Question 1

Molecules that serve as chemical signals to open or close gated ion channels are

Accepted Answer

A)  isotopes. 
B)  ligands. 
C)  responders. 
D)  communicators. 
E)  membrane potentials. 
A)  isotopes. 
B)  ligands. 
C)  responders. 
D)  communicators. 
E)  membrane potentials.

Question 2

A red blood cell that is placed in a hypertonic solution

Accepted Answer

A)  loses water. 
B)  gains water. 
C)  floats. 
D)  ruptures. 
E)  neither gains nor loses water. 
A)  loses water. 
B)  gains water. 
C)  floats. 
D)  ruptures. 
E)  neither gains nor loses water.

Question 3

The greater the concentration of a solution, the greater the

Accepted Answer

A)  tendency for water to diffuse from the solution. 
B)  osmotic pressure of the solution. 
C)  number of carrier molecules present. 
D)  amount of solvent. 
E)  rate of facilitated diffusion. 
A)  tendency for water to diffuse from the solution. 
B)  osmotic pressure of the solution. 
C)  number of carrier molecules present. 
D)  amount of solvent. 
E)  rate of facilitated diffusion.

Question 4

Channel proteins

Accepted Answer

A)  are binding sites for other molecules. 
B)  utilize the G protein complex to function. 
C)  are found only on endoplasmic reticulum. 
D)  allow cells to recognize one another. 
E)  provide a tunnel through which ions or molecules can enter or leave the cell. 
A)  are binding sites for other molecules. 
B)  utilize the G protein complex to function. 
C)  are found only on endoplasmic reticulum. 
D)  allow cells to recognize one another. 
E)  provide a tunnel through which ions or molecules can enter or leave the cell.

Question 5

When a sperm cell comes into contact with an egg cell, there is a change in the electrical charge across the plasma membrane and various channel proteins close. These channels would be called

Accepted Answer

A)  open-gated channels. 
B)  voltage-gated channels. 
C)  chemical-gated channels. 
D)  ligand-gated channels. 
E)  nongated ion channels. 
A)  open-gated channels. 
B)  voltage-gated channels. 
C)  chemical-gated channels. 
D)  ligand-gated channels. 
E)  nongated ion channels.

Question 6

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

Accepted Answer

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

Question 7

A mitochondrial disease is passed to offspring via the father.

Accepted Answer

A) True 
 B)False

Question 8

Cyanide stops the production of ATP. Which of the following processes would be affected?

Accepted Answer

A)  simple diffusion 
B)  osmosis 
C)  active transport 
D)  facilitated diffusion 
E)  filtration 
A)  simple diffusion 
B)  osmosis 
C)  active transport 
D)  facilitated diffusion 
E)  filtration

Question 9

Cells produce and respond to chemical and electrical signals as a means of

Accepted Answer

A)  communicating. 
B)  metabolizing. 
C)  reproducing. 
D)  synthesizing. 
E)  using energy. 
A)  communicating. 
B)  metabolizing. 
C)  reproducing. 
D)  synthesizing. 
E)  using energy.

Question 10

A cell can meet increased energy demands by an increase in

Accepted Answer

A)  its overall size so it has more room to generate energy. 
B)  the number of mitochondria. 
C)  lysosomal enzyme and ribosome activity within the cell. 
D)  nuclear DNA activity. 
E)  ribosomal subunits. 
A)  its overall size so it has more room to generate energy. 
B)  the number of mitochondria. 
C)  lysosomal enzyme and ribosome activity within the cell. 
D)  nuclear DNA activity. 
E)  ribosomal subunits.

Question 11

Cilia and flagella are distinguished from each other on the basis of

Accepted Answer

A)  width and numbers. 
B)  length and numbers. 
C)  depth and numbers. 
D)  length and width. 
E)  None of these choices is correct. 
A)  width and numbers. 
B)  length and numbers. 
C)  depth and numbers. 
D)  length and width. 
E)  None of these choices is correct.

