Question 1

Which of the following statements correctly describes some aspect of protein secretion from prokaryotic cells?

Accepted Answer

A) Prokaryotes are unlikely to be able to secrete proteins because they lack an endomembrane system. 
B) The mechanism of protein secretion in prokaryotes is probably the same as that in eukaryotes. 
C) Proteins that are secreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane. 
D) In prokaryotes, the ribosomes that are used for the synthesis of secreted proteins are located outside of the cell. 
E) Prokaryotes contain large pores in their plasma membrane that permit the movement of proteins out of the cell. 
A) Prokaryotes are unlikely to be able to secrete proteins because they lack an endomembrane system. 
B) The mechanism of protein secretion in prokaryotes is probably the same as that in eukaryotes. 
C) Proteins that are secreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane. 
D) In prokaryotes, the ribosomes that are used for the synthesis of secreted proteins are located outside of the cell. 
E) Prokaryotes contain large pores in their plasma membrane that permit the movement of proteins out of the cell. C

Question 2

Vinblastine, a drug that inhibits microtubule polymerization, is used to treat some forms of cancer. Cancer cells given vinblastine would be unable to

Accepted Answer

A) form cleavage furrows during cell division. 
B) migrate by amoeboid movement. 
C) separate chromosomes during cell division. 
D) extend pseudopods. 
E) maintain the shape of the nucleus. 
A) form cleavage furrows during cell division. 
B) migrate by amoeboid movement. 
C) separate chromosomes during cell division. 
D) extend pseudopods. 
E) maintain the shape of the nucleus. C

Question 3

Use the following figure to answer the questions below.
  
-What is the function of the structure labelled A?

Accepted Answer

A) respiration 
B) photosynthesis 
C) maintain cell pressure 
D) contain DNA 
E) synthesize lipids 
A) respiration 
B) photosynthesis 
C) maintain cell pressure 
D) contain DNA 
E) synthesize lipids D

Question 4

Use the following figure to answer the questions below.
  
-In the figure above, identify the rough endoplasmic reticulum.

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) The RER is not visible on this image. 
A) A 
B) B 
C) C 
D) D 
E) The RER is not visible on this image.

Question 5

Use the following figure to answer the questions below.
  
-What type of cell is pictured above?

Accepted Answer

A) Archaea 
B) Bacteria 
C) protist 
D) plant 
E) animal 
A) Archaea 
B) Bacteria 
C) protist 
D) plant 
E) animal

Question 6

Which of the following contain the 9 + 2 arrangement of microtubules, consisting of nine doublets of microtubules surrounding a pair of single microtubules?

Accepted Answer

A) both motile cilia and primary (nonmotile)cilia 
B) centrioles only 
C) both flagella and motile cilia 
D) both basal bodies and primary (nonmotile)cilia 
E) both centrioles and basal bodies 
A) both motile cilia and primary (nonmotile)cilia 
B) centrioles only 
C) both flagella and motile cilia 
D) both basal bodies and primary (nonmotile)cilia 
E) both centrioles and basal bodies

Question 7

Prokaryotes are classified as belonging to two different domains. What are the domains?

Accepted Answer

A) Bacteria and Eukarya 
B) Bacteria and Archaea 
C) Archaea and Protista 
D) Bacteria and Protista 
E) Bacteria and Fungi 
A) Bacteria and Eukarya 
B) Bacteria and Archaea 
C) Archaea and Protista 
D) Bacteria and Protista 
E) Bacteria and Fungi

Question 8

If radioactive deoxythymidine triphosphate (dTTP)is added to a culture of rapidly growing bacterial cells, where in the cell would you expect to find the greatest concentration of radioactivity?

Accepted Answer

A) nucleus 
B) cytoplasm 
C) endoplasmic reticulum 
D) nucleoid 
E) ribosomes 
A) nucleus 
B) cytoplasm 
C) endoplasmic reticulum 
D) nucleoid 
E) ribosomes

Question 9

Use the following figure to answer the questions below.
  
-The image above is a ________ image.

