Gas Exchange and Transport Quiz

What is the main respiratory pigment in humans that transports oxygen in the blood?

• Hemoglobin

• Insulin

• Chlorophyll

• Melanin

What is the process by which air is moved into and out of the lungs in humans?

• Digestion

• breathing

• respiration

• gaseous exchange

What is the process by which water is lost from the surface of plant leaves?

• Respiration

• Transpiration

• Photosynthesis

• Evaporation

What of these factors does NOT affect the rate of transpiration in plants?

• Temperature

• humidity

• wind

• seed number

How does transpiration contribute to the movement of water in plants?

• Transpiration creates a pull on the water in the xylem, causing it to move up from the roots to the leaves.

• Transpiration has no effect on the movement of water in plants

• Transpiration pushes water down from the leaves to the roots

• Transpiration causes water to move sideways within the plant

What are the similarities and differences in the transport of gases in plants and animals?

• Plants primarily use respiratory systems like lungs while animals use stomata

• Plants use phloem for gas transport while animals use stomata

• Both use diffusion, but plants primarily use stomata while animals use respiratory systems like lungs or gills.

• Both humans and fish use lungs for gas transport

as organisms get larger gas exchange becomes more difficult because

• there is not enough oxygen in the air

• the surface area to volume ratio increases

• the surface area to volume ratio decreases

• the distance from the centre of the organism to the air decreases

what is NOT feature of a good gas exchange surface

• large SA

• Moist

• impermeable to gases

• thin

How does the concentration gradient get maintained at lung exchange surfaces?

• slow moving blood to allow time for gases to cross

• thick cell walls to allow gases to travel through

• few large alveoli so air can fit

• dense network of fast moving blood vessels

When we breath in...

• the diaphragm contracts and the external intercostals contract

• the diaphragm contracts and the abdominal muscles contract

• the diaphragm relaxes and the external intercostals contract

• the diaphragm contracts and the internal intercostals contract