Question 1

Membrane-bound receptors

Accepted Answer

A)  are small, lipid soluble molecules. 
B)  have their receptor sites on the outer surface of the plasma membrane. 
C)  can interact with DNA in the nucleus. 
D)  do not exhibit specificity. 
E)  have no effect on the cell. 
A)  are small, lipid soluble molecules. 
B)  have their receptor sites on the outer surface of the plasma membrane. 
C)  can interact with DNA in the nucleus. 
D)  do not exhibit specificity. 
E)  have no effect on the cell.

Question 2

Endocytosis

Accepted Answer

A)  is movement of water through a selectively permeable membrane. 
B)  is a process that requires a carrier molecule but does not use cellular energy. 
C)  is the bulk uptake of material through the plasma membrane by vesicle formation. 
D)  moves material out of the cell. 
E)  ends cell functions. 
A)  is movement of water through a selectively permeable membrane. 
B)  is a process that requires a carrier molecule but does not use cellular energy. 
C)  is the bulk uptake of material through the plasma membrane by vesicle formation. 
D)  moves material out of the cell. 
E)  ends cell functions.

Question 3

Membrane proteins that extend into the lipid bilayer are called

Accepted Answer

A)  peripheral proteins. 
B)  extrinsic proteins. 
C)  integral proteins. 
D)  glycoproteins. 
E)  lipoproteins. 
A)  peripheral proteins. 
B)  extrinsic proteins. 
C)  integral proteins. 
D)  glycoproteins. 
E)  lipoproteins.

Question 4

What type of cell would have an abundance of lysosomes?

Accepted Answer

A)  white blood cell, a phagocyte 
B)  mucus cell (secretes mucus) 
C)  liver cells that detoxify hydrogen peroxide 
D)  cardiac muscle cells (require large amounts of ATP) 
E)  fibroblast (makes protein fibers) 
A)  white blood cell, a phagocyte 
B)  mucus cell (secretes mucus) 
C)  liver cells that detoxify hydrogen peroxide 
D)  cardiac muscle cells (require large amounts of ATP) 
E)  fibroblast (makes protein fibers)

Question 5

Which of the following cell organelles is CORRECTLY matched with its function?

Accepted Answer

A)  nucleolus - contains the genetic material of the cell 
B)  microtubules - cell support 
C)  mitochondria - protein synthesis 
D)  smooth ER - ATP production 
E)  ribosome - energy production 
A)  nucleolus - contains the genetic material of the cell 
B)  microtubules - cell support 
C)  mitochondria - protein synthesis 
D)  smooth ER - ATP production 
E)  ribosome - energy production

Question 6

Microtubules

Accepted Answer

A)  are the smallest components of the cytoskeleton. 
B)  contain the protein myosin. 
C)  provide structure and support to the cytoplasm. 
D)  are solid, supporting rods of protein. 
E)  are a component of mitochondria. 
A)  are the smallest components of the cytoskeleton. 
B)  contain the protein myosin. 
C)  provide structure and support to the cytoplasm. 
D)  are solid, supporting rods of protein. 
E)  are a component of mitochondria.

Question 7

When a person trains for running long distances, which of the following organelles increase in his/her muscles?

Accepted Answer

A)  rough endoplasmic reticulum 
B)  enzymes for glycolysis 
C)  basal bodies 
D)  lysosomes 
E)  mitochondria 
A)  rough endoplasmic reticulum 
B)  enzymes for glycolysis 
C)  basal bodies 
D)  lysosomes 
E)  mitochondria

Question 8

White blood cells digest other cells and so would be expected to

Accepted Answer

A)  have large numbers of lysosomes. 
B)  possess cilia on their surfaces so they can move quickly. 
C)  excrete excess salt as a result of all this eating. 
D)  expel their nuclei to make room for all of the cells they eat. 
E)  have mitochondria to energize them. 
A)  have large numbers of lysosomes. 
B)  possess cilia on their surfaces so they can move quickly. 
C)  excrete excess salt as a result of all this eating. 
D)  expel their nuclei to make room for all of the cells they eat. 
E)  have mitochondria to energize them.

Question 9

What cell type would have many Golgi apparatus?

Accepted Answer

A)  white blood cell, a phagocyte 
B)  mucus cell (secretes mucus) 
C)  liver cells that detoxify hydrogen peroxide 
D)  cardiac muscle cells (require large amounts of ATP) 
E)  fibroblast (makes protein fibers) 
A)  white blood cell, a phagocyte 
B)  mucus cell (secretes mucus) 
C)  liver cells that detoxify hydrogen peroxide 
D)  cardiac muscle cells (require large amounts of ATP) 
E)  fibroblast (makes protein fibers)

Question 10

DNA replication occurs during

Accepted Answer

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

Question 11

-What structure does "B" represent on the diagram of the plasma membrane?

Accepted Answer

A)  membrane channel protein 
B)  phospholipid bilayer 
C)  internal membrane surface 
D)  peripheral protein 
E)  integral protein 
A)  membrane channel protein 
B)  phospholipid bilayer 
C)  internal membrane surface 
D)  peripheral protein 
E)  integral protein

Question 12

What organelles are the sites of protein synthesis?

