Question 1

Which of the following is not a component of the endomembrane system?

Accepted Answer

A)  Rough endoplasmic reticulum 
B)  Smooth endoplasmic reticulum 
C)  Golgi apparatus 
D)  Lysosomes 
E)  Plastids 
A)  Rough endoplasmic reticulum 
B)  Smooth endoplasmic reticulum 
C)  Golgi apparatus 
D)  Lysosomes 
E)  Plastids

Question 2

Toxic peroxides that are formed unavoidably as side products of important cellular reactions are collected and neutralized in _______.

Accepted Answer

The answer of Toxic peroxides that are formed unavoidably as...

Question 3

There are structural similarities between mitochondria and chloroplasts. If we can assume that form follows function, what would be the explanation for the similarities between these two organelles?

Accepted Answer

Both mitochondria and chloroplasts are i

Question 4

The very large organelle shown below has genetic control of a cell's activities. What is the name of this structure?

Accepted Answer

A)  Mitochondrion 
B)  Endoplasmic reticulum 
C)  Nucleus 
D)  Vacuole 
E)  Golgi apparatus 
A)  Mitochondrion 
B)  Endoplasmic reticulum 
C)  Nucleus 
D)  Vacuole 
E)  Golgi apparatus

Question 5

Microtubules are made of

Accepted Answer

A)  actin, and they function in locomotion. 
B)  tubulin, and they are essential in chromosome distribution during mitosis. 
C)  tubulin, and they are found in microvilli. 
D)  actin, and they function to change cell shape. 
E)  polysaccharides, and they function in locomotion. 
A)  actin, and they function in locomotion. 
B)  tubulin, and they are essential in chromosome distribution during mitosis. 
C)  tubulin, and they are found in microvilli. 
D)  actin, and they function to change cell shape. 
E)  polysaccharides, and they function in locomotion.

Question 6

The DNA of prokaryotic cells is found in the

Accepted Answer

A)  plasma membrane. 
B)  nucleus. 
C)  ribosome. 
D)  nucleoid region. 
E)  mitochondria. 
A)  plasma membrane. 
B)  nucleus. 
C)  ribosome. 
D)  nucleoid region. 
E)  mitochondria.

Question 7

The cytoskeleton consists of

Accepted Answer

A)  cilia, flagella, and microfilaments. 
B)  cilia, microtubules, and microfilaments. 
C)  internal cell walls. 
D)  microtubules, intermediate filaments, and microfilaments. 
E)  calcified microtubules. 
A)  cilia, flagella, and microfilaments. 
B)  cilia, microtubules, and microfilaments. 
C)  internal cell walls. 
D)  microtubules, intermediate filaments, and microfilaments. 
E)  calcified microtubules.

Question 8

Some bacteria are able to propel themselves through liquid by means of a structure called the

Accepted Answer

A)  flagellum. 
B)  pilus. 
C)  cytoplasm. 
D)  cell wall. 
E)  peptidoglycan molecule. 
A)  flagellum. 
B)  pilus. 
C)  cytoplasm. 
D)  cell wall. 
E)  peptidoglycan molecule.

Question 9

A component of the nucleus that may be involved in the aging process is the

Accepted Answer

A)  nuclear lamina. 
B)  nuclear pore. 
C)  nuclear matrix. 
D)  nucleoplasm. 
E)  nuclear envelope. 
A)  nuclear lamina. 
B)  nuclear pore. 
C)  nuclear matrix. 
D)  nucleoplasm. 
E)  nuclear envelope.

Question 10

Cilia

Accepted Answer

A)  are shorter and more numerous than flagella. 
B)  are composed of microfilaments. 
C)  are composed of intermediate filaments. 
D)  propel ribosomes through the cytoplasm. 
E)  are needed for plasmodesmata to function. 
A)  are shorter and more numerous than flagella. 
B)  are composed of microfilaments. 
C)  are composed of intermediate filaments. 
D)  propel ribosomes through the cytoplasm. 
E)  are needed for plasmodesmata to function.

Question 11

Which of the following organelles were 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 12

The type of cell that always lacks a cell wall is the _______ cell.

Accepted Answer

A)  bacterial 
B)  plant 
C)  animal 
D)  fungal 
E)  prokaryotic 
A)  bacterial 
B)  plant 
C)  animal 
D)  fungal 
E)  prokaryotic

Question 13

What is the correct cellular function of the RER?

Accepted Answer

A)  DNA synthesis 
B)  Photosynthesis 
C)  Cellular respiration 
D)  Protein synthesis 
E)  mRNA degradation 
A)  DNA synthesis 
B)  Photosynthesis 
C)  Cellular respiration 
D)  Protein synthesis 
E)  mRNA degradation

Question 14

Which of the following statements best describes what happens to the organelles of the pepper fruit cells as the fruit turns from green to red?

Accepted Answer

A)  Leucoplasts become chloroplasts 
B)  Chloroplasts become leucoplasts 
C)  Chromoplasts become chloroplasts 
D)  Leucoplasts become chromoplasts 
E)  Chloroplasts become chromoplasts 
A)  Leucoplasts become chloroplasts 
B)  Chloroplasts become leucoplasts 
C)  Chromoplasts become chloroplasts 
D)  Leucoplasts become chromoplasts 
E)  Chloroplasts become chromoplasts

Question 15

How does the surface area-to-volume ratio of a 1-mm cube compare to the surface area-to-volume ratio of a 3-mm cube?

Accepted Answer

A)  The 3-mm cube has a higher ratio. 
B)  The ratio increases as the cube becomes larger. 
C)  Increasing the volume increases the ratio. 
D)  The ratio decreases as the cube becomes larger. 
E)  The ratio does not change. 
A)  The 3-mm cube has a higher ratio. 
B)  The ratio increases as the cube becomes larger. 
C)  Increasing the volume increases the ratio. 
D)  The ratio decreases as the cube becomes larger. 
E)  The ratio does not change.

Question 16

The _______ is an organelle that serves as a sort of "post office," where some of the proteins synthesized on ribosomes and the rough ER are processed and sent to their destinations.

Accepted Answer

The answer of The _______ is an organelle that serves...

Question 17

The light microscope has glass lenses that focus visible light for imaging, whereas the electron microscope has _______ that focus electrons for imaging.

Accepted Answer

The answer of The light microscope has glass lenses that...

Question 18

Which statement about the plant cell wall is not true?

Accepted Answer

A)  Its principal chemical components are polysaccharides. 
B)  It lies outside the plasma membrane. 
C)  It provides support for the cell. 
D)  It completely isolates adjacent cells from one another. 
E)  It is semirigid. 
A)  Its principal chemical components are polysaccharides. 
B)  It lies outside the plasma membrane. 
C)  It provides support for the cell. 
D)  It completely isolates adjacent cells from one another. 
E)  It is semirigid.

Question 19

Photosynthesis occurs in the

Accepted Answer

A)  chloroplast. 
B)  mitochondria. 
C)  Golgi apparatus. 
D)  nucleus. 
E)  RER. 
A)  chloroplast. 
B)  mitochondria. 
C)  Golgi apparatus. 
D)  nucleus. 
E)  RER.

Question 20

Chloroplasts are a kind of

Accepted Answer

A)  leucoplast. 
B)  endoplasmic reticulum. 
C)  chromoplast. 
D)  Golgi apparatus. 
E)  plastid. 
A)  leucoplast. 
B)  endoplasmic reticulum. 
C)  chromoplast. 
D)  Golgi apparatus. 
E)  plastid.

Exam 5: Cells: the Working Units of Life

Which of the following is not a component of the endomembrane system?

Toxic peroxides that are formed unavoidably as side products of important cellular reactions are collected and neutralized in _______.

There are structural similarities between mitochondria and chloroplasts. If we can assume that form follows function, what would be the explanation for the similarities between these two organelles?

The very large organelle shown below has genetic control of a cell's activities. What is the name of this structure?

Microtubules are made of

The DNA of prokaryotic cells is found in the

The cytoskeleton consists of

Some bacteria are able to propel themselves through liquid by means of a structure called the

A component of the nucleus that may be involved in the aging process is the

Cilia

Which of the following organelles were once independent prokaryote organisms?

The type of cell that always lacks a cell wall is the _______ cell.

What is the correct cellular function of the RER?

Which of the following statements best describes what happens to the organelles of the pepper fruit cells as the fruit turns from green to red?

How does the surface area-to-volume ratio of a 1-mm cube compare to the surface area-to-volume ratio of a 3-mm cube?

The _______ is an organelle that serves as a sort of "post office," where some of the proteins synthesized on ribosomes and the rough ER are processed and sent to their destinations.

The light microscope has glass lenses that focus visible light for imaging, whereas the electron microscope has _______ that focus electrons for imaging.

Which statement about the plant cell wall is not true?

Photosynthesis occurs in the

Chloroplasts are a kind of

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

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