Question 1

Ricin would affect 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. C

Question 2

The difference between normal and sickle-cell hemoglobin is based upon

Accepted Answer

A)  the number of amino acids in the molecule. 
B)  the substitution of one amino acid for another. 
C)  the number and orientation of the amino acid chain attached to the heme portion of the molecule. 
D)  the number of oxygen molecules that can be carried. 
E)  the types of bone marrow that produce it. 
A)  the number of amino acids in the molecule. 
B)  the substitution of one amino acid for another. 
C)  the number and orientation of the amino acid chain attached to the heme portion of the molecule. 
D)  the number of oxygen molecules that can be carried. 
E)  the types of bone marrow that produce it. B

Question 3

How many coding codons are there?

Accepted Answer

A)  4 
B)  20 
C)  30 
D)  60 
E)  64 
A)  4 
B)  20 
C)  30 
D)  60 
E)  64 D

Question 4

How many different codons are there?

Accepted Answer

A)  4 
B)  16 
C)  32 
D)  64 
E)  128 
A)  4 
B)  16 
C)  32 
D)  64 
E)  128

Question 5

If there were only 2 RNA nucleotides and each codon was 4 letters long,how many amino acids could be coded for?

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  16 
E)  32 
A)  2 
B)  4 
C)  8 
D)  16 
E)  32

Question 6

What,specifically,determines the sequence of amino acids in a polypeptide of eukaryotes?

Accepted Answer

A)  the DNA gene 
B)  the introns 
C)  the exons 
D)  the initial mRNA transcript 
E)  the tRNA anticodons 
A)  the DNA gene 
B)  the introns 
C)  the exons 
D)  the initial mRNA transcript 
E)  the tRNA anticodons

Question 7

If the DNA coding sequence was CGA?????ATC,the mRNA would be

Accepted Answer

A) GCU?????UAG. 
B) AUC?????CGA. 
C) UAG?????GCU. 
D) UAG?????CGU. 
E) none of these. 
A) GCU?????UAG. 
B) AUC?????CGA. 
C) UAG?????GCU. 
D) UAG?????CGU. 
E) none of these.

Question 8

In RNA synthesis,thymine is complementary to

Accepted Answer

A)  guanine 
B)  adenine 
C)  cytosine 
D)  uracil 
E)  more than one of these 
A)  guanine 
B)  adenine 
C)  cytosine 
D)  uracil 
E)  more than one of these

Question 9

If an mRNA carries CUCGAU as a sequence,what would be the complementary sequence on the DNA?

Accepted Answer

A)  CTCGAT 
B)  GUGCUA 
C)  GTGCAT 
D)  GAGCTA 
E)  ACATGC 
A)  CTCGAT 
B)  GUGCUA 
C)  GTGCAT 
D)  GAGCTA 
E)  ACATGC

Question 10

What kind of a biomolecule is ricin?

Accepted Answer

A)  protein 
B)  lipid 
C)  nucleic acid 
D)  carbohydrate 
E)  none of these - it is an inorganic mineral 
A)  protein 
B)  lipid 
C)  nucleic acid 
D)  carbohydrate 
E)  none of these - it is an inorganic mineral

Question 11

To what do transcription factors attach?

Accepted Answer

A)  promoters 
B)  stop codons 
C)  start codons 
D)  polyA tails 
E)  introns 
A)  promoters 
B)  stop codons 
C)  start codons 
D)  polyA tails 
E)  introns

Question 12

Which of the following master genes determines the sex of a mammal?

Accepted Answer

A)  SHY 
B)  ART 
C)  SRY 
D)  PAX 
E)  FOX 
A)  SHY 
B)  ART 
C)  SRY 
D)  PAX 
E)  FOX

Question 13

What type of mutation results in sickle cell anemia?

Accepted Answer

A)  base- pair substitution 
B)  insertion 
C)  deletion 
D)  frame-shift 
E)  gene duplication 
A)  base- pair substitution 
B)  insertion 
C)  deletion 
D)  frame-shift 
E)  gene duplication

Question 14

During transcription,

Accepted Answer

A)  non-coding sequences are removed from the RNA transcript. 
B)  regulatory proteins attach to the DNA at the promotor site. 
C)  DNA polymerase assembles RNA nucleotides. 
D)  the entire DNA strand opens up for complete gene transcription. 
E)  tRNA brings nucleotides to the DNA strand. 
A)  non-coding sequences are removed from the RNA transcript. 
B)  regulatory proteins attach to the DNA at the promotor site. 
C)  DNA polymerase assembles RNA nucleotides. 
D)  the entire DNA strand opens up for complete gene transcription. 
E)  tRNA brings nucleotides to the DNA strand.

