Question 1

Eye color is caused by genes at multiple loci.This phenomenon is called

Accepted Answer

A)  pleiotropy.
B)  sex linkage.
C)  polygenic inheritance.
D)  incomplete dominance.
E)  multiple carriers.F) A) and D)
G) None of the above

Question 2

The enzyme RNA polymerase participates in translation.

Accepted Answer

A) True 
 B)False

Question 3

DNA replication is called semiconservative because

Accepted Answer

A)  each daughter DNA consists of one new helix and one old helix.
B)  each daughter DNA consists of one new nucleotide and one old nucleotide.
C)  each daughter DNA consists of one new chromatid and one old chromatid.
D)  each daughter cell receives one new chromatid and one old chromatid.
E)  each daughter cell receives one new helix and one old helix.F) A) and E)
G) A) and B)

Question 4

After mitosis each chromosome consists of two parallel filaments called sister chromatids.

Accepted Answer

A) True 
 B)False

Question 5

DNA is a polymer of , which consist of a sugar, a phosphate group, and a .

Accepted Answer

A)  amino acids; nucleotide
B)  nucleic acids; nucleotide
C)  nucleotides; nitrogenous base
D)  nucleotides; nucleic acid
E)  proteins; nucleotideF) A) and E)
G) B) and D)

Question 6

Many genes occur in alternative forms called alleles.

Accepted Answer

A) True 
 B)False

Question 7

Germ cells have unpaired chromosomes and are thus called cells.

Accepted Answer

A)  23; somatic
B)  23; haploid
C)  23; diploid
D)  46; somatic
E)  46; diploidF) B) and C)
G) A) and B)

Question 8

A cell finishing mitosis has DNA molecules, while a cell finishing DNA replication has DNA molecules.

Accepted Answer

A)  46; 46
B)  46; 92
C)  46; 23
D)  23; 46
E)  23; 23F) A) and E)
G) D) and E)

Question 9

All of the body's nonreproductive cells, called , usually have and are thus called cells.

Accepted Answer

A)  germ cells; 23 pairs of chromosomes; haploid
B)  germ cells; 23 chromosomes; haploid
C)  somatic cells; 23 pairs of chromosomes; haploid
D)  somatic cells; 23 pairs of chromosomes; diploid
E)  somatic cells; 23 chromosomes; diploidF) C) and D)
G) A) and C)

Question 10

This figure shows the DNA structure.What does "C" represent?

Accepted Answer

A)  a uracil
B)  a phosphate group
C)  a deoxyribose
D)  a pyrimidine
E)  a purineF) D) and E)
G) B) and D)

Question 11

The gene coding for a polypeptide made of 51 amino acids would have a minimum number of

Accepted Answer

A)  20 bases.
B)  51 bases.
C)  between 51 bases and 102 bases.
D)  between 102 bases and 153 bases.
E)  153 bases.F) A) and B)
G) B) and C)

Question 12

After translation, a protein may undergo structural changes called modifications.

Accepted Answer

A)  splicing
B)  posttranscriptional
C)  posttranslational
D)  polyribosomal
E)  secretoryF) A) and B)
G) C) and D)

Question 13

The human genome consists of

Accepted Answer

A)  about 35,000 genes.
B)  over 2 million genes.
C)  A, T, C, G, and U.
D)  DNA and RNA.
E)  the genotype and phenotype.F) C) and D)
G) B) and D)

Question 14

A karyotype shows the chromosomes sorted and isolated from a cell in .

Accepted Answer

A)  23; interphase
B)  23; metaphase
C)  46; prophase
D)  46; metaphase
E)  46; S phaseF) C) and E)
G) A) and B)

Question 15

Mitosis is responsible for embryonic development and tissue growth.

Accepted Answer

A) True 
 B)False

Question 16

are turned on or off by regulatory proteins in accordance with changing needs for the they encode.

Accepted Answer

A)  Enzymes; products
B)  Ribosomes; proteins
C)  Genes; proteins
D)  Proteins; genes
E)  Genes; ribosomesF) A) and D)
G) C) and E)

Question 17

Which of the following omits some stage(s)  of the cell cycle?

Accepted Answer

A)  G1, S, G2, mitotic phase
B)  interphase, mitotic phase
C)  G1, DNA replication, G2, mitotic phase
D)  prophase, metaphase, anaphase, telophase, cytokinesis
E)  interphase, prophase, metaphase, anaphase, telophase, cytokinesisF) A) and E)
G) B) and D)

Question 18

is the DNA base sequence complementary to the strand TGCCAT.

Accepted Answer

A)  TGCCAT
B)  UGCCAU
C)  ACGGTA
D)  ACGGUA
E)  ACCGTAF) B) and D)
G) C) and D)

Question 19

Transcription occurs in the , but most translation occurs in the .

Accepted Answer

A)  nucleus; cytoplasm
B)  nucleus; nucleolus
C)  cytoplasm; nucleus
D)  nucleolus; cytoplasm
E)  nucleolus; rough endoplasmic reticulumF) A) and D)
G) A) and C)

Question 20

G1, S, and G2 phases of the cell cycle are collectively called

Accepted Answer

A)  interphase.
B)  telophase.
C)  cytokinesis.
D)  prophase.
E)  anaphase.F) B) and D)
G) A) and C)

Exam 4: Genes and Cellular Function

All of the body's nonreproductive cells, called , usually have and are thus called cells.

Correct AnswerverifiedShow Answer

After mitosis each chromosome consists of two parallel filaments called sister chromatids.

Correct AnswerverifiedShow Answer

Mitosis is responsible for embryonic development and tissue growth.

Correct AnswerverifiedShow Answer

is the DNA base sequence complementary to the strand TGCCAT.

Correct AnswerverifiedShow Answer

Which of the following omits some stage(s) of the cell cycle?

Correct AnswerverifiedShow Answer

DNA replication is called semiconservative because

Correct AnswerverifiedShow Answer

Eye color is caused by genes at multiple loci.This phenomenon is called

Correct AnswerverifiedShow Answer

The gene coding for a polypeptide made of 51 amino acids would have a minimum number of

Correct AnswerverifiedShow Answer

DNA is a polymer of , which consist of a sugar, a phosphate group, and a .

Correct AnswerverifiedShow Answer

Many genes occur in alternative forms called alleles.

Correct AnswerverifiedShow Answer

A karyotype shows the chromosomes sorted and isolated from a cell in .

Correct AnswerverifiedShow Answer

The human genome consists of

Correct AnswerverifiedShow Answer

After translation, a protein may undergo structural changes called modifications.

Correct AnswerverifiedShow Answer

A cell finishing mitosis has DNA molecules, while a cell finishing DNA replication has DNA molecules.

Correct AnswerverifiedShow Answer

G1, S, and G2 phases of the cell cycle are collectively called

Correct AnswerverifiedShow Answer

This figure shows the DNA structure.What does "C" represent?

Correct AnswerverifiedShow Answer

Transcription occurs in the , but most translation occurs in the .

Correct AnswerverifiedShow Answer

The enzyme RNA polymerase participates in translation.

Correct AnswerverifiedShow Answer

are turned on or off by regulatory proteins in accordance with changing needs for the they encode.

Correct AnswerverifiedShow Answer

Germ cells have unpaired chromosomes and are thus called cells.

Correct AnswerverifiedShow Answer

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