Question 1

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution "C"?

Accepted Answer

A)  isotonic solution 
B)  crenated 
C)  hypotonic solution 
D)  lyzed 
E)  hypertonic solution 
A)  isotonic solution 
B)  crenated 
C)  hypotonic solution 
D)  lyzed 
E)  hypertonic solution D

Question 2

The structural RNA of ribosomes is a

Accepted Answer

A)  proenzyme. 
B)  gene. 
C)  codon. 
D)  pre-mRNA. 
E)  ribosomal RNA (rRN
A) . 
A)  proenzyme. 
B)  gene. 
C)  codon. 
D)  pre-mRNA. 
E)  ribosomal RNA (rRN
A) . E

Question 3

Active transport

Accepted Answer

A)  requires ATP. 
B)  involves vesicle formation. 
C)  does not require metabolic energy (ATP). 
D)  can move substances along their concentration gradient. 
E)  follows osmotic pressure gradients. 
A)  requires ATP. 
B)  involves vesicle formation. 
C)  does not require metabolic energy (ATP). 
D)  can move substances along their concentration gradient. 
E)  follows osmotic pressure gradients. A

Question 4

Mitochondria

Accepted Answer

A)  contains DNA. 
B)  have inner and outer membranes. 
C)  have inner folds called cristae. 
D)  are the cell's power plants. 
E)  All of these choices are correct. 
A)  contains DNA. 
B)  have inner and outer membranes. 
C)  have inner folds called cristae. 
D)  are the cell's power plants. 
E)  All of these choices are correct.

Question 5

Which of the following molecules contains the anticodon?

Accepted Answer

A)  mRNA 
B)  rRNA 
C)  tRNA 
D)  DNA 
E)  None of these choices are correct. 
A)  mRNA 
B)  rRNA 
C)  tRNA 
D)  DNA 
E)  None of these choices are correct.

Question 6

Vitamin A, a fat-soluble vitamin, would move across the plasma membrane into the cell

Accepted Answer

A)  through vitamin membrane channels. 
B)  in vesicles. 
C)  by dissolving in the lipid bilayer. 
D)  by active transport. 
E)  by transport with carrier molecules. 
A)  through vitamin membrane channels. 
B)  in vesicles. 
C)  by dissolving in the lipid bilayer. 
D)  by active transport. 
E)  by transport with carrier molecules.

Question 7

Three adjacent nucleotides in mRNA are called a

Accepted Answer

A)  pre-mRNA. 
B)  gene. 
C)  codon. 
D)  ribosomal RNA (rRN
A) . 
E)  proenzyme. 
A)  pre-mRNA. 
B)  gene. 
C)  codon. 
D)  ribosomal RNA (rRN
A) . 
E)  proenzyme.

Question 8

Before cell division occurs, DNA in the nucleus is condensed to form

Accepted Answer

A)  RNA. 
B)  genes. 
C)  cytosol. 
D)  chromosomes. 
E)  chromatin. 
A)  RNA. 
B)  genes. 
C)  cytosol. 
D)  chromosomes. 
E)  chromatin.

Question 9

The predominant lipid in the cell membrane is a

Accepted Answer

A)  triglyceride. 
B)  glycolipid. 
C)  phospholipid. 
D)  prostaglandin. 
E)  cholesterol. 
A)  triglyceride. 
B)  glycolipid. 
C)  phospholipid. 
D)  prostaglandin. 
E)  cholesterol.

Question 10

A particular membrane transport process exhibits saturation, uses carrier molecules, but does NOT require ATP. The process is probably

Accepted Answer

A)  active transport. 
B)  osmosis. 
C)  phagocytosis. 
D)  pinocytosis. 
E)  facilitated diffusion. 
A)  active transport. 
B)  osmosis. 
C)  phagocytosis. 
D)  pinocytosis. 
E)  facilitated diffusion.

Question 11

Which of the following is NOT true of a transmission electron microscope (TEM)?

Accepted Answer

A)  The electron beam is focused with electromagnets. 
B)  The specimen must be fixed in plastic. 
C)  The limit of resolution is about 0.1$\mu$m. 
D)  Electrons are passed through the specimen. 
E)  Gives the clearest three-dimensional images. 
A)  The electron beam is focused with electromagnets. 
B)  The specimen must be fixed in plastic. 
C)  The limit of resolution is about 0.1$\mu$m. 
D)  Electrons are passed through the specimen. 
E)  Gives the clearest three-dimensional images.

Question 12

Which mature cells do not have a nucleus?

