Question 1

Oxyhemoglobin tends to give up oxygen where

Accepted Answer

A) the pH is low. 
B) the tissues are warmer. 
C) the partial pressure of O2 is low. 
D) the partial pressure of CO2 is high. 
E) all of these occur. 
A) the pH is low. 
B) the tissues are warmer. 
C) the partial pressure of O2 is low. 
D) the partial pressure of CO2 is high. 
E) all of these occur.

Question 2

Emphysema affects about __________ million people in the United States in a given year.

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 3

At what partial pressure of oxygen do half the heme groups in human blood have oxygen bound?

Accepted Answer

A) 30 mm Hg 
B) 100 mm Hg 
C) 70 mm Hg 
D) 104 mm Hg 
E) all of these 
A) 30 mm Hg 
B) 100 mm Hg 
C) 70 mm Hg 
D) 104 mm Hg 
E) all of these

Question 4

All of the following characterize nitrogen narcosis EXCEPT

Accepted Answer

A) muscle cramps. 
B) neural signal disruption. 
C) euphoria. 
D) drowsiness. 
E) weakness. 
A) muscle cramps. 
B) neural signal disruption. 
C) euphoria. 
D) drowsiness. 
E) weakness.

Question 5

Which of the following is false?

Accepted Answer

A) All respiratory surfaces must be kept moist. 
B) The amount of gas diffusing across a respiratory membrane is dependent upon the surface area and the partial pressure of each gas. 
C) The surface area of a growing cell increases at the same rate as its volume. 
D) Ventilation maintains partial pressure gradients between the atmosphere and the lungs. 
E) Breathing and ventilation are equivalent in respiration. 
A) All respiratory surfaces must be kept moist. 
B) The amount of gas diffusing across a respiratory membrane is dependent upon the surface area and the partial pressure of each gas. 
C) The surface area of a growing cell increases at the same rate as its volume. 
D) Ventilation maintains partial pressure gradients between the atmosphere and the lungs. 
E) Breathing and ventilation are equivalent in respiration.

Question 6

Myoglobin is different from hemoglobin in that it

Accepted Answer

A) is a protein. 
B) is a pigment. 
C) stores oxygen. 
D) has an affinity for oxygen. 
E) is composed of multiple protein chains. 
A) is a protein. 
B) is a pigment. 
C) stores oxygen. 
D) has an affinity for oxygen. 
E) is composed of multiple protein chains.

Question 7

Which of the following is true regarding chronic bronchitis?

Accepted Answer

A) It is a leading cause of lung cancer. 
B) The lungs become elastic. 
C) It can lead to emphysema. 
D) The alveoli shrink. 
E) All of these are true. 
A) It is a leading cause of lung cancer. 
B) The lungs become elastic. 
C) It can lead to emphysema. 
D) The alveoli shrink. 
E) All of these are true.

Question 8

During normal exhalation,

Accepted Answer

A) the diaphragm relaxes. 
B) the intercostal muscles relax. 
C) the pressure in the lungs increases. 
D) the lung volume decreases. 
E) all of these occur. 
A) the diaphragm relaxes. 
B) the intercostal muscles relax. 
C) the pressure in the lungs increases. 
D) the lung volume decreases. 
E) all of these occur.

Question 9

Most of the carbon dioxide produced by the body is transported to the lungs

Accepted Answer

A) in gaseous form. 
B) in blood plasma. 
C) as carbaminohemoglobin. 
D) as bicarbonate ions. 
E) as carbonic acid. 
A) in gaseous form. 
B) in blood plasma. 
C) as carbaminohemoglobin. 
D) as bicarbonate ions. 
E) as carbonic acid.

Question 10

The most abundant gas in the earth's atmosphere is

Accepted Answer

A) oxygen. 
B) water vapor. 
C) argon. 
D) nitrogen. 
E) carbon dioxide. 
A) oxygen. 
B) water vapor. 
C) argon. 
D) nitrogen. 
E) carbon dioxide.

Question 11

The movement of both oxygen and carbon dioxide in the body is accomplished by

Accepted Answer

A) exocytosis and endocytosis. 
B) facilitated diffusion. 
C) osmosis. 
D) simple diffusion. 
E) active transport. 
A) exocytosis and endocytosis. 
B) facilitated diffusion. 
C) osmosis. 
D) simple diffusion. 
E) active transport.

Exam 39: Respiration

Oxyhemoglobin tends to give up oxygen where

Emphysema affects about __________ million people in the United States in a given year.

At what partial pressure of oxygen do half the heme groups in human blood have oxygen bound?

All of the following characterize nitrogen narcosis EXCEPT

Which of the following is false?

Myoglobin is different from hemoglobin in that it

Which of the following is true regarding chronic bronchitis?

During normal exhalation,

Most of the carbon dioxide produced by the body is transported to the lungs

The most abundant gas in the earth's atmosphere is

The movement of both oxygen and carbon dioxide in the body is accomplished by

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters