Question 1

The cytoskeleton

Accepted Answer

A)  includes flagella. 
B)  is fully present in prokaryotes. 
C)  moves organelles within cells. 
D)  is composed of polymers of nucleotides. 
E)  surrounds cells like cell walls. 
A)  includes flagella. 
B)  is fully present in prokaryotes. 
C)  moves organelles within cells. 
D)  is composed of polymers of nucleotides. 
E)  surrounds cells like cell walls.

Question 2

_______ is the process by which light energy is converted into chemical bonds.

Accepted Answer

The answer of _______ is the process by which light...

Question 3

Which structure is not surrounded by one or more membranes?

Accepted Answer

A)  Ribosome 
B)  Chloroplast 
C)  Mitochondrion 
D)  Peroxisome 
E)  Vacuole 
A)  Ribosome 
B)  Chloroplast 
C)  Mitochondrion 
D)  Peroxisome 
E)  Vacuole

Question 4

Which of the following structures is (are) involved with maintaining the position of the organelles within a cell?

Accepted Answer

A)  Golgi apparatus 
B)  Endoplasmic reticulum 
C)  Mitochondria 
D)  Microfilaments 
E)  Intermediate filaments 
A)  Golgi apparatus 
B)  Endoplasmic reticulum 
C)  Mitochondria 
D)  Microfilaments 
E)  Intermediate filaments

Question 5

One difference between plant and animal cells is that

Accepted Answer

A)  only animal cells have mitochondria. 
B)  only animal cells contain centrioles. 
C)  plant cells have a cell wall, whereas animal cells have a plasma membrane. 
D)  plant cells lack a cytoskeleton. 
E)  only plant cells have peroxisomes. 
A)  only animal cells have mitochondria. 
B)  only animal cells contain centrioles. 
C)  plant cells have a cell wall, whereas animal cells have a plasma membrane. 
D)  plant cells lack a cytoskeleton. 
E)  only plant cells have peroxisomes.

Question 6

A prokaryotic cell does not have a _______ or _______.

Accepted Answer

A)  nucleus; membrane-bound organelles 
B)  nucleus; DNA 
C)  nucleus; ribosomes 
D)  nucleus; membranes 
E)  cell wall; membranes 
A)  nucleus; membrane-bound organelles 
B)  nucleus; DNA 
C)  nucleus; ribosomes 
D)  nucleus; membranes 
E)  cell wall; membranes

Question 7

Lysosomes are involved in

Accepted Answer

A)  DNA synthesis. 
B)  the breakdown of phagocytized material. 
C)  protein folding. 
D)  pigment production. 
E)  cell membrane production. 
A)  DNA synthesis. 
B)  the breakdown of phagocytized material. 
C)  protein folding. 
D)  pigment production. 
E)  cell membrane production.

Question 8

Centrifugation of a cell results in the rupture of the cell membrane and the compacting of the contents into a pellet in the bottom of the centrifuge tube. Bathing this pellet with a glucose solution yields metabolic activity, including the production of ATP. One of the contents of this pellet is most likely which of the following?

Accepted Answer

A)  Cytosol 
B)  Mitochondria 
C)  Lysosomes 
D)  Golgi bodies 
E)  Thylakoids 
A)  Cytosol 
B)  Mitochondria 
C)  Lysosomes 
D)  Golgi bodies 
E)  Thylakoids

Question 9

Cilia and eukaryotic flagella

Accepted Answer

A)  propel cells by rotation of the structures. 
B)  contain microfilaments. 
C)  contain microtubules that are sufficient to drive movement. 
D)  must have a motor protein that uses the energy of ATP hydrolysis to power movement. 
E)  contain centrioles. 
A)  propel cells by rotation of the structures. 
B)  contain microfilaments. 
C)  contain microtubules that are sufficient to drive movement. 
D)  must have a motor protein that uses the energy of ATP hydrolysis to power movement. 
E)  contain centrioles.

Question 10

Which statement about plastids is true?

Accepted Answer

A)  They are found in prokaryotes. 
B)  They are surrounded by a single membrane. 
C)  They are the sites of cellular respiration. 
D)  They are found only in fungi. 
E)  They may contain several types of pigments or polysaccharides. 
A)  They are found in prokaryotes. 
B)  They are surrounded by a single membrane. 
C)  They are the sites of cellular respiration. 
D)  They are found only in fungi. 
E)  They may contain several types of pigments or polysaccharides.

Question 11

Which of the following statements about mitochondria and chloroplasts is true?

