Question 1

Red blood cells are placed in a solution of 0.9% NaCl and no diffusion or osmosis is observed. This means that the solution is ________.

Accepted Answer

A) isotonic 
B) hypotonic 
C) hypertonic 
D) isertonic 
A) isotonic 
B) hypotonic 
C) hypertonic 
D) isertonic

Question 2

Stem cells taken from a person to be used to treat a disease in that same person come from

Accepted Answer

A) embryos or fetuses. 
B) the person or a blood relative. 
C) existing cell populations or reprogrammed cells. 
D) two different cell types. 
A) embryos or fetuses. 
B) the person or a blood relative. 
C) existing cell populations or reprogrammed cells. 
D) two different cell types.

Question 3

Which of following does not influence the rate of molecular movement?

Accepted Answer

A) Distance 
B) The concentration of the substance 
C) The amount of energy available for transport molecules 
D) The molecular weight of the diffusing molecules 
A) Distance 
B) The concentration of the substance 
C) The amount of energy available for transport molecules 
D) The molecular weight of the diffusing molecules

Question 4

The three major parts of a cell are

Accepted Answer

A) the endoplasmic reticulum, Golgi apparatus, and vesicles. 
B) the nucleus, nucleolus, and nuclear envelope. 
C) microtubules, ribosomes, and centrosomes. 
D) the nucleus, cytoplasm, and cell membrane. 
A) the endoplasmic reticulum, Golgi apparatus, and vesicles. 
B) the nucleus, nucleolus, and nuclear envelope. 
C) microtubules, ribosomes, and centrosomes. 
D) the nucleus, cytoplasm, and cell membrane.

Question 5

During cell division, the chromosomes did not separate properly. This likely means that the centrioles failed to attach to what structure?

Accepted Answer

A) Centrosome 
B) Cilia 
C) Nucleus 
D) Microtubules 
A) Centrosome 
B) Cilia 
C) Nucleus 
D) Microtubules

Question 6

All cell types divide at the same rate.

Accepted Answer

A) True 
 B)False

Question 7

Stem cells may be activated after an injury, helping to heal.

Accepted Answer

A) True 
 B)False

Question 8

Filtration requires hydrostatic pressure.

Accepted Answer

A) True 
 B)False

Question 9

Which stages have double the amount of chromosomal DNA compared to stage G1?

Accepted Answer

A) G2 
B) Prophase 
C) Metaphase 
D) Apoptosis 
A) G2 
B) Prophase 
C) Metaphase 
D) Apoptosis

Question 10

For which of the following organelles are the structure and function correctly described?

Accepted Answer

A) Endoplasmic reticulum-a network of interconnected membranes forming sacs and canals that packages protein molecules for secretion 
B) Ribosomes-membranous vesicles containing digestive enzymes 
C) Golgi apparatus-particles, composed of protein and RNA, which synthesize proteins 
D) Mitochondrion-nonmembranous structure that synthesizes proteins 
A) Endoplasmic reticulum-a network of interconnected membranes forming sacs and canals that packages protein molecules for secretion 
B) Ribosomes-membranous vesicles containing digestive enzymes 
C) Golgi apparatus-particles, composed of protein and RNA, which synthesize proteins 
D) Mitochondrion-nonmembranous structure that synthesizes proteins

Question 11

Transcytosis combines diffusion and active transport.

Accepted Answer

A) True 
 B)False

Question 12

Tara discovers a rapidly growing lump that doubles in size over a month. A doctor does a biopsy and discovers it's a form of cancer, which can result if

Accepted Answer

A) mitosis is too infrequent. 
B) mitosis is too frequent. 
C) the cell cycle stops. 
D) the cell cycle runs backward. 
A) mitosis is too infrequent. 
B) mitosis is too frequent. 
C) the cell cycle stops. 
D) the cell cycle runs backward.

Question 13

What characteristic do simple diffusion and facilitated diffusion share?

