BIO 1040 TEST QUESTIONS AND ANSWERS
LATEST UPDATE
During gas exchange, where does the CO2, which is released from the lungs,
originate?
It is a by-product of digestion.
It is a waste product of cellular respiration.
It is in the air that we breathe.
It is a waste product of protein breakdown.
It is a waste product of cellular respiration.
The role of gas exchange is to take in the oxygen needed as the last electron acceptor
during cellular respiration and to release the carbon dioxide produced during cellular
respiration.
Breathing is the _____.
transportation of gases by the circulatory system
exchange of gases between the circulatory system and interstitial fluid (and then
body tissues)
exchange of gases in the mitochondria
exchange of gases in the lungs
exchange of gases in the lungs
In animals with lungs, this is the first stage of gas exchange.
A _____________ is usually a thin, moist layer of cells that provides a large
surface area for gas exchange with the environment.
respiratory surface
Gas exchange between an organism and its environment takes place by ________
diffusion
Earthworms are _______________-their entire outer body surface functions in gas
exchange.
skin-breathers
Aquatic animals often exchange gases through _______, which are extensions of
the body surface
,gills
_______________ are the respiratory structures of insects. These networks of
finely branched air tubes extend throughout the body, allowing for gas exchange
directly with body cells.
tracheal systems
Most terrestrial vertebrates have _______, which are internal, subdivided sacs
lined with moist epithelium.
lungs
Except in insects and some small or very thin animals, gases are transported
through an animal's body by a ___________
circulatory system
In earthworms, gas exchange occurs in the _____.
skin
Respiratory surfaces are all _____.
moist
external
internal
a series of air "tubes"
moist
All respiratory surfaces must be moist in order to prevent cells from drying and to
provide a medium in which gases can dissolve.
Which of the following organisms has no specialized respiratory structures?
clams
earthworm
ant
salmon
earthworm
In order for gas exchange to occur, a respiratory surface must be _____.
have less surface area
moist and glandular
thin and moist
,thick, dry, and covered with hair
thin and moist
Carbon dioxide and oxygen must be dissolved in water to diffuse through the thin cells
of a respiratory surface.
Fish have gill lamellae, whereas humans have _____.
a diaphragm
a trachea
alveoli
bronchioles
alveoli
In fish, what is the advantage of countercurrent exchange in the gills?
It increases the flow of water over the gills.
It helps retain carbon dioxide in the blood.
It removes a high percentage of oxygen from water.
It helps keep fish cooler.
It removes a high percentage of oxygen from water.
More than 80% of oxygen is removed from the water as a result of countercurrent
exchange.
Ventilation increases the flow of water, and thus oxygen, over the gills. This can occur
by a pumping mechanism or, in swimming fishes, by the fish simply opening their
mouths.
Countercurrent exchange, which occurs in the gills of fish, _____.
means that blood and water flow in the same direction
speeds up the flow of water through the gills
interferes with the efficient absorption of oxygen
maintains a concentration gradient that enhances diffusion of O2
maintains a concentration gradient that enhances diffusion of O2
This arrangement permits gas exchange along the entire length of the gill surface.
, Butterflies have what kind of gas exchange system?
tracheal
lungs
skin
gills
tracheal
The journey from aquatic to terrestrial environments required adaptations. Which
animals supplement the gas exchange that occurs through the lungs with gas
exchange through the skin?
insects
amphibians
birds
fish
amphibians
Amphibians have small lungs and rely heavily on the diffusion of gases across their
skin.
Voice sounds are produced by the _____.
trachea
diaphragm
bronchioles
larynx
lungs
larynx
The primary functions of the _____ are to warm, filter, and humidify air.
lungs
trachea
LATEST UPDATE
During gas exchange, where does the CO2, which is released from the lungs,
originate?
It is a by-product of digestion.
It is a waste product of cellular respiration.
It is in the air that we breathe.
It is a waste product of protein breakdown.
It is a waste product of cellular respiration.
The role of gas exchange is to take in the oxygen needed as the last electron acceptor
during cellular respiration and to release the carbon dioxide produced during cellular
respiration.
Breathing is the _____.
transportation of gases by the circulatory system
exchange of gases between the circulatory system and interstitial fluid (and then
body tissues)
exchange of gases in the mitochondria
exchange of gases in the lungs
exchange of gases in the lungs
In animals with lungs, this is the first stage of gas exchange.
A _____________ is usually a thin, moist layer of cells that provides a large
surface area for gas exchange with the environment.
respiratory surface
Gas exchange between an organism and its environment takes place by ________
diffusion
Earthworms are _______________-their entire outer body surface functions in gas
exchange.
skin-breathers
Aquatic animals often exchange gases through _______, which are extensions of
the body surface
,gills
_______________ are the respiratory structures of insects. These networks of
finely branched air tubes extend throughout the body, allowing for gas exchange
directly with body cells.
tracheal systems
Most terrestrial vertebrates have _______, which are internal, subdivided sacs
lined with moist epithelium.
lungs
Except in insects and some small or very thin animals, gases are transported
through an animal's body by a ___________
circulatory system
In earthworms, gas exchange occurs in the _____.
skin
Respiratory surfaces are all _____.
moist
external
internal
a series of air "tubes"
moist
All respiratory surfaces must be moist in order to prevent cells from drying and to
provide a medium in which gases can dissolve.
Which of the following organisms has no specialized respiratory structures?
clams
earthworm
ant
salmon
earthworm
In order for gas exchange to occur, a respiratory surface must be _____.
have less surface area
moist and glandular
thin and moist
,thick, dry, and covered with hair
thin and moist
Carbon dioxide and oxygen must be dissolved in water to diffuse through the thin cells
of a respiratory surface.
Fish have gill lamellae, whereas humans have _____.
a diaphragm
a trachea
alveoli
bronchioles
alveoli
In fish, what is the advantage of countercurrent exchange in the gills?
It increases the flow of water over the gills.
It helps retain carbon dioxide in the blood.
It removes a high percentage of oxygen from water.
It helps keep fish cooler.
It removes a high percentage of oxygen from water.
More than 80% of oxygen is removed from the water as a result of countercurrent
exchange.
Ventilation increases the flow of water, and thus oxygen, over the gills. This can occur
by a pumping mechanism or, in swimming fishes, by the fish simply opening their
mouths.
Countercurrent exchange, which occurs in the gills of fish, _____.
means that blood and water flow in the same direction
speeds up the flow of water through the gills
interferes with the efficient absorption of oxygen
maintains a concentration gradient that enhances diffusion of O2
maintains a concentration gradient that enhances diffusion of O2
This arrangement permits gas exchange along the entire length of the gill surface.
, Butterflies have what kind of gas exchange system?
tracheal
lungs
skin
gills
tracheal
The journey from aquatic to terrestrial environments required adaptations. Which
animals supplement the gas exchange that occurs through the lungs with gas
exchange through the skin?
insects
amphibians
birds
fish
amphibians
Amphibians have small lungs and rely heavily on the diffusion of gases across their
skin.
Voice sounds are produced by the _____.
trachea
diaphragm
bronchioles
larynx
lungs
larynx
The primary functions of the _____ are to warm, filter, and humidify air.
lungs
trachea
