Gas Exchange
a protein that can bind four molecules of oxygen - correct answer ✔✔Hemoglobin
After blood becomes oxygenated, - correct answer ✔✔it returns to the heart, and is then pumped to
body cells.
In the blood, oxygen is bound to hemoglobin, a protein found in red blood cells. - correct answer
✔✔Which statement is correct?
1. Oxygen diffuses from large blood vessels into the body's cells.
2. In the blood, oxygen is bound to hemoglobin, a protein found in red blood cells.
3.Oxygen is released from the mitochondria as a product of cellular respiration.
4.Carbon dioxide diffuses from the alveoli into surrounding capillaries.
5.As oxygen diffuses from the lungs into capillaries, blood becomes deoxygenated.
From which structures do oxygen molecules move from the lungs to the blood? - correct answer
✔✔Alveoli
During inhalation, - correct answer ✔✔the diaphragm and rib muscles contract
Carbon dioxide transport - correct answer ✔✔1. Carbon dioxide is released from mitochondria
2. Carbon dioxide diffuses into a capillary
3. Carbon dioxide Is carried to the lungs
4. Carbon dioxide diffuses into a alveolus
5. Air exits through the nose or mouth
Oxogen transport - correct answer ✔✔1. Oxygen diffuses from the alveoli into surropumding capillaries
2. Oxygen enters a red blood cell
, 3. Oxygen binds to a molecule of hemoglobin
4. Oxygen carried through blood vessels to a capillary
5. Oxygen diffuse from the blood to the body's tissues
Which of the following normally contains the highest concentration of oxygen? - correct answer ✔✔air
entering the respiratory system
In saltwater and freshwater environments, _____. - correct answer ✔✔the concentration of oxygen in
water is lower than in air
The human nose is involved in _____.
1. producing mucus
2. exchanging gases with the capillaries
3. filtering the air
4. gas exchange with the trachea - correct answer ✔✔filtering the air
Humans can talk and sing because they can _____.
1. tense and relax the vocal cords as air flows past them
2. regulate the flow of air through the nose
3. contract and relax the diaphragm
4. modulate the flow of air through the trachea - correct answer ✔✔1. tense and relax the vocal cords as
air flows past them
Cigarettes contain over _____ different chemicals. - correct answer ✔✔4000
About how many years after quitting smoking does it take for the risk of heart disease and death to
return to levels similar to those seen in people who never smoked? - correct answer ✔✔15
If you relax a tense abdomen during diaphragm contraction, what effect does this have on breathing? -
correct answer ✔✔It increases the vital capacity of the lungs
a protein that can bind four molecules of oxygen - correct answer ✔✔Hemoglobin
After blood becomes oxygenated, - correct answer ✔✔it returns to the heart, and is then pumped to
body cells.
In the blood, oxygen is bound to hemoglobin, a protein found in red blood cells. - correct answer
✔✔Which statement is correct?
1. Oxygen diffuses from large blood vessels into the body's cells.
2. In the blood, oxygen is bound to hemoglobin, a protein found in red blood cells.
3.Oxygen is released from the mitochondria as a product of cellular respiration.
4.Carbon dioxide diffuses from the alveoli into surrounding capillaries.
5.As oxygen diffuses from the lungs into capillaries, blood becomes deoxygenated.
From which structures do oxygen molecules move from the lungs to the blood? - correct answer
✔✔Alveoli
During inhalation, - correct answer ✔✔the diaphragm and rib muscles contract
Carbon dioxide transport - correct answer ✔✔1. Carbon dioxide is released from mitochondria
2. Carbon dioxide diffuses into a capillary
3. Carbon dioxide Is carried to the lungs
4. Carbon dioxide diffuses into a alveolus
5. Air exits through the nose or mouth
Oxogen transport - correct answer ✔✔1. Oxygen diffuses from the alveoli into surropumding capillaries
2. Oxygen enters a red blood cell
, 3. Oxygen binds to a molecule of hemoglobin
4. Oxygen carried through blood vessels to a capillary
5. Oxygen diffuse from the blood to the body's tissues
Which of the following normally contains the highest concentration of oxygen? - correct answer ✔✔air
entering the respiratory system
In saltwater and freshwater environments, _____. - correct answer ✔✔the concentration of oxygen in
water is lower than in air
The human nose is involved in _____.
1. producing mucus
2. exchanging gases with the capillaries
3. filtering the air
4. gas exchange with the trachea - correct answer ✔✔filtering the air
Humans can talk and sing because they can _____.
1. tense and relax the vocal cords as air flows past them
2. regulate the flow of air through the nose
3. contract and relax the diaphragm
4. modulate the flow of air through the trachea - correct answer ✔✔1. tense and relax the vocal cords as
air flows past them
Cigarettes contain over _____ different chemicals. - correct answer ✔✔4000
About how many years after quitting smoking does it take for the risk of heart disease and death to
return to levels similar to those seen in people who never smoked? - correct answer ✔✔15
If you relax a tense abdomen during diaphragm contraction, what effect does this have on breathing? -
correct answer ✔✔It increases the vital capacity of the lungs
