Question 1

The cytoskeleton and motor proteins are important for which of the following processes?

Accepted Answer

A)  cell motility 
B)  whipping motion of sperm flagella 
C)  movement of amoeba by lamellopodia 
D)  muscle contraction 
E)  All of the choices are correct. 
A)  cell motility 
B)  whipping motion of sperm flagella 
C)  movement of amoeba by lamellopodia 
D)  muscle contraction 
E)  All of the choices are correct. E

Question 2

Which of the following is INCORRECT about ribosome biosynthesis and structure?

Accepted Answer

A)  Ribosomes are composed of two subunits. 
B)  Ribosomes are composed of RNA. 
C)  All components of the ribosome are produced in the cytosol. 
D)  Ribosomal proteins are produced in the cytosol. 
E)  Ribosomes are composed of proteins. 
A)  Ribosomes are composed of two subunits. 
B)  Ribosomes are composed of RNA. 
C)  All components of the ribosome are produced in the cytosol. 
D)  Ribosomal proteins are produced in the cytosol. 
E)  Ribosomes are composed of proteins. C

Question 3

Which of the following statements about peroxisomes is INCORRECT?

Accepted Answer

A)  They were once viewed as semiautonomous. 
B)  They assist in detoxifying molecules. 
C)  They possess a single membrane. 
D)  They possess their own DNA. 
E)  They possess an enzyme that prevents accumulation of hydrogen peroxide and free radicals. 
A)  They were once viewed as semiautonomous. 
B)  They assist in detoxifying molecules. 
C)  They possess a single membrane. 
D)  They possess their own DNA. 
E)  They possess an enzyme that prevents accumulation of hydrogen peroxide and free radicals. D

Question 4

The nucleus is to eukaryotes as the ________ is to prokaryotes.

Accepted Answer

A)  pili 
B)  glycocalyx 
C)  ribosome 
D)  nucleoid 
E)  cell wall 
A)  pili 
B)  glycocalyx 
C)  ribosome 
D)  nucleoid 
E)  cell wall

Question 5

The first step in cotranslational sorting is the peptide is directed to the endoplasmic reticulum.

Accepted Answer

A) True 
 B)False

Question 6

Prokaryotes

Accepted Answer

A)  lack a true nucleus. 
B)  lack true DNA. 
C)  use the cell membrane rather than ribosomes for making proteins. 
D)  contain numerous organelles. 
E)  are relatively benign cells incapable of harming organisms. 
A)  lack a true nucleus. 
B)  lack true DNA. 
C)  use the cell membrane rather than ribosomes for making proteins. 
D)  contain numerous organelles. 
E)  are relatively benign cells incapable of harming organisms.

Question 7

Which cytoskeletal structures represent a highly diverse group of tension-bearing fibers important to the maintenance of cell shape?

Accepted Answer

A)  microtubules 
B)  intermediate filaments 
C)  microfilaments 
D)  centrioles 
E)  pili 
A)  microtubules 
B)  intermediate filaments 
C)  microfilaments 
D)  centrioles 
E)  pili

Question 8

Which two cell scientists are credited with the formulation of the cell theory, also known as the cell doctrine?

Accepted Answer

A)  Watson and Crick 
B)  Schleiden and Schwann 
C)  Schleiden and Hooke 
D)  Schwann and Jenner 
A)  Watson and Crick 
B)  Schleiden and Schwann 
C)  Schleiden and Hooke 
D)  Schwann and Jenner

Question 9

In animal cells microtubules grow from which structure?

Accepted Answer

A)  origination centers in the plasma membrane 
B)  outer membrane of the nuclear envelope 
C)  centrosomes containing centrioles 
D)  dimerization centers located throughout the cytosol 
E)  the tips of the chromosomes 
A)  origination centers in the plasma membrane 
B)  outer membrane of the nuclear envelope 
C)  centrosomes containing centrioles 
D)  dimerization centers located throughout the cytosol 
E)  the tips of the chromosomes

Question 10

Which of the following organelles can grow and divide to reproduce themselves?

Accepted Answer

A)  mitochondria only 
B)  chloroplasts only 
C)  peroxisomes only 
D)  both mitochondria and chloroplasts 
E)  Mithochondria, chloroplasts, and lysosomes can reproduce themselves. 
A)  mitochondria only 
B)  chloroplasts only 
C)  peroxisomes only 
D)  both mitochondria and chloroplasts 
E)  Mithochondria, chloroplasts, and lysosomes can reproduce themselves.

Question 11

This cytoskeletal structure is composed of actin and regulates cell shape, cell movement, and muscle contraction.

Accepted Answer

A)  microfilaments 
B)  intermediate filaments 
C)  microtubules 
D)  both microfilaments and intermediate filaments 
E)  both microfilaments and microtubules 
A)  microfilaments 
B)  intermediate filaments 
C)  microtubules 
D)  both microfilaments and intermediate filaments 
E)  both microfilaments and microtubules

Question 12

The flagellum is used for cell motility in eukaryotes only.

Accepted Answer

A) True 
 B)False

Question 13

This is a tool that enables researchers to study the structure and function of cells.

Accepted Answer

A)  magnifying glass 
B)  microscope 
C)  tunneling assay 
D)  digital recording 
E)  differential centrifugation 
A)  magnifying glass 
B)  microscope 
C)  tunneling assay 
D)  digital recording 
E)  differential centrifugation

Question 14

Which of the following is NOT true for cilia or flagella?

Accepted Answer

A)  They are involved in cell motility. 
B)  They require ATP to work. 
C)  They are composed of microfilaments. 
D)  They require motor proteins to work. 
E)  They are composed of an internal structure called the axoneme. 
A)  They are involved in cell motility. 
B)  They require ATP to work. 
C)  They are composed of microfilaments. 
D)  They require motor proteins to work. 
E)  They are composed of an internal structure called the axoneme.

Question 15

Which one of the following pairs is mismatched?

Accepted Answer

A)  lysosome-protein synthesis 
B)  cytoskeleton-microfilaments 
C)  nucleus-DNA replication 
D)  cell membrane-lipid bilayer 
E)  Golgi apparatus-modification, processing, and sorting of macromolecules 
A)  lysosome-protein synthesis 
B)  cytoskeleton-microfilaments 
C)  nucleus-DNA replication 
D)  cell membrane-lipid bilayer 
E)  Golgi apparatus-modification, processing, and sorting of macromolecules

Question 16

Which of the following plant organelle is a colorless plastid that stores starch in roots?

Accepted Answer

A)  thyloplasts 
B)  chloroplasts 
C)  chromoplasts 
D)  amyloplasts 
E)  both chloroplasts and chromoplasts 
A)  thyloplasts 
B)  chloroplasts 
C)  chromoplasts 
D)  amyloplasts 
E)  both chloroplasts and chromoplasts

Question 17

Lysosomes digest intracellular debris, such as organelles, through the process of __________.

Accepted Answer

A)  endocytosis 
B)  phagocytosis 
C)  autophagy 
D)  pinocytosis 
E)  excocytosis 
A)  endocytosis 
B)  phagocytosis 
C)  autophagy 
D)  pinocytosis 
E)  excocytosis

Question 18

Which would be the most accurate endomembrane route through which a protein is secreted from a cell?

Accepted Answer

A)  Golgi apparatus?lysosome?vesicles?plasma membrane 
B)  plasmid?plasma membrane?nuclear envelope?smooth endoplasmic reticulum 
C)  nuclear envelope?vesicles?Golgi apparatus?plasma membrane 
D)  rough endoplasmic reticulum?lysosomes?vesicles?cell membrane 
E)  rough endoplasmic reticulum? Golgi apparatus?vesicles ?plasma membrane 
A)  Golgi apparatus?lysosome?vesicles?plasma membrane 
B)  plasmid?plasma membrane?nuclear envelope?smooth endoplasmic reticulum 
C)  nuclear envelope?vesicles?Golgi apparatus?plasma membrane 
D)  rough endoplasmic reticulum?lysosomes?vesicles?cell membrane 
E)  rough endoplasmic reticulum? Golgi apparatus?vesicles ?plasma membrane

Question 19

Plasma membranes are a feature of

Accepted Answer

A)  all cells. 
B)  prokaryotic cells only. 
C)  eukaryotic cells only. 
D)  plant cells only. 
E)  animal cells only. 
A)  all cells. 
B)  prokaryotic cells only. 
C)  eukaryotic cells only. 
D)  plant cells only. 
E)  animal cells only.