Question 15

rRNA differs from other types of RNA in what way or ways?

Accepted Answer

A)  it acts as an enzyme. 
B)  it carries amino acids. 
C)  it is complexed with a protein. 
D)  it carries the complete instructions for making a protein. 
E)  it is different in more than one of these ways. 
A)  it acts as an enzyme. 
B)  it carries amino acids. 
C)  it is complexed with a protein. 
D)  it carries the complete instructions for making a protein. 
E)  it is different in more than one of these ways.

Question 16

Classification.Answer the questions in reference to the five RNA codons listed below.
 a.AUG
b.CAU
c.UUG
d.UUA
e.AAA
-A RNA codon of GUA would be complementary to this tRNA anticodon.

Accepted Answer

The answer of Classification.Answer the questions in reference to the...

Question 17

Which of the following statements is (are)INCORRECT about ricin?

Accepted Answer

A)  Ricin is a naturally occurring toxic protein. 
B)  The use of ricin as a weapon is banned by the Geneva Convention. 
C)  Ricin does not have an antidote. 
D)  Ricin is obtained from the castor-oil plant. 
E)  Ricin stops protein synthesis by blocking the activity of DNA. 
A)  Ricin is a naturally occurring toxic protein. 
B)  The use of ricin as a weapon is banned by the Geneva Convention. 
C)  Ricin does not have an antidote. 
D)  Ricin is obtained from the castor-oil plant. 
E)  Ricin stops protein synthesis by blocking the activity of DNA.

Question 18

MATCHING
Answer the following questions regarding protein synthesis by matching each term with the most appropriate description.
a.anticodon
b.rRNA
c.codon
d.ribosome
e.genetic code
f.translation termination
g.messenger RNA
h.promoters
i.transcription
j.translation
-all of the mRNA codons

Accepted Answer

The answer of MATCHING
Answer the following questions regarding protein synthesis...

Question 19

In transcription of protein synthesis,adenine pairs with

Accepted Answer

A)  thymine 
B)  uracil 
C)  guanine 
D)  adenine 
E)  cytosine 
A)  thymine 
B)  uracil 
C)  guanine 
D)  adenine 
E)  cytosine

Question 20

Four of the five answers listed below are related to translation.Select the EXCEPTION.

Accepted Answer

A)  RNA polymerase 
B)  mRNA 
C)  tRNA 
D)  ribosome 
E)  amino acid 
A)  RNA polymerase 
B)  mRNA 
C)  tRNA 
D)  ribosome 
E)  amino acid

Exam 7: Gene Expression and Control

Ricin would affect a human cell by

The difference between normal and sickle-cell hemoglobin is based upon

How many coding codons are there?

How many different codons are there?

If there were only 2 RNA nucleotides and each codon was 4 letters long,how many amino acids could be coded for?

What,specifically,determines the sequence of amino acids in a polypeptide of eukaryotes?

If the DNA coding sequence was CGA?????ATC,the mRNA would be

In RNA synthesis,thymine is complementary to

If an mRNA carries CUCGAU as a sequence,what would be the complementary sequence on the DNA?

What kind of a biomolecule is ricin?

To what do transcription factors attach?

Which of the following master genes determines the sex of a mammal?

What type of mutation results in sickle cell anemia?

During transcription,

rRNA differs from other types of RNA in what way or ways?

Classification.Answer the questions in reference to the five RNA codons listed below. a.AUG b.CAU c.UUG d.UUA e.AAA -A RNA codon of GUA would be complementary to this tRNA anticodon.

Which of the following statements is (are)INCORRECT about ricin?

MATCHING Answer the following questions regarding protein synthesis by matching each term with the most appropriate description. a.anticodon b.rRNA c.codon d.ribosome e.genetic code f.translation termination g.messenger RNA h.promoters i.transcription j.translation -all of the mRNA codons

In transcription of protein synthesis,adenine pairs with

Four of the five answers listed below are related to translation.Select the EXCEPTION.

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 Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

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

Filters