Circulation And Gas Exchange - Discover Biology | Biology+

Course

Introductory Biology

Study Pack

Set 1: The Nature of Science and the Characteristics of Life

Set 2: Biological Diversity, Bacteria, and Archaea

Set 3: Protista, Plantae, and Fungi

Set 4: Animalia

Set 5: The Chemistry of Life

Set 6: Cell Structure and Internal Compartments

Set 7: Cell Membranes, Transport, and Communication

Set 8: Energy, Metabolism, and Enzymes

Set 9: Photosynthesis and Cellular Respiration

Set 10: Cell Division

Set 11: Stem Cells, Cancer, and Human Health

Set 12: Patterns of Inheritance

Set 13: Chromosomes and Human Genetics

Set 14: Dna and Genes

Set 15: From Gene to Protein

Set 16: Dna Technology

Set 17: How Evolution Works

Set 18: Evolution of Populations

Set 19: Speciation and the Origins of Biological Diversity

Set 20: The Evolutionary History of Life

Set 21: The Biosphere

Set 22: Growth of Populations

Set 23: Ecological Communities

Set 24: Ecosystems

Set 25: Global Change

Set 26: Internal Organization and Homeostasis

Set 27: Nutrition and Digestion

Set 28: Circulation and Gas Exchange

Set 29: Animal Hormones

Set 30: Nervous and Sensory Systems

Set 31: Skeletons, Muscles, and Movement

Set 32: Defenses Against Disease

Set 33: Reproduction and Development

Set 34: Animal Behavior

Set 35: Plant Structure, Nutrition, and Transport

Set 36: Plant Growth and Reproduction

Set 28 Circulation And Gas Exchange

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Set 28 Circulation And Gas Exchange

(Multiple Choice)

Free

Air entering the lungs has a

A)higher concentration of carbon dioxide than air in an alveolus.
B)higher concentration of both carbon dioxide and oxygen than in an alveolus.
C)higher concentration of oxygen and a lower concentration of carbon dioxide than in an alveolus.
D)lower concentration of oxygen and a concentration of carbon dioxide equal to that in an alveolus.

Answer

(Multiple Choice)

Free

The breaking open of alveoli in people with emphysema decreases their rate of gas exchange because

A)the distance between the air they breathe in and the blood is decreased.
B)there is less pressure in the lungs to force the oxygen to dissolve in the blood.
C)the concentration of oxygen in the lungs becomes much greater than that in the blood.
D)their lungs have less surface area available for diffusion.

Answer

(Multiple Choice)

Free

In cystic fibrosis, parts of the respiratory tract can be clogged with mucus and inhibit gas exchange. The areas of the respiratory tract where gases are directly exchanged are the

A)alveoli.
B)bronchi.
C)diaphragm.
D)trachea.

Answer