Question 1

Since plant cells do not have centrioles,they are not required for all organisms to conduct mitosis and meiosis.

Accepted Answer

A) True 
 B)False

Question 2

Which organelle has 13 rows of tubulin dimers around an empty central core?

Accepted Answer

A) flagella 
B) microtubules 
C) actin filaments 
D) intermediate filaments 
E) cilia 
A) flagella 
B) microtubules 
C) actin filaments 
D) intermediate filaments 
E) cilia

Question 3

Which of these is mismatched?

Accepted Answer

A) cilia-microtubules 
B) centrioles-spindle 
C) mitochondria-stroma 
D) lysosomes-hydrolytic enzymes 
E) ribosomes-RNA 
A) cilia-microtubules 
B) centrioles-spindle 
C) mitochondria-stroma 
D) lysosomes-hydrolytic enzymes 
E) ribosomes-RNA

Question 4

Compared with a eukaryotic cell,a prokaryotic cell

Accepted Answer

A) lacks organelles beyond ribosomes. 
B) is larger. 
C) does not require energy. 
D) is not living. 
E) has no method of movement. 
A) lacks organelles beyond ribosomes. 
B) is larger. 
C) does not require energy. 
D) is not living. 
E) has no method of movement.

Question 5

Which of the following would not be a function of the peroxisomes?

Accepted Answer

A) break down fats in the liver 
B) produce bile salts in the liver 
C) help germinating seeds convert fatty acids into molecules that can be converted to sugars 
D) store toxic materials in the cell 
E) metabolism that uses oxygen and releases carbon dioxide in leaves 
A) break down fats in the liver 
B) produce bile salts in the liver 
C) help germinating seeds convert fatty acids into molecules that can be converted to sugars 
D) store toxic materials in the cell 
E) metabolism that uses oxygen and releases carbon dioxide in leaves

Question 6

What evidence would not suggest that the fluid in the nucleus is different from the cytoplasm?

Accepted Answer

A) There is a pH difference between the two fluids. 
B) The nuclear membrane encloses the nucleoplasm. 
C) Nuclear pores only permit passage of certain molecules into and out of the nucleus. 
D) Cytoplasm and nucleoplasm both flow freely into and out of the nucleus. 
E) Electron microscopy reveals nonmembranous components associated with the nuclear pores. 
A) There is a pH difference between the two fluids. 
B) The nuclear membrane encloses the nucleoplasm. 
C) Nuclear pores only permit passage of certain molecules into and out of the nucleus. 
D) Cytoplasm and nucleoplasm both flow freely into and out of the nucleus. 
E) Electron microscopy reveals nonmembranous components associated with the nuclear pores.

Question 7

Mitochondria are bounded by a double membrane.The inner-filled space is called the matrix,which contains ______________ that break down carbohydrate products,releasing _______________ to be used for ATP production.

Accepted Answer

A) DNA/energy 
B) ribosomes/carbon dioxide 
C) RNA/energy 
D) enzymes/energy 
A) DNA/energy 
B) ribosomes/carbon dioxide 
C) RNA/energy 
D) enzymes/energy

Question 8

The ____ will store pigments and toxins in plant cells.

Accepted Answer

A) chloroplast 
B) lysosomes 
C) peroxisomes 
D) vacuole 
E) mitochondria 
A) chloroplast 
B) lysosomes 
C) peroxisomes 
D) vacuole 
E) mitochondria

Question 9

Which of the following is a prokaryotic cell?

Accepted Answer

A) plant cell 
B) liver cell 
C) muscle cell 
D) paramecium 
E) bacterium 
A) plant cell 
B) liver cell 
C) muscle cell 
D) paramecium 
E) bacterium

Question 10

Since all organisms carry on cellular respiration,all living cells must contain mitochondria.

Accepted Answer

A) True 
 B)False

Question 11

According to the endosymbiotic theory,eukaryotes became the mitochondria and chloroplasts found in prokaryotic cells.

Accepted Answer

A) True 
 B)False

Question 12

Circulating red blood cells in your body do not contain a nucleus and other organelles.Are these cells living?

Accepted Answer

A) Yes,because they are actively metabolizing and once contained organelles. 
B) Yes,because they are capable of moving throughout the body in the circulation. 
C) No,because they do not contain a nucleus,they cannot be living. 
D) No,because red blood cells do not actively metabolize. 
E) No,because they are now only part of a once living cell. 
A) Yes,because they are actively metabolizing and once contained organelles. 
B) Yes,because they are capable of moving throughout the body in the circulation. 
C) No,because they do not contain a nucleus,they cannot be living. 
D) No,because red blood cells do not actively metabolize. 
E) No,because they are now only part of a once living cell.

Question 13

The motor molecules associated with actin filaments are called

Accepted Answer

A) centrosomes. 
B) centrioles. 
C) dynein. 
D) myosin. 
E) kinesin. 
A) centrosomes. 
B) centrioles. 
C) dynein. 
D) myosin. 
E) kinesin.

