Question 1

Why isn't the mitochondrion classified as part of the endomembrane system?

Accepted Answer

A) It is a static structure. 
B) Its structure is not derived from the ER or Golgi. 
C) It has too many vesicles. 
D) It is not involved in protein synthesis. 
E) It is not attached to the outer nuclear envelope. 
A) It is a static structure. 
B) Its structure is not derived from the ER or Golgi. 
C) It has too many vesicles. 
D) It is not involved in protein synthesis. 
E) It is not attached to the outer nuclear envelope.

Question 2

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 3

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 rough endoplasmic reticulum is not visible on this image. 
A) A 
B) B 
C) C 
D) D 
E) The rough endoplasmic reticulum is not visible on this image.

Question 4

What is a cell with an extensive smooth endoplasmic reticulum likely to be is specialized in?

Accepted Answer

A) protein storage 
B) synthesis of large quantities of lipids 
C) export protein molecules 
D) import and export protein molecules 
E) communication with other cells 
A) protein storage 
B) synthesis of large quantities of lipids 
C) export protein molecules 
D) import and export protein molecules 
E) communication with other cells

Question 5

What types of proteins are not synthesized in the rough ER?

Accepted Answer

A) endoplasmic reticulum proteins 
B) extracellular matrix proteins 
C) secreted proteins 
D) mitochondrial proteins 
E) plasma membrane proteins 
A) endoplasmic reticulum proteins 
B) extracellular matrix proteins 
C) secreted proteins 
D) mitochondrial proteins 
E) plasma membrane proteins

Question 6

Which structure is the site of the synthesis of proteins that may be exported from the cell?

Accepted Answer

A) rough ER 
B) lysosomes 
C) plasmodesmata 
D) Golgi vesicles 
E) free cytoplasmic ribosomes 
A) rough ER 
B) lysosomes 
C) plasmodesmata 
D) Golgi vesicles 
E) free cytoplasmic ribosomes

Question 7

H.V.Wilson worked with sponges to gain some insight into what was responsible for holding adjacent cells together.He exposed two species of differently pigmented sponges to a chemical that disrupted the cell-cell interaction (cell junctions),and the cells of the sponges dissociated.Wilson then mixed the cells of the two species and removed the chemical that caused the cells to dissociate.Wilson found that the sponges reassembled into two separate species.The cells from one species did not interact or form associations with the cells of the other species.How do you explain the results of Wilson's experiments?

Accepted Answer

A) The two species of sponge had different enzymes that functioned in the reassembly process. 
B) The molecules responsible for cell-cell adhesion (cell junctions)were irreversibly destroyed during the experiment. 
C) The molecules responsible for cell-cell adhesion (cell junctions)differed between the two species of sponge. 
D) One cell functioned as the nucleus for each organism, thereby attracting only cells with the same pigment. 
E) Tight junctions were able to reform but gap junctions were not. 
A) The two species of sponge had different enzymes that functioned in the reassembly process. 
B) The molecules responsible for cell-cell adhesion (cell junctions)were irreversibly destroyed during the experiment. 
C) The molecules responsible for cell-cell adhesion (cell junctions)differed between the two species of sponge. 
D) One cell functioned as the nucleus for each organism, thereby attracting only cells with the same pigment. 
E) Tight junctions were able to reform but gap junctions were not.

Question 8

Which organelle is the primary site of ATP synthesis in eukaryotic cells?

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 9

In the fractionation of homogenized cells using centrifugation,the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is

Accepted Answer

A) the relative solubility of the component. 
B) the size and weight of the component. 
C) the percentage of carbohydrates in the component. 
D) the presence or absence of nucleic acids in the component. 
E) the presence or absence of lipids in the component. 
A) the relative solubility of the component. 
B) the size and weight of the component. 
C) the percentage of carbohydrates in the component. 
D) the presence or absence of nucleic acids in the component. 
E) the presence or absence of lipids in the component.

Question 10

Plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells?

Accepted Answer

A) peroxisomes 
B) desmosomes 
C) gap junctions 
D) extracellular matrix 
E) tight junctions 
A) peroxisomes 
B) desmosomes 
C) gap junctions 
D) extracellular matrix 
E) tight junctions

Question 11

Which animal cell organelle contains enzymes that transfer hydrogen from various substrates to oxygen?

Accepted Answer

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

Exam 6: A Tour of the Cell

Why isn't the mitochondrion classified as part of the endomembrane system?

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

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

What is a cell with an extensive smooth endoplasmic reticulum likely to be is specialized in?

What types of proteins are not synthesized in the rough ER?

Which structure is the site of the synthesis of proteins that may be exported from the cell?

Which organelle is the primary site of ATP synthesis in eukaryotic cells?

In the fractionation of homogenized cells using centrifugation,the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is

Plasmodesmata in plant cells are most similar in function to which of the following structures in animal cells?

Which animal cell organelle contains enzymes that transfer hydrogen from various substrates to oxygen?

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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