Accepted Answer

A)  columnar cells of small intestines 
B)  columnar cells of upper respiratory tract 
C)  spermatozoa 
D)  macrophage (large, mobile white blood cell) 
E)  red blood cells 
A)  columnar cells of small intestines 
B)  columnar cells of upper respiratory tract 
C)  spermatozoa 
D)  macrophage (large, mobile white blood cell) 
E)  red blood cells

Question 13

All of the chemical reactions within a cell are known as cell

Accepted Answer

A)  communication. 
B)  inheritance. 
C)  metabolism. 
D)  movement. 
E)  reproduction. 
A)  communication. 
B)  inheritance. 
C)  metabolism. 
D)  movement. 
E)  reproduction.

Question 14

A protein that is converted to an active enzyme is a

Accepted Answer

A)  codon. 
B)  proenzyme. 
C)  gene. 
D)  pre-mRNA. 
E)  ribosomal RNA (rRN
A) . 
A)  codon. 
B)  proenzyme. 
C)  gene. 
D)  pre-mRNA. 
E)  ribosomal RNA (rRN
A) .

Question 15

What type of cells are covered with microvilli for increased absorption?

Accepted Answer

A)  columnar cells of small intestines 
B)  columnar cells of upper respiratory tract 
C)  macrophage (large, mobile white blood cell) 
D)  spermatozoa 
E)  red blood cells 
A)  columnar cells of small intestines 
B)  columnar cells of upper respiratory tract 
C)  macrophage (large, mobile white blood cell) 
D)  spermatozoa 
E)  red blood cells

Question 16

-Answer these questions about chromosome structure. What does "D" represent?

Accepted Answer

A)  chromosome 
B)  proteins 
C)  chromatin 
D)  centromere 
E)  chromatid 
A)  chromosome 
B)  proteins 
C)  chromatin 
D)  centromere 
E)  chromatid

Question 17

DNA replication occurs during

Accepted Answer

A)  the S phase of interphase. 
B)  the G1 phase of interphase. 
C)  metaphase. 
D)  anaphase. 
E)  telophase. 
A)  the S phase of interphase. 
B)  the G1 phase of interphase. 
C)  metaphase. 
D)  anaphase. 
E)  telophase.

Question 18

Which of the following statements concerning membrane transport across the plasma membrane is true?

Accepted Answer

A)  All molecules are moved across by active transport. 
B)  Water cannot move through the membrane. 
C)  Lipid-soluble substances pass through the membrane by dissolving in the lipid bilayer. 
D)  Generally, cations pass through the membrane more easily than anions. 
E)  Polar molecules are transported more easily than nonpolar molecules. 
A)  All molecules are moved across by active transport. 
B)  Water cannot move through the membrane. 
C)  Lipid-soluble substances pass through the membrane by dissolving in the lipid bilayer. 
D)  Generally, cations pass through the membrane more easily than anions. 
E)  Polar molecules are transported more easily than nonpolar molecules.

Question 19

Which of the following terms does NOT relate to the mitochondria?

Accepted Answer

A)  ATP 
B)  cristae 
C)  self-replicating 
D)  outer and inner membranes 
E)  vitamin A storage 
A)  ATP 
B)  cristae 
C)  self-replicating 
D)  outer and inner membranes 
E)  vitamin A storage

Question 20

In the nucleus, DNA is wrapped with proteins. This complex is called

Accepted Answer

A)  chromatin. 
B)  DNA particles. 
C)  nucleoli. 
D)  a DNA wrap. 
E)  cytoplasmic organelles. 
A)  chromatin. 
B)  DNA particles. 
C)  nucleoli. 
D)  a DNA wrap. 
E)  cytoplasmic organelles.

Exam 3: Cell Biology

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution "C"?

The structural RNA of ribosomes is a

Active transport

Mitochondria

Which of the following molecules contains the anticodon?

Vitamin A, a fat-soluble vitamin, would move across the plasma membrane into the cell

Three adjacent nucleotides in mRNA are called a

Before cell division occurs, DNA in the nucleus is condensed to form

The predominant lipid in the cell membrane is a

A particular membrane transport process exhibits saturation, uses carrier molecules, but does NOT require ATP. The process is probably

Which of the following is NOT true of a transmission electron microscope (TEM)?

Which mature cells do not have a nucleus?

All of the chemical reactions within a cell are known as cell

A protein that is converted to an active enzyme is a

What type of cells are covered with microvilli for increased absorption?

-Answer these questions about chromosome structure. What does "D" represent?

DNA replication occurs during

Which of the following statements concerning membrane transport across the plasma membrane is true?

Which of the following terms does NOT relate to the mitochondria?

In the nucleus, DNA is wrapped with proteins. This complex is called

The Human Organism

The Chemical Basis of Life

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolyte, and Acid-Based Balance

Reproductive System

Development, Growth, Aging, and Genetics

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