Exam 4: Cell Membranes and Signaling

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Physiological saline is 0.9% NaCl. Red blood cells placed in such a solution will NOT gain or lose water; therefore, one could state that the fluid in red blood cells is hypertonic.

(True/False)

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Question 61

Which phrase describes the selective permeability of a membrane?

(Multiple Choice)

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Question 62

An animal cell placed in a hypertonic solution will swell and perhaps burst.

(True/False)

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Question 63

How are the membranes of animal cells in winter able to remain fluid when the weather becomes extremely cold?

(Multiple Choice)

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Question 64

What type of channel opens in response to changes in ionic charge across a membrane?

(Multiple Choice)

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Question 65

A water concentration gradient is influenced by the number of solute molecules present on both sides of the membrane.

(True/False)

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Question 66

Which of the following is responsible for maintaining the membrane potential?

(Multiple Choice)

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Question 67

What is the sequence of signal transduction?

(Multiple Choice)

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Question 68

How are integral and peripheral proteins similar to each other?

(Multiple Choice)

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Question 69

Which of the following molecules could be secreted from a eukaryotic cell?

(Multiple Choice)

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Question 70

These micrographs of animal cells depict the effects of various aqueous environments on red blood cells placed in a hypotonic, hypertonic, or isotonic environment. Match each term to a micrograph. ©1976 The Rockefeller University Press. The Journal of Cell Biology, 1976, 70:193-203. doi: 10.1083/jcb.70.1.1 -hypertonic

(Short Answer)

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Question 71

Suppose that you are comparing the outside and inside halves of a cell membrane's phospholipid bilayer. Which of the following describes the composition of the lipids on the two surfaces?

(Multiple Choice)

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Question 72

Which of the following strongly suggests that the membrane is exposed to low temperature?

(Multiple Choice)

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Question 73

These micrographs of animal cells depict the effects of various aqueous environments on red blood cells placed in a hypotonic, hypertonic, or isotonic environment. Match each term to a micrograph. ©1976 The Rockefeller University Press. The Journal of Cell Biology, 1976, 70:193-203. doi: 10.1083/jcb.70.1.1 -isotonic

(Short Answer)

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(78)

Question 74

Identify the structures indicated in this drawing of a typical plasma membrane. -cholesterol

(Short Answer)

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Question 75

How are simple diffusion and facilitated diffusion different?

(Multiple Choice)

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Question 76

How do the various membranes of a cell differ?

(Multiple Choice)

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Question 77

Which term refers to the voltage across a membrane?

(Multiple Choice)

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Question 78

How do small polar and charged molecules typically cross the cell membrane?

(Multiple Choice)

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Question 79

How are receptor-mediated endocytosis and pinocytosis different?

(Multiple Choice)

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Question 80

Showing 61 - 80 of 81

Exam 4: Cell Membranes and Signaling

Physiological saline is 0.9% NaCl. Red blood cells placed in such a solution will NOT gain or lose water; therefore, one could state that the fluid in red blood cells is hypertonic.

Which phrase describes the selective permeability of a membrane?

An animal cell placed in a hypertonic solution will swell and perhaps burst.

How are the membranes of animal cells in winter able to remain fluid when the weather becomes extremely cold?

What type of channel opens in response to changes in ionic charge across a membrane?

A water concentration gradient is influenced by the number of solute molecules present on both sides of the membrane.

Which of the following is responsible for maintaining the membrane potential?

What is the sequence of signal transduction?

How are integral and peripheral proteins similar to each other?

Which of the following molecules could be secreted from a eukaryotic cell?

Suppose that you are comparing the outside and inside halves of a cell membrane's phospholipid bilayer. Which of the following describes the composition of the lipids on the two surfaces?

Which of the following strongly suggests that the membrane is exposed to low temperature?

Identify the structures indicated in this drawing of a typical plasma membrane. -cholesterol

How are simple diffusion and facilitated diffusion different?

How do the various membranes of a cell differ?

Which term refers to the voltage across a membrane?

How do small polar and charged molecules typically cross the cell membrane?

How are receptor-mediated endocytosis and pinocytosis different?

Light and Life

The Cell: an Overview

Energy and Enzymes

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

The Chromosomal Basis of Mendelian Inheritance

Genetic Linkage, Sex-Linkage, and Other Non-Mendelian Inheritance Mechanisms

DNA Structure, Replication, and Repair

Gene Structure Expression, and Mutation

Regulation of Gene Expression

Dna Technologies

Genomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Speciation and Macroevolution

Systematics and Phylogenetics: Revealing the Tree of Life

Humans and Evolution

Defining Life and Its Origins

Viruses, Viroids, and Prions: Infectious Biological Particles

Bacteria and Archaea

Protists

Fungi

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Conservation of Biodiversity

Population Ecology

Species Interactions and Community Ecology

Ecosystems

Animal Behaviour

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Animal Nutrition

Gas Exchange: the Respiratory System

Internal Transport: the Circulatory System

Regulation of the Internal Environment: Water, Solutes, and Temperature

Control of Animal Processes: Endocrine Control

Animal Reproduction

Control of Animal Processes: Neural Control

Muscles, Skeletons, and Body Movements

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