Accepted Answer

A)  Animal cells produce chloroplasts. 
B)  Both mitochondria and chloroplasts may be found in the same cell. 
C)  Mitochondria and chloroplasts are not found in the same cell. 
D)  In certain conditions, chloroplasts can revert to mitochondria. 
E)  None of the above 
A)  Animal cells produce chloroplasts. 
B)  Both mitochondria and chloroplasts may be found in the same cell. 
C)  Mitochondria and chloroplasts are not found in the same cell. 
D)  In certain conditions, chloroplasts can revert to mitochondria. 
E)  None of the above

Question 12

Chloroplasts are the structures in which

Accepted Answer

A)  chemical energy is stored in the form of ATP. 
B)  cell division is controlled. 
C)  genetic information is used to make proteins. 
D)  sunlight energy is converted into chemical energy. 
E)  new organelles are made. 
A)  chemical energy is stored in the form of ATP. 
B)  cell division is controlled. 
C)  genetic information is used to make proteins. 
D)  sunlight energy is converted into chemical energy. 
E)  new organelles are made.

Question 13

Which type of organelle is found in plants but not in animals?

Accepted Answer

A)  Ribosomes 
B)  Mitochondria 
C)  Nuclei 
D)  Plastids 
E)  None of the above 
A)  Ribosomes 
B)  Mitochondria 
C)  Nuclei 
D)  Plastids 
E)  None of the above

Question 14

The shape of the nucleus is maintained by a protein meshwork called the _______.

Accepted Answer

The answer of The shape of the nucleus is maintained...

Question 15

You would not expect to find RNA in which of the following structures?

Accepted Answer

A)  Nucleus 
B)  Mitochondrion 
C)  Vacuole 
D)  Ribosome 
E)  Prokaryotic cell 
A)  Nucleus 
B)  Mitochondrion 
C)  Vacuole 
D)  Ribosome 
E)  Prokaryotic cell

Question 16

The function of the nuclear pores is to

Accepted Answer

A)  synthesize and repair DNA, the unit of genetic information. 
B)  assemble ribosomes from raw materials that are synthesized in the nucleus. 
C)  communicate with components of the endomembrane system. 
D)  regulate movement of materials across the nuclear membrane. 
E)  support the nuclear envelope. 
A)  synthesize and repair DNA, the unit of genetic information. 
B)  assemble ribosomes from raw materials that are synthesized in the nucleus. 
C)  communicate with components of the endomembrane system. 
D)  regulate movement of materials across the nuclear membrane. 
E)  support the nuclear envelope.

Question 17

What must cells do in order to survive?

Accepted Answer

A)  Obtain and process energy 
B)  Convert genetic information into proteins 
C)  Keep certain biochemical reactions separate from one another 
D)  Both a and b 
E)  All of the above 
A)  Obtain and process energy 
B)  Convert genetic information into proteins 
C)  Keep certain biochemical reactions separate from one another 
D)  Both a and b 
E)  All of the above

Question 18

Which of the following statements about the nuclear envelope is true?

Accepted Answer

A)  It contains pores for the passage of large molecules. 
B)  It is composed of two membranes. 
C)  It contains ribosomes on the inner surface. 
D)  Both a and b 
E)  All of the above 
A)  It contains pores for the passage of large molecules. 
B)  It is composed of two membranes. 
C)  It contains ribosomes on the inner surface. 
D)  Both a and b 
E)  All of the above

Question 19

The DNA of mitochondria

Accepted Answer

A)  is needed to hydrolyze monomers. 
B)  is used to make proteins needed for cellular respiration. 
C)  directs photosynthesis. 
D)  controls the cell's activities. 
E)  synthesizes polysaccharides for the plant cell wall. 
A)  is needed to hydrolyze monomers. 
B)  is used to make proteins needed for cellular respiration. 
C)  directs photosynthesis. 
D)  controls the cell's activities. 
E)  synthesizes polysaccharides for the plant cell wall.

Question 20

Which structure is generally present in both prokaryotic cells and eukaryotic plant cells?

Accepted Answer

A)  Chloroplasts 
B)  Cell wall 
C)  Nucleus 
D)  Mitochondria 
E)  Microtubules 
A)  Chloroplasts 
B)  Cell wall 
C)  Nucleus 
D)  Mitochondria 
E)  Microtubules

Exam 5: Cells: the Working Units of Life

The cytoskeleton

_______ is the process by which light energy is converted into chemical bonds.

Which structure is not surrounded by one or more membranes?

Which of the following structures is (are) involved with maintaining the position of the organelles within a cell?

One difference between plant and animal cells is that

A prokaryotic cell does not have a _______ or _______.

Lysosomes are involved in

Cilia and eukaryotic flagella

Which statement about plastids is true?

Which of the following statements about mitochondria and chloroplasts is true?

Chloroplasts are the structures in which

Which type of organelle is found in plants but not in animals?

The shape of the nucleus is maintained by a protein meshwork called the _______.

You would not expect to find RNA in which of the following structures?

The function of the nuclear pores is to

What must cells do in order to survive?

Which of the following statements about the nuclear envelope is true?

The DNA of mitochondria

Which structure is generally present in both prokaryotic cells and eukaryotic plant cells?

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

Filters

A prokaryotic cell does not have a _ or _.