Question 1

Thtransfer RNA differs froother types of RNA becausit

Accepted Answer

A) transfers genetic information from cell nucleus to cytoplasm. 
B) specifies the amino acid sequence of a particular protein. 
C) carries an amino acid at one end. 
D) contains codons. 
E) does none of these. 
A) transfers genetic information from cell nucleus to cytoplasm. 
B) specifies the amino acid sequence of a particular protein. 
C) carries an amino acid at one end. 
D) contains codons. 
E) does none of these.

Question 2

Which of thfollowing processes is (are) part of genexpression?
I.replication
II.transcription
III.translation

Accepted Answer

A) I and II 
B) I and III 
C) II and III 
D) I, II, and III 
E) III only 
A) I and II 
B) I and III 
C) II and III 
D) I, II, and III 
E) III only

Question 3

Which of thfollowing items coulDNA bcompareto?

Accepted Answer

A) a ship 
B) a subway 
C) an encyclopedia 
D) a caterpillar 
E) an experimental protocol 
A) a ship 
B) a subway 
C) an encyclopedia 
D) a caterpillar 
E) an experimental protocol

Question 4

Ricin woulaffect a human cell by

Accepted Answer

A) inactivating synthesis of carbohydrates. 
B) inhibiting hydrolysis of carbohydrates. 
C) preventing protein synthesis. 
D) interfering with hydrolysis of lipids. 
E) overactivating nucleic acid metabolism. 
A) inactivating synthesis of carbohydrates. 
B) inhibiting hydrolysis of carbohydrates. 
C) preventing protein synthesis. 
D) interfering with hydrolysis of lipids. 
E) overactivating nucleic acid metabolism.

Question 5

Which of thfollowing particles is targeteby ricin?

Accepted Answer

A) mitochondria 
B) DNA polymerase 
C) RNA polymerase 
D) the small ribosomal subunit 
E) the large ribosomal subunit 
A) mitochondria 
B) DNA polymerase 
C) RNA polymerase 
D) the small ribosomal subunit 
E) the large ribosomal subunit

Question 6

If each nucleotidcodes for a singlamino acid, how many different types of amino acids coulbcombineto forproteins?

Accepted Answer

A) 4 
B) 16 
C) 20 
D) 64 
E) none of these 
A) 4 
B) 16 
C) 20 
D) 64 
E) none of these

Question 7

Thinsertion of how many nucleotides into a genetic sequencdoes less damagto thcodthan thinsertion of other numbers of nucleotides?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 8

Each "word" in thmRNA languagconsists of how many letters?

Accepted Answer

A) 3 
B) 4 
C) 5 
D) more than 5 
E) none of these 
A) 3 
B) 4 
C) 5 
D) more than 5 
E) none of these

Question 9

All thdifferent kinds of RNA artranscribein the

Accepted Answer

A) mitochondria. 
B) cytoplasm. 
C) ribosomes. 
D) nucleus. 
E) endoplasmic reticulum. 
A) mitochondria. 
B) cytoplasm. 
C) ribosomes. 
D) nucleus. 
E) endoplasmic reticulum.

Question 10

In most species, all mRNA transcripts begin with

Accepted Answer

A) methionine. 
B) a ribosome. 
C) AUG. 
D) the P site. 
E) an anticodon. 
A) methionine. 
B) a ribosome. 
C) AUG. 
D) the P site. 
E) an anticodon.

Question 11

During thtranscription process, uracil will pair with

Accepted Answer

A) ribose. 
B) adenine. 
C) guanine. 
D) cytosine. 
E) thymine. 
A) ribose. 
B) adenine. 
C) guanine. 
D) cytosine. 
E) thymine.

Question 12

Which of thfollowing molecules arcomponents of a ribosomanhavenzymatic activity (in thribosome)?

Accepted Answer

A) rRNA 
B) protein 
C) DNA 
D) fats 
E) steroids 
A) rRNA 
B) protein 
C) DNA 
D) fats 
E) steroids

Question 13

A ribosomcontains

Accepted Answer

A) RNA. 
B) DNA. 
C) proteins. 
D) RNA and proteins. 
E) DNA and proteins. 
A) RNA. 
B) DNA. 
C) proteins. 
D) RNA and proteins. 
E) DNA and proteins.