Question 12

Which of the following events occurs in the nucleus?

Accepted Answer

A)  ATP synthesis 
B)  ribosomal proteins formed 
C)  chromatin condenses to form chromosomes 
D)  manufacture of phospholipids 
E)  None of these events occurs in the nucleus. 
A)  ATP synthesis 
B)  ribosomal proteins formed 
C)  chromatin condenses to form chromosomes 
D)  manufacture of phospholipids 
E)  None of these events occurs in the nucleus.

Question 13

What term dealing with cancer means "not inclined to spread or become worse'?

Accepted Answer

A)  metastasis 
B)  malignant 
C)  sarcoma 
D)  benign 
E)  carcinoma 
A)  metastasis 
B)  malignant 
C)  sarcoma 
D)  benign 
E)  carcinoma

Question 14

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

Question 15

What term dealing with cancer means "spreading to a new site"?

Accepted Answer

A)  metastasis 
B)  malignant 
C)  sarcoma 
D)  benign 
E)  carcinoma 
A)  metastasis 
B)  malignant 
C)  sarcoma 
D)  benign 
E)  carcinoma

Question 16

The cytoskeleton consists of

Accepted Answer

A)  lipochromes, microfilaments, and microtubules. 
B)  actin filaments, mitochondria, and intermediate filaments. 
C)  microfilaments, mitochondria, and lipochromes. 
D)  microtubules, actin filaments, and intermediate filaments. 
E)  ribosomes, the nucleus, and the Golgi apparatus. 
A)  lipochromes, microfilaments, and microtubules. 
B)  actin filaments, mitochondria, and intermediate filaments. 
C)  microfilaments, mitochondria, and lipochromes. 
D)  microtubules, actin filaments, and intermediate filaments. 
E)  ribosomes, the nucleus, and the Golgi apparatus.

Question 17

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

Accepted Answer

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

Question 18

Which of the following would increase the maximum rate of facilitated diffusion?

Accepted Answer

A)  increase the concentration gradient of the transported molecule to the saturation point 
B)  decrease the concentration gradient of the transported molecule 
C)  increase the concentration of the competitive molecules 
D)  increased ATP synthesis 
E)  None of these choices is correct. 
A)  increase the concentration gradient of the transported molecule to the saturation point 
B)  decrease the concentration gradient of the transported molecule 
C)  increase the concentration of the competitive molecules 
D)  increased ATP synthesis 
E)  None of these choices is correct.

Question 19

What organelle packages materials for secretion from the cell?

Accepted Answer

A)  endoplasmic reticulum 
B)  Golgi apparatus 
C)  nucleolus 
D)  peroxisomes 
E)  flagellum 
A)  endoplasmic reticulum 
B)  Golgi apparatus 
C)  nucleolus 
D)  peroxisomes 
E)  flagellum

Question 20

-What structure does "E" 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)  receptor protein 
A)  membrane channel protein 
B)  phospholipid bilayer 
C)  internal membrane surface 
D)  peripheral protein 
E)  receptor protein

Exam 3: Cell Biology

Molecules that serve as chemical signals to open or close gated ion channels are

A red blood cell that is placed in a hypertonic solution

The greater the concentration of a solution, the greater the

Channel proteins

When a sperm cell comes into contact with an egg cell, there is a change in the electrical charge across the plasma membrane and various channel proteins close. These channels would be called

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

A mitochondrial disease is passed to offspring via the father.

Cyanide stops the production of ATP. Which of the following processes would be affected?

Cells produce and respond to chemical and electrical signals as a means of

A cell can meet increased energy demands by an increase in

Cilia and flagella are distinguished from each other on the basis of

Which of the following events occurs in the nucleus?

What term dealing with cancer means "not inclined to spread or become worse'?

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

What term dealing with cancer means "spreading to a new site"?

The cytoskeleton consists of

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

Which of the following would increase the maximum rate of facilitated diffusion?

What organelle packages materials for secretion from the cell?

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

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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