Accepted Answer

A) light microscope 
B) phase contrast 
C) scanning electron micrograph 
D) transmission electron micrograph 
E) confocal 
A) light microscope 
B) phase contrast 
C) scanning electron micrograph 
D) transmission electron micrograph 
E) confocal

Question 10

Which plant cell organelle contains its own DNA and ribosomes?

Accepted Answer

A) glyoxysome 
B) vacuole 
C) mitochondrion 
D) Golgi apparatus 
E) peroxisome 
A) glyoxysome 
B) vacuole 
C) mitochondrion 
D) Golgi apparatus 
E) peroxisome

Question 11

All of the following are part of a prokaryotic cell except

Accepted Answer

A) DNA. 
B) a cell wall. 
C) a plasma membrane. 
D) ribosomes. 
E) an endoplasmic reticulum. 
A) DNA. 
B) a cell wall. 
C) a plasma membrane. 
D) ribosomes. 
E) an endoplasmic reticulum.

Question 12

The extracellular matrix is thought to participate in the regulation of animal cell behaviour by communicating information from the outside to the inside of the cell via which of the following?

Accepted Answer

A) gap junctions 
B) the nucleus 
C) DNA and RNA 
D) integrins 
E) plasmodesmata 
A) gap junctions 
B) the nucleus 
C) DNA and RNA 
D) integrins 
E) plasmodesmata

Question 13

Signals between the ECM and the cytoskeleton may be transmitted by

Accepted Answer

A) fibronectin. 
B) proteoglycans. 
C) integrins. 
D) collagen. 
E) middle lamella. 
A) fibronectin. 
B) proteoglycans. 
C) integrins. 
D) collagen. 
E) middle lamella.

Question 14

The smallest unit of matter that can be considered alive is the/a

Accepted Answer

A) nucleic acid. 
B) mitochondria. 
C) virus. 
D) cell. 
E) organism. 
A) nucleic acid. 
B) mitochondria. 
C) virus. 
D) cell. 
E) organism.

Question 15

Which organelle often takes up much of the volume of a plant cell?

Accepted Answer

A) lysosome 
B) vacuole 
C) mitochondrion 
D) Golgi apparatus 
E) peroxisome 
A) lysosome 
B) vacuole 
C) mitochondrion 
D) Golgi apparatus 
E) peroxisome

Question 16

A biologist wants specifically to examine the surfaces of different types of cells in kidney tubules of small mammals. The cells in question can be distinguished by external shape, size, and 3-D characteristics. Which of the following would be the optimum method for her study?

Accepted Answer

A) transmission electron microscopy 
B) cell fractionation 
C) light microscopy using stains specific to kidney function 
D) light microscopy of living unstained material 
E) scanning electron microscopy 
A) transmission electron microscopy 
B) cell fractionation 
C) light microscopy using stains specific to kidney function 
D) light microscopy of living unstained material 
E) scanning electron microscopy

Question 17

Cytochalasin D is a drug that prevents actin polymerization. A cell treated with cytochalasin D will still be able to

Accepted Answer

A) perform amoeboid movement. 
B) form cleavage furrows. 
C) contract muscle fibres. 
D) extend pseudopodia. 
E) move vesicles around the cell. 
A) perform amoeboid movement. 
B) form cleavage furrows. 
C) contract muscle fibres. 
D) extend pseudopodia. 
E) move vesicles around the cell.

Question 18

When a potassium ion (K⁺)moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several cellular structures. Which of the following correctly describes the order in which these structures will be encountered by the ion?

Accepted Answer

A) plasma membrane → primary cell wall → cytoplasm → vacuole 
B) secondary cell wall → plasma membrane → primary cell wall → cytoplasm → vacuole 
C) primary cell wall → plasma membrane → cytoplasm → vacuole 
D) primary cell wall → plasma membrane → lysosome → cytoplasm → vacuole 
E) primary cell wall → plasma membrane → cytoplasm → secondary cell wall → vacuole 
A) plasma membrane → primary cell wall → cytoplasm → vacuole 
B) secondary cell wall → plasma membrane → primary cell wall → cytoplasm → vacuole 
C) primary cell wall → plasma membrane → cytoplasm → vacuole 
D) primary cell wall → plasma membrane → lysosome → cytoplasm → vacuole 
E) primary cell wall → plasma membrane → cytoplasm → secondary cell wall → vacuole

Question 19

Which type of organelle or structure is primarily involved in the synthesis of oils, phospholipids, and steroids?

