Question 1

All of the following participate in DNA replication except

Accepted Answer

A) DNA. 
B) ribosomes. 
C) DNA ligase. 
D) DNA helicase. 
E) DNA polymerase. 
A) DNA. 
B) ribosomes. 
C) DNA ligase. 
D) DNA helicase. 
E) DNA polymerase.

Question 2

Since there are no genes coding for carbohydrates, nucleic acids, or lipids, how do cells produce them?

Accepted Answer

A) Enzymes encoded by genes synthesize these products. 
B) Cells are born with all the products they need. 
C) Cells absorb these products by endocytosis. 
D) Cells import these products from older cells. 
E) Cells can produce carbohydrates, nucleic acids, and lipids out of proteins. 
A) Enzymes encoded by genes synthesize these products. 
B) Cells are born with all the products they need. 
C) Cells absorb these products by endocytosis. 
D) Cells import these products from older cells. 
E) Cells can produce carbohydrates, nucleic acids, and lipids out of proteins.

Question 3

A is composed of a granular cluster of eight proteins called with DNA wound around them, plus a short segment of linker DNA.

Accepted Answer

A) nucleosome; centrosomes 
B) nucleosome; histones 
C) chromosome; histones 
D) chromosome; centromeres 
E) centromere; chromatin 
A) nucleosome; centrosomes 
B) nucleosome; histones 
C) chromosome; histones 
D) chromosome; centromeres 
E) centromere; chromatin

Question 4

Naked DNA is called chromatin.

Accepted Answer

A) True 
 B)False

Question 5

All these are found in the karyotype of a normal human male, except

Accepted Answer

A) 46 chromosomes. 
B) 23 pairs of homologous chromosomes. 
C) X and Y chromosomes. 
D) 46 chromatids. 
E) 92 DNA molecules. 
A) 46 chromosomes. 
B) 23 pairs of homologous chromosomes. 
C) X and Y chromosomes. 
D) 46 chromatids. 
E) 92 DNA molecules.

Question 6

The genetic code is the correspondence between the and the that they represent.

Accepted Answer

A) DNA molecule; 20 amino acids 
B) DNA molecule; 64 amino acids 
C) mRNA anticodons; 20 amino acids 
D) mRNA codons; 64 amino acids 
E) mRNA codons; 20 amino acids 
A) DNA molecule; 20 amino acids 
B) DNA molecule; 64 amino acids 
C) mRNA anticodons; 20 amino acids 
D) mRNA codons; 64 amino acids 
E) mRNA codons; 20 amino acids

Question 7

Which of these processes occurs during a cell's first gap (G1) phase?

Accepted Answer

A) DNA is semiconservatively replicated. 
B) The nuclear envelope breaks down. 
C) The cell synthesizes the enzymes that control mitosis. 
D) The cell synthesizes proteins and grows. 
E) The chromatin condenses into visible chromosomes. 
A) DNA is semiconservatively replicated. 
B) The nuclear envelope breaks down. 
C) The cell synthesizes the enzymes that control mitosis. 
D) The cell synthesizes proteins and grows. 
E) The chromatin condenses into visible chromosomes.

Question 8

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

Accepted Answer

A) a nitrogenous base 
B) a pyrimidine 
C) a purine 
D) a nucleotide 
E) a fragment of the sugar-phosphate backbone 
A) a nitrogenous base 
B) a pyrimidine 
C) a purine 
D) a nucleotide 
E) a fragment of the sugar-phosphate backbone

Question 9

opens up one segment of the DNA helix during replication, whereas adds complementary free nucleotides to the exposed DNA strand.

Accepted Answer

A) DNA ligase; DNA helicase 
B) DNA helicase; DNA polymerase 
C) DNA ligase; DNA polymerase 
D) DNA helicase; DNA ligase 
E) DNA polymerase; DNA ligase 
A) DNA ligase; DNA helicase 
B) DNA helicase; DNA polymerase 
C) DNA ligase; DNA polymerase 
D) DNA helicase; DNA ligase 
E) DNA polymerase; DNA ligase

Question 10

This figure shows translation of mRNA.What does "A" show?

Accepted Answer

A) the molecule that carries codons 
B) the molecule that carries anticodons 
C) the molecule that carries base triplets 
D) the molecule that carries amino acids 
E) the molecule that carries tRNA 
A) the molecule that carries codons 
B) the molecule that carries anticodons 
C) the molecule that carries base triplets 
D) the molecule that carries amino acids 
E) the molecule that carries tRNA

Question 11

The stage at which chromosomes aggregate along the equator of a cell is

Accepted Answer

A) prophase. 
B) metaphase. 
C) anaphase. 
D) telophase. 
E) interphase. 
A) prophase. 
B) metaphase. 
C) anaphase. 
D) telophase. 
E) interphase.

Question 12

This figure shows translation of mRNA.What does "E" show?

Accepted Answer

A) a newly synthesized amino acid 
B) a newly synthesized polypeptide 
C) a newly synthesized nucleic acid 
D) mRNA 
E) tRNA 
A) a newly synthesized amino acid 
B) a newly synthesized polypeptide 
C) a newly synthesized nucleic acid 
D) mRNA 
E) tRNA

Question 13

DNA is composed of double-ring nitrogenous bases, whereas RNA is composed of single-ring nitrogenous bases.

