Question 1

Ribosomes are not visible under a light microscope, but they can be seen with an electron microscope because

Accepted Answer

A)  electron beams have more energy than light beams. 
B)  electron microscopes focus light with magnets. 
C)  electron microscopes have more resolving power than light microscopes. 
D)  electrons have such high energy that they pass through biological samples. 
E)  living cells can be observed under the electron microscope. 
A)  electron beams have more energy than light beams. 
B)  electron microscopes focus light with magnets. 
C)  electron microscopes have more resolving power than light microscopes. 
D)  electrons have such high energy that they pass through biological samples. 
E)  living cells can be observed under the electron microscope.

Question 2

The overall shape of a cell is determined by its

Accepted Answer

A)  cell membrane. 
B)  cytoskeleton. 
C)  nucleus. 
D)  cytosol. 
E)  endoplasmic reticulum. 
A)  cell membrane. 
B)  cytoskeleton. 
C)  nucleus. 
D)  cytosol. 
E)  endoplasmic reticulum.

Question 3

Which of the following organelles is found only in plant cells?

Accepted Answer

A)  Cilium 
B)  Nucleus 
C)  Mitochondrion 
D)  Glyoxysome 
E)  Peroxisome 
A)  Cilium 
B)  Nucleus 
C)  Mitochondrion 
D)  Glyoxysome 
E)  Peroxisome

Question 4

A general function of all cellular membranes is to

Accepted Answer

A)  regulate which materials can cross the membrane. 
B)  support the cell and determine its shape. 
C)  produce energy for the cell. 
D)  produce proteins for the cell. 
E)  move the cell. 
A)  regulate which materials can cross the membrane. 
B)  support the cell and determine its shape. 
C)  produce energy for the cell. 
D)  produce proteins for the cell. 
E)  move the cell.

Question 5

A secondary lysosome is a lysosome that

Accepted Answer

A)  provides a backup to the primary lysosomes. 
B)  is smaller than a primary lysosome. 
C)  will become a primary lysosome when it fuses with a phagosome. 
D)  is a primary lysosome that has fused with a phagosome. 
E)  has exocytosed. 
A)  provides a backup to the primary lysosomes. 
B)  is smaller than a primary lysosome. 
C)  will become a primary lysosome when it fuses with a phagosome. 
D)  is a primary lysosome that has fused with a phagosome. 
E)  has exocytosed.

Question 6

Most plant and animal cells are

Accepted Answer

A)  smaller than a chloroplast. 
B)  smaller than most bacteria. 
C)  large enough to be seen with a light microscope. 
D)  smaller than small molecules. 
E)  large enough to be seen with the unaided eye. 
A)  smaller than a chloroplast. 
B)  smaller than most bacteria. 
C)  large enough to be seen with a light microscope. 
D)  smaller than small molecules. 
E)  large enough to be seen with the unaided eye.

Question 7

The DNA in a prokaryotic cell can be found in the _______ region.

Accepted Answer

The answer of The DNA in a prokaryotic cell can...

Question 8

If all the lysosomes within a cell suddenly ruptured, what would be the most likely result?

Accepted Answer

A)  The macromolecules in the cytosol would break down. 
B)  More proteins would be made. 
C)  The DNA within mitochondria would break down. 
D)  The mitochondria and chloroplasts would divide. 
E)  There would be no change in cell function. 
A)  The macromolecules in the cytosol would break down. 
B)  More proteins would be made. 
C)  The DNA within mitochondria would break down. 
D)  The mitochondria and chloroplasts would divide. 
E)  There would be no change in cell function.

Question 9

Which of the following organelles is involved in energy conversions?

Accepted Answer

A)  Lysosomes 
B)  Vacuoles 
C)  Chloroplasts 
D)  Peroxisomes 
E)  Nuclei 
A)  Lysosomes 
B)  Vacuoles 
C)  Chloroplasts 
D)  Peroxisomes 
E)  Nuclei

Question 10

Tough ropelike filaments that stabilize cell structure and resist tension are called _______ filaments.

Accepted Answer

The answer of Tough ropelike filaments that stabilize cell structure...

Question 11

Which of the following organelles is found at the base of every eukaryotic cilium and flagellum?

Accepted Answer

A)  Centriole 
B)  Basal body 
C)  Nucleolus 
D)  Flagellum 
E)  Microvillus 
A)  Centriole 
B)  Basal body 
C)  Nucleolus 
D)  Flagellum 
E)  Microvillus

Question 12

Which statement about mitochondria is not true?

Accepted Answer

A)  The inner mitochondrial membrane folds to form cristae. 
B)  The outer membrane is relatively permeable to macromolecules. 
C)  Mitochondria are green because they contain chlorophyll. 
D)  Fuel molecules from the cytosol are used for respiration in mitochondria. 
E)  ATP is synthesized in mitochondria. 
A)  The inner mitochondrial membrane folds to form cristae. 
B)  The outer membrane is relatively permeable to macromolecules. 
C)  Mitochondria are green because they contain chlorophyll. 
D)  Fuel molecules from the cytosol are used for respiration in mitochondria. 
E)  ATP is synthesized in mitochondria.