Accepted Answer

A) ribosome 
B) lysosome 
C) smooth endoplasmic reticulum 
D) mitochondrion 
E) contractile vacuole 
A) ribosome 
B) lysosome 
C) smooth endoplasmic reticulum 
D) mitochondrion 
E) contractile vacuole

Question 20

Which of the following makes it necessary for animal cells, although they have no cell walls, to have intercellular junctions?

Accepted Answer

A) Cell membranes do not distinguish the types of ions and molecules passing through them. 
B) Large molecules, such as proteins and RNA molecules, do not readily get through one, much less two, adjacent cell membranes. 
C) Cell-to-cell communication requires physical attachment of one cell to another. 
D) Maintenance of tissue integrity and barriers to fluid leakage requires cells to adhere tightly to one another. 
E) The relative shapelessness of animal cells requires a mechanism for keeping the cells aligned. 
A) Cell membranes do not distinguish the types of ions and molecules passing through them. 
B) Large molecules, such as proteins and RNA molecules, do not readily get through one, much less two, adjacent cell membranes. 
C) Cell-to-cell communication requires physical attachment of one cell to another. 
D) Maintenance of tissue integrity and barriers to fluid leakage requires cells to adhere tightly to one another. 
E) The relative shapelessness of animal cells requires a mechanism for keeping the cells aligned.

Exam 6: A Tour of the Cell

Which of the following statements correctly describes some aspect of protein secretion from prokaryotic cells?

Vinblastine, a drug that inhibits microtubule polymerization, is used to treat some forms of cancer. Cancer cells given vinblastine would be unable to

Use the following figure to answer the questions below. -What is the function of the structure labelled A?

Use the following figure to answer the questions below. -In the figure above, identify the rough endoplasmic reticulum.

Use the following figure to answer the questions below. -What type of cell is pictured above?

Which of the following contain the 9 + 2 arrangement of microtubules, consisting of nine doublets of microtubules surrounding a pair of single microtubules?

Prokaryotes are classified as belonging to two different domains. What are the domains?

If radioactive deoxythymidine triphosphate (dTTP)is added to a culture of rapidly growing bacterial cells, where in the cell would you expect to find the greatest concentration of radioactivity?

Use the following figure to answer the questions below. -The image above is a ________ image.

Which plant cell organelle contains its own DNA and ribosomes?

All of the following are part of a prokaryotic cell except

The extracellular matrix is thought to participate in the regulation of animal cell behaviour by communicating information from the outside to the inside of the cell via which of the following?

Signals between the ECM and the cytoskeleton may be transmitted by

The smallest unit of matter that can be considered alive is the/a

Which organelle often takes up much of the volume of a plant cell?

A biologist wants specifically to examine the surfaces of different types of cells in kidney tubules of small mammals. The cells in question can be distinguished by external shape, size, and 3-D characteristics. Which of the following would be the optimum method for her study?

Cytochalasin D is a drug that prevents actin polymerization. A cell treated with cytochalasin D will still be able to

When a potassium ion (K⁺)moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several cellular structures. Which of the following correctly describes the order in which these structures will be encountered by the ion?

Which type of organelle or structure is primarily involved in the synthesis of oils, phospholipids, and steroids?

Which of the following makes it necessary for animal cells, although they have no cell walls, to have intercellular junctions?

Introduction: Evolution and Themes of Biology

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Regulation of Gene Expression

Viruses

Dna Tools and Biotechnology

Genomes and Their Evolution

Descent With Modification: a Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity Ii: the Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signalling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behaviour

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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