Accepted Answer

A) Both require cellular energy for the transport of substances. 
B) Both move water across a semipermeable membrane. 
C) Both require a special carrier molecule to move substances across the membrane. 
D) Both move a substance from a region of higher concentration to one of lower concentration without using cellular energy. 
A) Both require cellular energy for the transport of substances. 
B) Both move water across a semipermeable membrane. 
C) Both require a special carrier molecule to move substances across the membrane. 
D) Both move a substance from a region of higher concentration to one of lower concentration without using cellular energy.

Question 14

Abnormal rates of mitosis can lead to poor wound healing and delayed growth.

Accepted Answer

A) True 
 B)False

Question 15

Microfilaments and microtubules are part of the cytoskeleton.

Accepted Answer

A) True 
 B)False

Question 16

Cytoskeletal structures that are not found in all cell types are

Accepted Answer

A) microtubules. 
B) microfilaments. 
C) myofibrils. 
D) intermediate filaments. 
A) microtubules. 
B) microfilaments. 
C) myofibrils. 
D) intermediate filaments.

Question 17

What is the relationship of osmotic pressure to the number of solute particles in a solution?

Accepted Answer

A) The lower the number of impermeant solute particles, the greater the osmotic pressure. 
B) The greater the number of impermeant solute particles, the lower the osmotic pressure. 
C) The greater the osmotic pressure, the lower the number of impermeant solute particles. 
D) The greater the number of impermeant solute particles, the greater the osmotic pressure. 
A) The lower the number of impermeant solute particles, the greater the osmotic pressure. 
B) The greater the number of impermeant solute particles, the lower the osmotic pressure. 
C) The greater the osmotic pressure, the lower the number of impermeant solute particles. 
D) The greater the number of impermeant solute particles, the greater the osmotic pressure.

Question 18

A hypotonic solution

Accepted Answer

A) has a lower concentration (number)of impermeant solute than do the cells in the solution. 
B) would cause cells in the solution to lose water. 
C) has a higher osmotic pressure than do the cells in the solution. 
D) causes cells to shrink. 
A) has a lower concentration (number)of impermeant solute than do the cells in the solution. 
B) would cause cells in the solution to lose water. 
C) has a higher osmotic pressure than do the cells in the solution. 
D) causes cells to shrink.

Question 19

Cilia and flagella extend from certain cells, enabling them to move.

Accepted Answer

A) True 
 B)False

Question 20

As a cell grows,

Accepted Answer

A) the relationship between its surface area and volume remains unchanged. 
B) its surface area increases to a lesser degree than its volume. 
C) its volume increases to a lesser degree than its surface area. 
D) its requirement for nutrients increases to a lesser degree than its requirement for oxygen. 
A) the relationship between its surface area and volume remains unchanged. 
B) its surface area increases to a lesser degree than its volume. 
C) its volume increases to a lesser degree than its surface area. 
D) its requirement for nutrients increases to a lesser degree than its requirement for oxygen.

Exam 3: Cells

Red blood cells are placed in a solution of 0.9% NaCl and no diffusion or osmosis is observed. This means that the solution is ________.

Stem cells taken from a person to be used to treat a disease in that same person come from

Which of following does not influence the rate of molecular movement?

The three major parts of a cell are

During cell division, the chromosomes did not separate properly. This likely means that the centrioles failed to attach to what structure?

All cell types divide at the same rate.

Stem cells may be activated after an injury, helping to heal.

Filtration requires hydrostatic pressure.

Which stages have double the amount of chromosomal DNA compared to stage G1?

For which of the following organelles are the structure and function correctly described?

Transcytosis combines diffusion and active transport.

Tara discovers a rapidly growing lump that doubles in size over a month. A doctor does a biopsy and discovers it's a form of cancer, which can result if

What characteristic do simple diffusion and facilitated diffusion share?

Abnormal rates of mitosis can lead to poor wound healing and delayed growth.

Microfilaments and microtubules are part of the cytoskeleton.

Cytoskeletal structures that are not found in all cell types are

What is the relationship of osmotic pressure to the number of solute particles in a solution?

A hypotonic solution

Cilia and flagella extend from certain cells, enabling them to move.

As a cell grows,

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System I: Basic Structure and Function

Nervous System II: Divisions of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System

Nutrition and Metabolism

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Pregnancy, Growth, and Development

Genetics and Genomics

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