Accepted Answer

A)  nucleus 
B)  ribosomes 
C)  lysosomes 
D)  mitochondria 
E)  centrioles 
A)  nucleus 
B)  ribosomes 
C)  lysosomes 
D)  mitochondria 
E)  centrioles

Question 13

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

Accepted Answer

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

Question 14

The sacs containing hydrolytic enzymes are called

Accepted Answer

A)  nucleus. 
B)  ribosomes. 
C)  lysosomes. 
D)  mitochondria. 
E)  centrioles. 
A)  nucleus. 
B)  ribosomes. 
C)  lysosomes. 
D)  mitochondria. 
E)  centrioles.

Question 15

What type of cell would have an abundance of peroxisomes?

Accepted Answer

A)  white blood cell, a phagocyte 
B)  mucus cell (secretes mucus) 
C)  liver cells that detoxify hydrogen peroxide 
D)  cardiac muscle cells (require large amounts of ATP) 
E)  fibroblast (makes protein fibers) 
A)  white blood cell, a phagocyte 
B)  mucus cell (secretes mucus) 
C)  liver cells that detoxify hydrogen peroxide 
D)  cardiac muscle cells (require large amounts of ATP) 
E)  fibroblast (makes protein fibers)

Question 16

Which of the following events occurs in the secondary active transport of glucose?

Accepted Answer

A)  Na+ ions and glucose are cotransported by the same carrier molecule. 
B)  The Na+-K+ pump maintains a Na+ concentration gradient inside the cell. 
C)  Energy comes from diffusion of Na+ down their concentration gradient. 
D)  Glucose is moved against its concentration gradient into the cell. 
E)  All of these choices are correct. 
A)  Na+ ions and glucose are cotransported by the same carrier molecule. 
B)  The Na+-K+ pump maintains a Na+ concentration gradient inside the cell. 
C)  Energy comes from diffusion of Na+ down their concentration gradient. 
D)  Glucose is moved against its concentration gradient into the cell. 
E)  All of these choices are correct.

Question 17

The centrioles are found in a zone of cytoplasm close to the nucleus called the

Accepted Answer

A)  cytogel. 
B)  cytosol. 
C)  vacuole. 
D)  centrosome. 
E)  proteasome. 
A)  cytogel. 
B)  cytosol. 
C)  vacuole. 
D)  centrosome. 
E)  proteasome.

Question 18

Which of the following is NOT true of G-protein complex action?

Accepted Answer

A)  Stimulates a cell by means of extracellular chemical signals. 
B)  Stimulates a cell by opening ion channels in the plasma membrane. 
C)  Stimulates a cell by means of intracellular chemical signals. 
D)  Stimulates a cell by activating enzymes associated with the plasma membrane. 
E)  Acts as an intermediate between a receptor and other cellular proteins. 
A)  Stimulates a cell by means of extracellular chemical signals. 
B)  Stimulates a cell by opening ion channels in the plasma membrane. 
C)  Stimulates a cell by means of intracellular chemical signals. 
D)  Stimulates a cell by activating enzymes associated with the plasma membrane. 
E)  Acts as an intermediate between a receptor and other cellular proteins.

Question 19

Which of the following correctly matches a nuclear structure with its function?

Accepted Answer

A)  chromosomes - contains RNA and histones 
B)  nuclear envelope - contains the nucleolar organizer 
C)  nuclear pores - allow molecules to move between the nucleus and cytoplasm. 
D)  chromatin - fluid portion of the nucleus 
E)  nucleolus - DNA synthesis 
A)  chromosomes - contains RNA and histones 
B)  nuclear envelope - contains the nucleolar organizer 
C)  nuclear pores - allow molecules to move between the nucleus and cytoplasm. 
D)  chromatin - fluid portion of the nucleus 
E)  nucleolus - DNA synthesis

Question 20

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

Accepted Answer

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

Exam 3: Cell Biology

Membrane-bound receptors

Endocytosis

Membrane proteins that extend into the lipid bilayer are called

What type of cell would have an abundance of lysosomes?

Which of the following cell organelles is CORRECTLY matched with its function?

Microtubules

When a person trains for running long distances, which of the following organelles increase in his/her muscles?

White blood cells digest other cells and so would be expected to

What cell type would have many Golgi apparatus?

DNA replication occurs during

-What structure does "B" represent on the diagram of the plasma membrane?

What organelles are the sites of protein synthesis?

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

The sacs containing hydrolytic enzymes are called

What type of cell would have an abundance of peroxisomes?

Which of the following events occurs in the secondary active transport of glucose?

The centrioles are found in a zone of cytoplasm close to the nucleus called the

Which of the following is NOT true of G-protein complex action?

Which of the following correctly matches a nuclear structure with its function?

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

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, Electrolytes, and Acidbase Balance

Reproductive System

Development, Growth, Aging, and Genetics

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