Gaseous Exchange { 5 }

Question 1 of 18

1

To support _, cells take in oxygen and give out carbon dioxide by a process called _ .

Select one of the following:

aerobic respiration | cellular respiration
aerobic respiration | gaseous exchange
anaerobic respiration | gaseous exchange

Explanation

Question 2 of 18

1

Gaseous exchange -the exchange of gases between an organism and its environment- takes place by..

Select one of the following:

diffusion
osmosis
facilitated diffusion
active transport
bulk transport

Explanation

Question 3 of 18

1

Highlight the factors that determine the rate of diffusion in living things.

Select one or more of the following:

the amount of oxygen available in the blood stream only
the amount of carbon dioxide in the body
the size of the surface area available for gaseous exchange
the difference in concentration
the length of an organism
the length of the diffusion path
the size of a living thing only

Explanation

Question 4 of 18

1

The shorter the diffusion path, the lower the rate of diffusion -so the respiratory surface must be as thin as possible.

Select one of the following:

True
False

Explanation

Question 5 of 18

1

Many multicellular animals have very many of their cells too far away from the body surface to receive enough oxygen by diffusion alone.

Select one of the following:

True
False

Explanation

Question 6 of 18

1

Active organisms have an _ metabolic rate and so require more_ in their cells; mammals have specialised organs for gaseous exchange.

Select one of the following:

increased | oxygen
decreased | oxygen
increased | carbon dioxide
decreased | carbon dioxide

Explanation

Question 7 of 18

1

In mammals the respiratory surface consists of..

Select one of the following:

gut
capillaries
lungs
arteries

Explanation

Question 8 of 18

1

Since the lungs are in a protective position inside the _, air must be brought to the respiratory surface and so the lungs must be _ .

Select one of the following:

chest | freed
oesophagus | cushioned
trachea | ventilated
thorax | ventilated

Explanation

Question 9 of 18

1

A ventilation system is..

Select one of the following:

an enzyme-activated mechanism that moves air in and out of the lungs efficiently, maintaining the concentration gradient for diffusion.
a pumping mechanism that moves air in and out of the lungs efficiently, maintaining the concentration gradient for diffusion.
a pumping mechanism that moves air into the lungs efficiently, maintaining the concentration gradient for diffusion.
a pumping mechanism that moves air out of the lungs efficiently and maintains the concentration gradient for facilitated diffusion.

Explanation

Question 10 of 18

1

The lungs are housed in the thorax, an _ formed by the _ and its _ with a domed floor, the _ .

Select one of the following:

airtight | rib-cage | intercostal muscles | diaphragm
impervious | rib-cage | intercostal muscles | abdomen
upright | rib-cage | muscles | diaphragm
airtight | ribs | intercostal muscles | stomach

Explanation

Question 11 of 18

1

The internal surfaces of the thorax are lined by the..

Select one of the following:

finger-like projections, villi
double membrane
epidural membrane
pleural membrane
nuclear membrane

Explanation

Question 12 of 18

1

This membrane secretes _ which is a lubricating liquid derived from _ and protects the lungs from friction during breathing movements.

Select one of the following:

serotonin | platelets
pleural fluid | blood plasma
pleural fluid | platelets
oxytocin | platelets

Explanation

Question 13 of 18

1

The _ work together to prevent food from entering the which which connects the lungs to the _ at the rear of the mouth and runs beside the _ .

Select one of the following:

glottis and epiglottis | trachea | pharynx | oesophagus
glottis and cartilaginous flap | trachea | pharynx | oesophagus
glottis and epiglottis | oesophagus | pharynx | trachea
glottis and epiglottis | pharynx | trachea | oesophagus

Explanation

Question 14 of 18

1

Air is drawn into the alveoli when the air pressure is lower in the lungs than in the atmosphere; it is then forced out when the situation reverses.

Select one of the following:

True
False

Explanation

Question 15 of 18

1

The volume of the thorax is decreased when the ribs move up and out an the diaphragm dome is lowered.

Select one of the following:

True
False

Explanation

Question 16 of 18

1

The volume of the thorax is decreased by the diaphragm muscles relaxing and becoming more dome shaped by pressure from below; the ribs now move in and down as the intercostal muscles relax.

