Question 1

Genes pass to the next generation in eggs and sperm.

Accepted Answer

A) True 
 B)False

Question 2

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.F) C) and D)
G) A) and C)

Question 3

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,glycolysisF) B) and E)
G) B) and D)

Question 4

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

Accepted Answer

A)   98
B)   50
C)   30
D)   10
E)   2F) None of the above
G) A) and C)

Question 5

All mutations are harmful.

Accepted Answer

A) True 
 B)False

Question 6

Each enzyme acts only on a particular chemical called its

Accepted Answer

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

Question 7

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.F) D) and E)
G) A) and B)

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

Catalysis is the speeding of a chemical reaction.

Accepted Answer

A) True 
 B)False  True

Question 10

Enzymes are nucleic acids that promote specific chemical reactions.

Accepted Answer

A) True 
 B)False

Question 11

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.F) B) and E)
G) All of the above

Question 12

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.F) A) and E)
G) A) and B)

Question 13

Anabolism and catabolism together constitute

Accepted Answer

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

Question 14

Special proteins called enzymes control the reactions of metabolism.

Accepted Answer

A) True 
 B)False

Question 15

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.F) A) and E)
G) All of the above

Question 16

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.F) All of the above
G) B) and E)

Question 17

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 18

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.F) B) and E)
G) C) and E) A

Question 19

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.F) A) and C)
G) C) and D) A

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.F) B) and D)
G) B) and C)

Exam 4: Cellular Metabolism

Genes pass to the next generation in eggs and sperm.

Correct AnswerverifiedShow Answer

Enzymes

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

All mutations are harmful.

Correct AnswerverifiedShow Answer

Each enzyme acts only on a particular chemical called its

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Catalysis is the speeding of a chemical reaction.

Correct AnswerverifiedTrue

Enzymes are nucleic acids that promote specific chemical reactions.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Anabolism and catabolism together constitute

Correct AnswerverifiedShow Answer

Special proteins called enzymes control the reactions of metabolism.

Correct AnswerverifiedShow Answer

An example of catabolism is

Correct AnswerverifiedShow Answer

The genetic code

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Anabolism includes

Correct AnswerverifiedA

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

Correct AnswerverifiedA

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

Correct AnswerverifiedShow Answer

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