Question 14

Surface-area-to-volume ratios indicate

Accepted Answer

A) cells must exceed a certain minimum size. 
B) as cells get larger,their surface area actually decreases. 
C) that the largest cells have a less proportionate need for food intake and waste removal. 
D) a chicken egg is one cell thus demonstrating the upper limit for metabolizing cell size. 
E) as cells get larger,their surface area gets larger but at a slower rate than the volume increases. 
A) cells must exceed a certain minimum size. 
B) as cells get larger,their surface area actually decreases. 
C) that the largest cells have a less proportionate need for food intake and waste removal. 
D) a chicken egg is one cell thus demonstrating the upper limit for metabolizing cell size. 
E) as cells get larger,their surface area gets larger but at a slower rate than the volume increases.

Question 15

Which type of cells will have modifications that increase the surface-area-to-volume ratio?

Accepted Answer

A) cells that specialize in absorption 
B) cells that specialize in gas exchange 
C) cells that secrete proteins 
D) cells that secrete lipids 
E) cells that form a waterproof barrier 
A) cells that specialize in absorption 
B) cells that specialize in gas exchange 
C) cells that secrete proteins 
D) cells that secrete lipids 
E) cells that form a waterproof barrier

Question 16

Ribosomes are composed of

Accepted Answer

A) DNA and RNA. 
B) DNA and protein. 
C) only protein. 
D) RNA and protein. 
E) only DNA. 
A) DNA and RNA. 
B) DNA and protein. 
C) only protein. 
D) RNA and protein. 
E) only DNA.

Question 17

Which of the following cells were most likely the first type of cells on Earth?

Accepted Answer

A) bacteria 
B) fungi 
C) archaea 
D) plants 
E) animals 
A) bacteria 
B) fungi 
C) archaea 
D) plants 
E) animals

Question 18

Explain how the nuclear envelope of eukaryotic cells could have arisen.

Accepted Answer

The cell membrane of a prokaryotic cell

Question 19

Which of the following events would increase the cell's ability to exchange materials across the membrane?

Accepted Answer

A) multiple cellular divisions that restore the amount of surface area 
B) the growth of microvilli on the cell membrane 
C) specialization in absorption 
D) All of the answer choices would increase the cell's ability to exchange materials across the membrane. 
E) None of the answer choices would increase the cell's ability to exchange materials across the membrane. 
A) multiple cellular divisions that restore the amount of surface area 
B) the growth of microvilli on the cell membrane 
C) specialization in absorption 
D) All of the answer choices would increase the cell's ability to exchange materials across the membrane. 
E) None of the answer choices would increase the cell's ability to exchange materials across the membrane.

Question 20

Which is NOT a function of the cytoskeleton?

Accepted Answer

A) maintains a cell's shape 
B) anchors organelles in place within a cell 
C) allows cell and its organelles to move 
D) secretes the calcium for bone tissue 
E) allows the formation of pseudopodia 
A) maintains a cell's shape 
B) anchors organelles in place within a cell 
C) allows cell and its organelles to move 
D) secretes the calcium for bone tissue 
E) allows the formation of pseudopodia

Exam 3: Cell Structure and Function

Since plant cells do not have centrioles,they are not required for all organisms to conduct mitosis and meiosis.

Which organelle has 13 rows of tubulin dimers around an empty central core?

Which of these is mismatched?

Compared with a eukaryotic cell,a prokaryotic cell

Which of the following would not be a function of the peroxisomes?

What evidence would not suggest that the fluid in the nucleus is different from the cytoplasm?

Mitochondria are bounded by a double membrane.The inner-filled space is called the matrix,which contains ______________ that break down carbohydrate products,releasing _______________ to be used for ATP production.

The ____ will store pigments and toxins in plant cells.

Which of the following is a prokaryotic cell?

Since all organisms carry on cellular respiration,all living cells must contain mitochondria.

According to the endosymbiotic theory,eukaryotes became the mitochondria and chloroplasts found in prokaryotic cells.

Circulating red blood cells in your body do not contain a nucleus and other organelles.Are these cells living?

The motor molecules associated with actin filaments are called

Surface-area-to-volume ratios indicate

Which type of cells will have modifications that increase the surface-area-to-volume ratio?

Ribosomes are composed of

Which of the following cells were most likely the first type of cells on Earth?

Explain how the nuclear envelope of eukaryotic cells could have arisen.

Which of the following events would increase the cell's ability to exchange materials across the membrane?

Which is NOT a function of the cytoskeleton?

The Study of Life

The Molecules of Cells

Membrane Structure and Function

Cell Division

Metabolism: Energy and Enzymes

Cellular Respiration

Photosynthesis

Plant Organization and Function

Plant Reproduction and Responses

Human Organization

Cardiovascular System

Lymphatic and Immune Systems

Digestive System and Nutrition

Respiratory System

Urinary System and Excretion

Nervous System

Senses

Musculoskeletal System

Endocrine System

Reproductive System

Development and Aging

Patterns of Gene Inheritance

Chromosomal Inheritance and Genetic Disorders

Dna Structure and Control of Gene Expression

Biotechnology and Genomics

Evolution of Life

Viruses, bacteria, and Archaea

Protistans

Plants

Animals: Part I

Animals Part II

Animal Behavior

Population Ecology

Nature of Ecosystems

The Biosphere

Environmental Concerns

Filters

Mitochondria are bounded by a double membrane.The inner-filled space is called the matrix,which contains that break down carbohydrate products,releasing _ to be used for ATP production.