Question 13

Uniform concentrations of cytoplasmic materials in plants are maintained by

Accepted Answer

A)  motor proteins such as kinesin. 
B)  membrane-lined channels called plasmodesmata. 
C)  the semirigid cell wall. 
D)  constantly-beating cilia. 
E)  an internal cytoskeleton. 
A)  motor proteins such as kinesin. 
B)  membrane-lined channels called plasmodesmata. 
C)  the semirigid cell wall. 
D)  constantly-beating cilia. 
E)  an internal cytoskeleton.

Question 14

Plastids are

Accepted Answer

A)  present in all eukaryotes. 
B)  always green. 
C)  present in photosynthetic prokaryotes. 
D)  present in nearly all plant cells. 
E)  very similar to mitochondria. 
A)  present in all eukaryotes. 
B)  always green. 
C)  present in photosynthetic prokaryotes. 
D)  present in nearly all plant cells. 
E)  very similar to mitochondria.

Question 15

Which of the following statements about the nucleus in animal cells is false?

Accepted Answer

A)  The nucleus occupies the largest volume of the cell. 
B)  DNA replication takes place in the nucleus. 
C)  The nucleus is the site of protein synthesis. 
D)  DNA in the nucleus combines with proteins. 
E)  The nucleolus is located in the nucleus. 
A)  The nucleus occupies the largest volume of the cell. 
B)  DNA replication takes place in the nucleus. 
C)  The nucleus is the site of protein synthesis. 
D)  DNA in the nucleus combines with proteins. 
E)  The nucleolus is located in the nucleus.

Question 16

Membrane-bound compartments with distinctive shapes and functions are termed _______.

Accepted Answer

The answer of Membrane-bound compartments with distinctive shapes and functions...

Question 17

Which of the following organelles were probably once independent prokaryote organisms?

Accepted Answer

A)  Mitochondria and lysosomes 
B)  Mitochondria and chloroplasts 
C)  Chloroplasts and Golgi apparatus 
D)  Golgi apparatus and ribosomes 
E)  Ribosomes and lysosomes 
A)  Mitochondria and lysosomes 
B)  Mitochondria and chloroplasts 
C)  Chloroplasts and Golgi apparatus 
D)  Golgi apparatus and ribosomes 
E)  Ribosomes and lysosomes

Question 18

Which of the following is a function of a plant cell vacuole?

Accepted Answer

A)  Storage of toxic by-products and wastes 
B)  Support for the cell 
C)  Containment of animal-attracting pigments that aid in pollination 
D)  Hydrolysis of seed proteins into plant embryo food 
E)  All of the above 
A)  Storage of toxic by-products and wastes 
B)  Support for the cell 
C)  Containment of animal-attracting pigments that aid in pollination 
D)  Hydrolysis of seed proteins into plant embryo food 
E)  All of the above

Question 19

Microvilli are created by projections of

Accepted Answer

A)  microtubules. 
B)  actin. 
C)  myosin. 
D)  intermediate filaments. 
E)  None of the above 
A)  microtubules. 
B)  actin. 
C)  myosin. 
D)  intermediate filaments. 
E)  None of the above

Question 20

Of the following structures of an animal cell, the one with the largest volume is the

Accepted Answer

A)  cilium. 
B)  mitochondrion. 
C)  lysosome. 
D)  nucleus. 
E)  ribosome. 
A)  cilium. 
B)  mitochondrion. 
C)  lysosome. 
D)  nucleus. 
E)  ribosome.

Exam 5: Cells: the Working Units of Life

Ribosomes are not visible under a light microscope, but they can be seen with an electron microscope because

The overall shape of a cell is determined by its

Which of the following organelles is found only in plant cells?

A general function of all cellular membranes is to

A secondary lysosome is a lysosome that

Most plant and animal cells are

The DNA in a prokaryotic cell can be found in the _______ region.

If all the lysosomes within a cell suddenly ruptured, what would be the most likely result?

Which of the following organelles is involved in energy conversions?

Tough ropelike filaments that stabilize cell structure and resist tension are called _______ filaments.

Which of the following organelles is found at the base of every eukaryotic cilium and flagellum?

Which statement about mitochondria is not true?

Uniform concentrations of cytoplasmic materials in plants are maintained by

Plastids are

Which of the following statements about the nucleus in animal cells is false?

Membrane-bound compartments with distinctive shapes and functions are termed _______.

Which of the following organelles were probably once independent prokaryote organisms?

Which of the following is a function of a plant cell vacuole?

Microvilli are created by projections of

Of the following structures of an animal cell, the one with the largest volume is the

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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