Accepted Answer

A) True 
 B)False

Question 14

In familial hypercholesterolemia, individuals with two abnormal alleles die of heart attacks in childhood, those with only one abnormal allele typically die as young adults, and those with two normal alleles have normal life expectancies.This exemplifies

Accepted Answer

A) penetrance. 
B) codominance. 
C) pleiotropy. 
D) complete dominance. 
E) incomplete dominance. 
A) penetrance. 
B) codominance. 
C) pleiotropy. 
D) complete dominance. 
E) incomplete dominance.

Question 15

Chromatin shortens and thickens, coiling into compact rods, during

Accepted Answer

A) telophase. 
B) anaphase. 
C) interphase. 
D) prophase. 
E) metaphase. 
A) telophase. 
B) anaphase. 
C) interphase. 
D) prophase. 
E) metaphase.

Question 16

Cell division is stimulated by and suppressed by .

Accepted Answer

A) mitosis; cytokinesis 
B) mitosis; contact inhibition 
C) cell size; cytokinesis 
D) growth factors; contact inhibition 
E) cell size; contact inhibition 
A) mitosis; cytokinesis 
B) mitosis; contact inhibition 
C) cell size; cytokinesis 
D) growth factors; contact inhibition 
E) cell size; contact inhibition

Question 17

In the cell cycle, DNA polymerase is most active in phase.

Accepted Answer

A) S 
B) G1 
C) G2 
D) M 
E) G0 
A) S 
B) G1 
C) G2 
D) M 
E) G0

Question 18

Cytokinesis overlaps with which phase of mitosis?

Accepted Answer

A) the S phase 
B) telophase 
C) metaphase 
D) prophase 
E) interphase 
A) the S phase 
B) telophase 
C) metaphase 
D) prophase 
E) interphase

Question 19

Hemophilia is caused by a sex-linked recessive allele.This means that

Accepted Answer

A) women can be carriers but cannot get hemophilia. 
B) the gene is found on the Y chromosome. 
C) a man can give the allele to his son but not to his daughter. 
D) a son who has hemophilia inherited the allele from his mother. 
E) a son who has hemophilia inherited the allele from his father. 
A) women can be carriers but cannot get hemophilia. 
B) the gene is found on the Y chromosome. 
C) a man can give the allele to his son but not to his daughter. 
D) a son who has hemophilia inherited the allele from his mother. 
E) a son who has hemophilia inherited the allele from his father.

Question 20

The alleles possessed by all members of a population collectively are called the

Accepted Answer

A) species DNA. 
B) population DNA. 
C) gene pool. 
D) chromosomes. 
E) genes. 
A) species DNA. 
B) population DNA. 
C) gene pool. 
D) chromosomes. 
E) genes.

Exam 4: Genes and Cellular Function

All of the following participate in DNA replication except

Since there are no genes coding for carbohydrates, nucleic acids, or lipids, how do cells produce them?

A is composed of a granular cluster of eight proteins called with DNA wound around them, plus a short segment of linker DNA.

Naked DNA is called chromatin.

All these are found in the karyotype of a normal human male, except

The genetic code is the correspondence between the and the that they represent.

Which of these processes occurs during a cell's first gap (G1) phase?

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

opens up one segment of the DNA helix during replication, whereas adds complementary free nucleotides to the exposed DNA strand.

This figure shows translation of mRNA.What does "A" show?

The stage at which chromosomes aggregate along the equator of a cell is

This figure shows translation of mRNA.What does "E" show?

DNA is composed of double-ring nitrogenous bases, whereas RNA is composed of single-ring nitrogenous bases.

In familial hypercholesterolemia, individuals with two abnormal alleles die of heart attacks in childhood, those with only one abnormal allele typically die as young adults, and those with two normal alleles have normal life expectancies.This exemplifies

Chromatin shortens and thickens, coiling into compact rods, during

Cell division is stimulated by and suppressed by .

In the cell cycle, DNA polymerase is most active in phase.

Cytokinesis overlaps with which phase of mitosis?

Hemophilia is caused by a sex-linked recessive allele.This means that

The alleles possessed by all members of a population collectively are called the

Major Themes of Anatomy and Physiology

The Chemistry of Life

Cellular Form and Function

The Human Tissues

The Integumentary System

Bone Tissue

The Skeletal System

Joints

The Muscular System

Muscular Tissue

Nervous Tissue

The Spinal Cord, Spinal Nerves, and Somatic Reflexes

The Brain and Cranial Nerves

The Autonomic Nervous System and Visceral Reflexes

Sense Organs

The Endocrine System

The Circulatory System: Blood

The Circulatory System: Heart

The Circulatory System: Blood Vessels and Circulation

The Lymphatic and Immune Systems

The Respiratory System

The Urinary System

Fluid, Electrolyte, and Acid - Base Balance

The Digestive System

Nutrition and Metabolism

The Male Reproductive System

The Female Reproductive System

Human Development and Aging

Anatomical Terminology and Body Planes

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