Question 20

Which of the following are principles of the cell theory or cell doctrine?

Accepted Answer

A)  All living things are composed of one or more cells. 
B)  Cells are the smallest unit of living organisms. 
C)  New cells come only from pre-existing cells by cell division. 
D)  Cells are the smallest unit of living organisms and new cells form from pre-existing cells by cell division. 
E)  All living organisms are composed of one or more cells, cells are the smallest units of life, and new . cells come only from pre-existing cells by cell division. 
A)  All living things are composed of one or more cells. 
B)  Cells are the smallest unit of living organisms. 
C)  New cells come only from pre-existing cells by cell division. 
D)  Cells are the smallest unit of living organisms and new cells form from pre-existing cells by cell division. 
E)  All living organisms are composed of one or more cells, cells are the smallest units of life, and new . cells come only from pre-existing cells by cell division.

Exam 4: General Features of Cells

The cytoskeleton and motor proteins are important for which of the following processes?

Which of the following is INCORRECT about ribosome biosynthesis and structure?

Which of the following statements about peroxisomes is INCORRECT?

The nucleus is to eukaryotes as the ________ is to prokaryotes.

The first step in cotranslational sorting is the peptide is directed to the endoplasmic reticulum.

Prokaryotes

Which cytoskeletal structures represent a highly diverse group of tension-bearing fibers important to the maintenance of cell shape?

Which two cell scientists are credited with the formulation of the cell theory, also known as the cell doctrine?

In animal cells microtubules grow from which structure?

Which of the following organelles can grow and divide to reproduce themselves?

This cytoskeletal structure is composed of actin and regulates cell shape, cell movement, and muscle contraction.

The flagellum is used for cell motility in eukaryotes only.

This is a tool that enables researchers to study the structure and function of cells.

Which of the following is NOT true for cilia or flagella?

Which one of the following pairs is mismatched?

Which of the following plant organelle is a colorless plastid that stores starch in roots?

Lysosomes digest intracellular debris, such as organelles, through the process of __________.

Which would be the most accurate endomembrane route through which a protein is secreted from a cell?

Plasma membranes are a feature of

Which of the following are principles of the cell theory or cell doctrine?

An Introduction to Biology

The Chemical Basis of Life I: Atoms, Molecules, and Water

The Chemical Basis of Life II: Organic Molecules

Membrane Structure, Synthesis, and Transport

An Introduction to Energy, Enzymes, and Metabolism

Cellular Respiration, Fermentation, and Secondary Metabolism

Photosynthesis

Cell Communication

Multicellularity

Nucleic Acid Structure, DNA Replication, and Chromosome Structure

Gene Expression at the Molecular Level

Gene Regulation

Mutation, DNA Repair, and Cancer

The Eukaryotic Cell Cycle, Mitosis, and Meiosis

Simple Patterns of Inheritance

Complex Patterns of Inheritance

Genetics of Viruses and Bacteria

Developmental Genetics

Genetic Technology

Genomes, Proteomes, and Bioinformatics

The Origin and History of Life

An Introduction to Evolution

Population Genetics

Origin of Species and Macroevolution

Taxonomy and Systematics

Bacteria and Archaea

Protists

Plants and the Conquest of Land

The Evolution and Diversity of Modern Gymnosperms and Angiosperms

Fungi

An Introduction to Animal Diversity

The Invertebrates

The Vertebrates

An Introduction to Flowering Plant Form and Function

Flowering Plants: Behavior

Flowering Plants: Nutrition

Flowering Plants: Transport

Flowering Plants: Reproduction

Introduction to Animal Form and Function

Neuroscience I: Cells of the Nervous System

Neuroscience Ii: Evolution and Function of the Brain and Nervous Systems

Neuroscience Iii: Sensory Systems

The Muscular-Skeletal System and Locomotion

Nutrition, Digestion, and Absorption

Control of Energy Balance, Metabolic Rate, and Body Temperature

Circulatory Systems

Respiratory Systems

Excretory Systems and Salt and Water Balance

Endocrine Systems

Animal Reproduction

Animal Development

Immune Systems

An Introduction to Ecology and Biomes

Behavioral Ecology

Population Ecology

Species Interactions

Community Ecology

Ecosystems Ecology

Biodiversity and Conservation Biology