Select one of the following:

True
False

Explanation

Question 17 of 18

1

The lung tissue consists of the alveoli, arranged in clusters and served by a bronchiole. They have __ and a _ system wraps around the clusters of them and is connected to the _ and is drained by a branch of the _ .

Select one of the following:

integral walls | capillary | pulmonary artery | pulmonary vein
elastic connective tissue | capillary | pulmonary artery | pulmonary vein
elastic connective tissue | capillary | pulmonary vein | pulmonary artery

Explanation

Question 18 of 18

1

Highlight the advantageous features of alveoli.

Select one or more of the following:

thick walls -prevent pathogens from crossing into blood stream
Large surface area
only artery supply to alveoli
Thin walls -short diffusion path
compact small surface area
capillary supply to alveoli
surface film of moisture

	Created by cloud.berry over 10 years ago

Chapter 7, Part 5.

Gaseous Exchange { 5 }

Question 1 of 18

To support ___, cells take in oxygen and give out carbon dioxide by a process called ___ .

Select one of the following:

Explanation

Question 2 of 18

Gaseous exchange -the exchange of gases between an organism and its environment- takes place by..

Select one of the following:

Explanation

Question 3 of 18

Highlight the factors that determine the rate of diffusion in living things.

Select one or more of the following:

Explanation

Question 4 of 18

The shorter the diffusion path, the lower the rate of diffusion -so the respiratory surface must be as thin as possible.

Select one of the following:

Explanation

Question 5 of 18

Many multicellular animals have very many of their cells too far away from the body surface to receive enough oxygen by diffusion alone.

Select one of the following:

Explanation

Question 6 of 18

Active organisms have an ___ metabolic rate and so require more___ in their cells; mammals have specialised organs for gaseous exchange.

Select one of the following:

Explanation

Question 7 of 18

In mammals the respiratory surface consists of..

Select one of the following:

Explanation

Question 8 of 18

Since the lungs are in a protective position inside the ___, air must be brought to the respiratory surface and so the lungs must be ___ .

Select one of the following:

Explanation

Question 9 of 18

A ventilation system is..

Select one of the following:

Explanation

Question 10 of 18

The lungs are housed in the thorax, an ___ formed by the ___ and its ___ with a domed floor, the ___ .

Select one of the following:

Explanation

Question 11 of 18

The internal surfaces of the thorax are lined by the..

Select one of the following:

Explanation

Question 12 of 18

This membrane secretes ___ which is a lubricating liquid derived from ___ and protects the lungs from friction during breathing movements.

Select one of the following:

Explanation

Question 13 of 18

The ___ work together to prevent food from entering the __ which which connects the lungs to the ___ at the rear of the mouth and runs beside the ___ .

Select one of the following:

Explanation

Question 14 of 18

Air is drawn into the alveoli when the air pressure is lower in the lungs than in the atmosphere; it is then forced out when the situation reverses.

Select one of the following:

Explanation

Question 15 of 18

The volume of the thorax is decreased when the ribs move up and out an the diaphragm dome is lowered.

Select one of the following:

Explanation

Question 16 of 18

The volume of the thorax is decreased by the diaphragm muscles relaxing and becoming more dome shaped by pressure from below; the ribs now move in and down as the intercostal muscles relax.

Select one of the following:

Explanation

Question 17 of 18

The lung tissue consists of the alveoli, arranged in clusters and served by a bronchiole. They have ____ and a ___ system wraps around the clusters of them and is connected to the ___ and is drained by a branch of the ___ .

Select one of the following:

Explanation

Question 18 of 18

Highlight the advantageous features of alveoli.

Select one or more of the following:

Explanation

To support _, cells take in oxygen and give out carbon dioxide by a process called _ .

Active organisms have an _ metabolic rate and so require more_ in their cells; mammals have specialised organs for gaseous exchange.

Since the lungs are in a protective position inside the _, air must be brought to the respiratory surface and so the lungs must be _ .

The lungs are housed in the thorax, an _ formed by the _ and its _ with a domed floor, the _ .

This membrane secretes _ which is a lubricating liquid derived from _ and protects the lungs from friction during breathing movements.

The _ work together to prevent food from entering the which which connects the lungs to the _ at the rear of the mouth and runs beside the _ .

The lung tissue consists of the alveoli, arranged in clusters and served by a bronchiole. They have __ and a _ system wraps around the clusters of them and is connected to the _ and is drained by a branch of the _ .