Question 1

Ribosomes are made up of

Accepted Answer

A)  DNA and RNA. 
B)  DNA and proteins. 
C)  RNA and proteins. 
D)  proteins. 
E)  DNA. 
A)  DNA and RNA. 
B)  DNA and proteins. 
C)  RNA and proteins. 
D)  proteins. 
E)  DNA.

Question 2

_______ are involved in cytoplasmic streaming, in the "pinching" of a cell that ultimately divides an animal cell into two daughter cells, and in the formation of pseudopodia.

Accepted Answer

The answer of _______ are involved in cytoplasmic streaming, in...

Question 3

The surface area-to-volume ratio of a cell

Accepted Answer

A)  can be increased by increasing the volume of the cell. 
B)  can be decreased by decreasing the surface area. 
C)  explains why cells are small. 
D)  is of little significance to maintaining cell homeostasis. 
E)  None of the above 
A)  can be increased by increasing the volume of the cell. 
B)  can be decreased by decreasing the surface area. 
C)  explains why cells are small. 
D)  is of little significance to maintaining cell homeostasis. 
E)  None of the above

Question 4

What is the difference between "free" and "attached" ribosomes?

Accepted Answer

A)  Free ribosomes are in the cytoplasm, whereas attached ribosomes are anchored to the endoplasmic reticulum. 
B)  Free ribosomes produce proteins in the cytosol, whereas attached ribosomes produce proteins that are inserted into the ER. 
C)  Free ribosomes produce proteins that are exported from the cell, whereas attached ribosomes make proteins for mitochondria and chloroplasts. 
D)  Both a and b 
E)  Both a and c 
A)  Free ribosomes are in the cytoplasm, whereas attached ribosomes are anchored to the endoplasmic reticulum. 
B)  Free ribosomes produce proteins in the cytosol, whereas attached ribosomes produce proteins that are inserted into the ER. 
C)  Free ribosomes produce proteins that are exported from the cell, whereas attached ribosomes make proteins for mitochondria and chloroplasts. 
D)  Both a and b 
E)  Both a and c

Question 5

Lysosomes

Accepted Answer

A)  are derived from the endoplasmic reticulum. 
B)  are derived from the Golgi apparatus. 
C)  contain enzymes that synthesize proteins. 
D)  have a higher internal pH than the cytoplasm. 
E)  are derived from the plasma membrane. 
A)  are derived from the endoplasmic reticulum. 
B)  are derived from the Golgi apparatus. 
C)  contain enzymes that synthesize proteins. 
D)  have a higher internal pH than the cytoplasm. 
E)  are derived from the plasma membrane.

Question 6

The side of the Golgi facing the ER is the _______ face.

Accepted Answer

The answer of The side of the Golgi facing the...

Question 7

Explain the significance of organelles. What are the costs and benefits of having large compartmentalized cells?

Accepted Answer

Organelles allow different metabolic env

Question 8

Ribosomes are not found in

Accepted Answer

A)  mitochondria. 
B)  chloroplasts. 
C)  the rough endoplasmic reticulum. 
D)  prokaryotic cells. 
E)  the Golgi apparatus. 
A)  mitochondria. 
B)  chloroplasts. 
C)  the rough endoplasmic reticulum. 
D)  prokaryotic cells. 
E)  the Golgi apparatus.

Question 9

Which of the following is not a function of vacuoles?

Accepted Answer

A)  Contributing to plant survival 
B)  Helping plants maintain turgor pressure 
C)  Containing pigments that aid in pollination 
D)  Aiding in plant embryo development 
E)  Helping to anchor the cell in place 
A)  Contributing to plant survival 
B)  Helping plants maintain turgor pressure 
C)  Containing pigments that aid in pollination 
D)  Aiding in plant embryo development 
E)  Helping to anchor the cell in place

Question 10

The cytosol

Accepted Answer

A)  is a static region of the cell. 
B)  contains DNA. 
C)  is composed largely of water. 
D)  supports the cell and determines its shape. 
E)  chemically modifies proteins and other molecules. 
A)  is a static region of the cell. 
B)  contains DNA. 
C)  is composed largely of water. 
D)  supports the cell and determines its shape. 
E)  chemically modifies proteins and other molecules.

Question 11

In some prokaryotic organisms, the plasma membrane folds to form an internal membrane system that is able to

Accepted Answer

A)  carry on photosynthesis. 
B)  engulf and phagocytize bacteria. 
C)  synthesize proteins. 
D)  propel the cell. 
E)  hydrolyze carbohydrates to ATP. 
A)  carry on photosynthesis. 
B)  engulf and phagocytize bacteria. 
C)  synthesize proteins. 
D)  propel the cell. 
E)  hydrolyze carbohydrates to ATP.

Question 12

Which of the following is not an argument for the endosymbiotic theory?

Accepted Answer

A)  Mitochondria and chloroplasts are about the same size as prokaryotic cells. 
B)  Mitochondria and chloroplasts cannot be grown in culture, free of a host cell. 
C)  Mitochondria and chloroplasts have DNA and ribosomes. 
D)  Mitochondrial ribosomes synthesize proteins similar to those synthesized by bacterial ribosomes. 
E)  All of the above are arguments for the endosymbiotic theory. 
A)  Mitochondria and chloroplasts are about the same size as prokaryotic cells. 
B)  Mitochondria and chloroplasts cannot be grown in culture, free of a host cell. 
C)  Mitochondria and chloroplasts have DNA and ribosomes. 
D)  Mitochondrial ribosomes synthesize proteins similar to those synthesized by bacterial ribosomes. 
E)  All of the above are arguments for the endosymbiotic theory.

Question 13

The surface area-to-volume ratio of an object can be decreased by

Accepted Answer

A)  cutting it into smaller pieces. 
B)  flattening it. 
C)  stretching it. 
D)  making it spherical. 
E)  All of the above 
A)  cutting it into smaller pieces. 
B)  flattening it. 
C)  stretching it. 
D)  making it spherical. 
E)  All of the above

Exam 5: Cells: the Working Units of Life

Ribosomes are made up of

_______ are involved in cytoplasmic streaming, in the "pinching" of a cell that ultimately divides an animal cell into two daughter cells, and in the formation of pseudopodia.

The surface area-to-volume ratio of a cell

What is the difference between "free" and "attached" ribosomes?

Lysosomes

The side of the Golgi facing the ER is the _______ face.

Explain the significance of organelles. What are the costs and benefits of having large compartmentalized cells?

Ribosomes are not found in

Which of the following is not a function of vacuoles?

The cytosol

In some prokaryotic organisms, the plasma membrane folds to form an internal membrane system that is able to

Which of the following is not an argument for the endosymbiotic theory?

The surface area-to-volume ratio of an object can be decreased by

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

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