Question 1

What is required for facilitated diffusion to take place?

Accepted Answer

A)  energy from ATP 
B)  a transmembrane protein 
C)  the transport of large food particles 
D)  the transport of small nonpolar molecules 
E)  movement down a concentration gradient 
A)  energy from ATP 
B)  a transmembrane protein 
C)  the transport of large food particles 
D)  the transport of small nonpolar molecules 
E)  movement down a concentration gradient

Question 2

How do the phospholipids in vegetable oil differ from those of animal fat?

Accepted Answer

A)  The fatty acid tails bend. 
B)  The fatty acid tails lack double bonds. 
C)  The fatty acid tails are a chain of saturated fats. 
D)  The fatty acid tails solidify at room temperature. 
E)  The fatty acid tails interact via van der Waals forces. 
A)  The fatty acid tails bend. 
B)  The fatty acid tails lack double bonds. 
C)  The fatty acid tails are a chain of saturated fats. 
D)  The fatty acid tails solidify at room temperature. 
E)  The fatty acid tails interact via van der Waals forces.

Question 3

How do gap junctions differ from desmosomes?

Accepted Answer

A)  A gap junction bridges the space between cells. 
B)  A gap junction is a much larger space between cells. 
C)  A gap junction provides communication between cells. 
D)  A gap junction can control the passage of materials between cells. 
E)  A gap junction requires the use of ATP to open and close its channels. 
A)  A gap junction bridges the space between cells. 
B)  A gap junction is a much larger space between cells. 
C)  A gap junction provides communication between cells. 
D)  A gap junction can control the passage of materials between cells. 
E)  A gap junction requires the use of ATP to open and close its channels.

Question 4

Mutations to ABC transporter genes contribute to cystic fibrosis. 
__________________

Accepted Answer

A) True 
 B)False

Question 5

What have studies of glucose transport in liposomes revealed?

Accepted Answer

A)  Glucose is transported against a concentration gradient. 
B)  Glucose moves readily across the membrane by simple diffusion. 
C)  Glucose phosphates move readily across the membrane by simple diffusion. 
D)  The binding of glucose triggers a conformational change in the carrier protein. 
E)  The transport of solutes via carrier proteins is faster than via channel proteins. 
A)  Glucose is transported against a concentration gradient. 
B)  Glucose moves readily across the membrane by simple diffusion. 
C)  Glucose phosphates move readily across the membrane by simple diffusion. 
D)  The binding of glucose triggers a conformational change in the carrier protein. 
E)  The transport of solutes via carrier proteins is faster than via channel proteins.

Question 6

When the net movement of water in and out a cell is zero, that solution is said to be:

Accepted Answer

A)  osmotic 
B)  isotonic 
C)  hypotonic 
D)  hypertonic 
E)  pressurized 
A)  osmotic 
B)  isotonic 
C)  hypotonic 
D)  hypertonic 
E)  pressurized

Question 7

Identify and discuss three different roles for membrane proteins.

Accepted Answer

The answer of Identify and discuss three different roles for...

Question 8

Which statement about plasma membranes is false ?

Accepted Answer

A)  Plasma membranes regulate the passage of materials. 
B)  Plasma membranes divide the cell into compartments. 
C)  Plasma membranes serve as surfaces for chemical reactions. 
D)  Plasma membranes prevent communication with other cells. 
E)  Plasma membranes transmit signals between the environment and the interior of the cell. 
A)  Plasma membranes regulate the passage of materials. 
B)  Plasma membranes divide the cell into compartments. 
C)  Plasma membranes serve as surfaces for chemical reactions. 
D)  Plasma membranes prevent communication with other cells. 
E)  Plasma membranes transmit signals between the environment and the interior of the cell.

Question 9

Compare and contrast the processes of facilitated diffusion and active transport.

Accepted Answer

Concepts to Consider: Facilitated diffus

Exam 5: Biological Membranes

What is required for facilitated diffusion to take place?

How do the phospholipids in vegetable oil differ from those of animal fat?

How do gap junctions differ from desmosomes?

Mutations to ABC transporter genes contribute to cystic fibrosis. __________________

What have studies of glucose transport in liposomes revealed?

When the net movement of water in and out a cell is zero, that solution is said to be:

Identify and discuss three different roles for membrane proteins.

Which statement about plasma membranes is false ?

Compare and contrast the processes of facilitated diffusion and active transport.

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

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