Question 1

The movement of molecules through a membrane by filtration requires

Accepted Answer

A) osmotic pressure. 
B) hydrostatic pressure. 
C) atmospheric pressure. 
D) barometric pressure. 
A) osmotic pressure. 
B) hydrostatic pressure. 
C) atmospheric pressure. 
D) barometric pressure.

Question 2

Some people cannot be infected with HIV because

Accepted Answer

A) they are already infected. 
B) their cells lack receptors that admit the virus. 
C) their cells have extra receptors for HIV. 
D) they were vaccinated. 
A) they are already infected. 
B) their cells lack receptors that admit the virus. 
C) their cells have extra receptors for HIV. 
D) they were vaccinated.

Question 3

Krabbe disease results from an abnormality that affects the ________ of nerve cells in the brain.

Accepted Answer

The answer of Krabbe disease results from an abnormality that...

Question 4

Chromatin consists of DNA and protein.

Accepted Answer

A) True 
 B)False

Question 5

The function of the nucleus is to

Accepted Answer

A) direct the activities of the cell. 
B) form mitochondria. 
C) transfer energy. 
D) provide cell shape. 
A) direct the activities of the cell. 
B) form mitochondria. 
C) transfer energy. 
D) provide cell shape.

Question 6

Chromosomes duplicate during

Accepted Answer

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

Question 7

A young man who ran 6 miles a day throughout high school is injured during his first season running cross country in college. He must rest for three months and then gradually begin exercising again. The skeletal muscles in his lower limbs decrease in size during this prolonged period of inactivity. The organelles that break down his muscle proteins are

Accepted Answer

A) peroxisomes. 
B) lysosomes. 
C) centrosomes. 
D) ribosomes. 
A) peroxisomes. 
B) lysosomes. 
C) centrosomes. 
D) ribosomes.

Question 8

An isotonic solution

Accepted Answer

A) has a greater concentration of impermeant solute than a cell. 
B) has more water entering than leaving a cell. 
C) has the same osmotic pressure as the cells in the solution. 
D) causes a cell to shrink. 
A) has a greater concentration of impermeant solute than a cell. 
B) has more water entering than leaving a cell. 
C) has the same osmotic pressure as the cells in the solution. 
D) causes a cell to shrink.

Question 9

Vesicles are formed from the

Accepted Answer

A) lysosomal membrane. 
B) nuclear membrane. 
C) cell membrane. 
D) mitochondrial membrane. 
A) lysosomal membrane. 
B) nuclear membrane. 
C) cell membrane. 
D) mitochondrial membrane.

Question 10

The major components of the cell membrane are

Accepted Answer

A) lipids and carbohydrates. 
B) proteins and carbohydrates. 
C) lipids and proteins. 
D) carbohydrates and polysaccharides. 
A) lipids and carbohydrates. 
B) proteins and carbohydrates. 
C) lipids and proteins. 
D) carbohydrates and polysaccharides.

Question 11

Osmosis is the movement of

Accepted Answer

A) molecules from a high concentration to a low concentration. 
B) water through a selectively permeable membrane to a solution containing a higher concentration of impermeant solute. 
C) water through a selectively permeable membrane to a solution containing a lower concentration of impermeant solute. 
D) ions from a low pressure region to a high pressure region through a selectively permeable membrane. 
A) molecules from a high concentration to a low concentration. 
B) water through a selectively permeable membrane to a solution containing a higher concentration of impermeant solute. 
C) water through a selectively permeable membrane to a solution containing a lower concentration of impermeant solute. 
D) ions from a low pressure region to a high pressure region through a selectively permeable membrane.

Question 12

Coffee grounds are mixed with water before being placed in a funnel filter. The large grounds remain in the filter, but the small particles pass through

Accepted Answer

A) from low concentration to high concentration. 
B) from low hydrostatic pressure to high hydrostatic pressure. 
C) by hydrostatic pressure that is greater on one side of the membrane than on the other. 
D) from low osmotic pressure to high osmotic pressure. 
A) from low concentration to high concentration. 
B) from low hydrostatic pressure to high hydrostatic pressure. 
C) by hydrostatic pressure that is greater on one side of the membrane than on the other. 
D) from low osmotic pressure to high osmotic pressure.

Question 13

Endoplasmic reticulum is best described as a

Accepted Answer

A) component of the cytoskeleton. 
B) cellular inclusion. 
C) nuclear pore. 
D) network of interconnected membranes. 
A) component of the cytoskeleton. 
B) cellular inclusion. 
C) nuclear pore. 
D) network of interconnected membranes.

Question 14

A temporary cell that is no longer useful for development undergoes preprogrammed cell death. During this process,

Accepted Answer

A) chromosomes join. 
B) the cytoskeleton forms large, complex structures. 
C) mitochondria merge. 
D) the cell can no longer adhere to other cells. 
A) chromosomes join. 
B) the cytoskeleton forms large, complex structures. 
C) mitochondria merge. 
D) the cell can no longer adhere to other cells.

Question 15

Which organelle contains the nucleolus?

Accepted Answer

A) The mitochondrion 
B) The endoplasmic reticulum 
C) The Golgi apparatus 
D) The nucleus 
A) The mitochondrion 
B) The endoplasmic reticulum 
C) The Golgi apparatus 
D) The nucleus

Question 16

During interphase, a cell rests.

Accepted Answer

A) True 
 B)False

Question 17

Researchers in a lab are working with a form of stem cells that can divide and give rise to any cell type, allowing them to research development. This cell type is known as

Accepted Answer

A) pluripotent. 
B) multipotent. 
C) totipotent. 
D) a differentiated cell. 
A) pluripotent. 
B) multipotent. 
C) totipotent. 
D) a differentiated cell.

Question 18

The cellular abnormality that causes cystic fibrosis is

Accepted Answer

A) absence of the ability to feel pain. 
B) abnormal chloride channels that trap salt inside cells lining the lung passageways. 
C) abnormal potassium channels in heart muscle. 
D) extra receptors for a growth factor. 
A) absence of the ability to feel pain. 
B) abnormal chloride channels that trap salt inside cells lining the lung passageways. 
C) abnormal potassium channels in heart muscle. 
D) extra receptors for a growth factor.

Question 19

During telophase of mitosis, chromosomes elongate and form chromatin threads.

Accepted Answer

A) True 
 B)False

Question 20

A nerve cell and a muscle cell have the same genes, but express different subsets of them.

Accepted Answer

A) True 
 B)False

Exam 3: Cells

The movement of molecules through a membrane by filtration requires

Some people cannot be infected with HIV because

Krabbe disease results from an abnormality that affects the ________ of nerve cells in the brain.

Chromatin consists of DNA and protein.

The function of the nucleus is to

Chromosomes duplicate during

An isotonic solution

Vesicles are formed from the

The major components of the cell membrane are

Osmosis is the movement of

Coffee grounds are mixed with water before being placed in a funnel filter. The large grounds remain in the filter, but the small particles pass through

Endoplasmic reticulum is best described as a

A temporary cell that is no longer useful for development undergoes preprogrammed cell death. During this process,

Which organelle contains the nucleolus?

During interphase, a cell rests.

Researchers in a lab are working with a form of stem cells that can divide and give rise to any cell type, allowing them to research development. This cell type is known as

The cellular abnormality that causes cystic fibrosis is

During telophase of mitosis, chromosomes elongate and form chromatin threads.

A nerve cell and a muscle cell have the same genes, but express different subsets of them.

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

Filters