Question 14

Four of thfivanswers listebelow arrelateto genexpression.Select thEXCEPTION.

Accepted Answer

A) translation 
B) transcription 
C) DNA polymerase 
D) mRNA 
E) tRNA 
A) translation 
B) transcription 
C) DNA polymerase 
D) mRNA 
E) tRNA

Question 15

Therarhow many different kinds of RNA nucleotides?

Accepted Answer

A) 3 
B) 4 
C) 5 
D) 6 
E) 12 
A) 3 
B) 4 
C) 5 
D) 6 
E) 12

Question 16

During transcription,

Accepted Answer

A) several amino acids are assembled by the messenger RNA molecule at one time. 
B) a special sequence called a promoter is necessary for transcription to begin. 
C) certain polypeptide sequences are governed by one ribosome whereas other sequences are produced by other ribosomes. 
D) the transfer RNA molecules arrange the messenger RNA codons into the appropriate sequence. 
E) none of these occur. 
A) several amino acids are assembled by the messenger RNA molecule at one time. 
B) a special sequence called a promoter is necessary for transcription to begin. 
C) certain polypeptide sequences are governed by one ribosome whereas other sequences are produced by other ribosomes. 
D) the transfer RNA molecules arrange the messenger RNA codons into the appropriate sequence. 
E) none of these occur.

Question 17

Eukaryotic ribosomes function as

Accepted Answer

A) a single unit. 
B) two-part units. 
C) three-part units. 
D) four-part units. 
E) a multidivisional unit. 
A) a single unit. 
B) two-part units. 
C) three-part units. 
D) four-part units. 
E) a multidivisional unit.

Question 18

Therarhow many different kinds of amino acids in proteins?

Accepted Answer

A) 3 
B) 6 
C) 12 
D) 20 
E) 28 
A) 3 
B) 6 
C) 12 
D) 20 
E) 28

Question 19

In mutation,

Accepted Answer

A) the new codon may specify a different amino acid but may not change the function of the new protein produced. 
B) the new codon may specify the same amino acid as the old codon. 
C) the new codon and resulting amino acid may destroy the function of the protein specified. 
D) the new codon may have no serious effect. 
E) all of these may occur. 
A) the new codon may specify a different amino acid but may not change the function of the new protein produced. 
B) the new codon may specify the same amino acid as the old codon. 
C) the new codon and resulting amino acid may destroy the function of the protein specified. 
D) the new codon may have no serious effect. 
E) all of these may occur.

Question 20

Of all thdifferent codons that exist, threof them

Accepted Answer

A) are involved in mutations. 
B) do not specify a particular amino acid. 
C) cannot be copied. 
D) provide punctuations or instructions such as "stop." 
E) do not specify a particular amino acid and signal instructions such as "stop." 
A) are involved in mutations. 
B) do not specify a particular amino acid. 
C) cannot be copied. 
D) provide punctuations or instructions such as "stop." 
E) do not specify a particular amino acid and signal instructions such as "stop."

Exam 7: Gene Expression and Control

Thtransfer RNA differs froother types of RNA becausit

Which of thfollowing processes is (are) part of genexpression? I.replication II.transcription III.translation

Which of thfollowing items coulDNA bcompareto?

Ricin woulaffect a human cell by

Which of thfollowing particles is targeteby ricin?

If each nucleotidcodes for a singlamino acid, how many different types of amino acids coulbcombineto forproteins?

Thinsertion of how many nucleotides into a genetic sequencdoes less damagto thcodthan thinsertion of other numbers of nucleotides?

Each "word" in thmRNA languagconsists of how many letters?

All thdifferent kinds of RNA artranscribein the

In most species, all mRNA transcripts begin with

During thtranscription process, uracil will pair with

Which of thfollowing molecules arcomponents of a ribosomanhavenzymatic activity (in thribosome)?

A ribosomcontains

Four of thfivanswers listebelow arrelateto genexpression.Select thEXCEPTION.

Therarhow many different kinds of RNA nucleotides?

During transcription,

Eukaryotic ribosomes function as

Therarhow many different kinds of amino acids in proteins?

In mutation,

Of all thdifferent codons that exist, threof them

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

Dna Structure and Function

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolutionunit

Population Ecology

Communities and Ecosystems

The Biosphere and Human Eff Ects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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