, growth, development, and Genetics

Filters