H closer - transport 11.15.23

Front

What effect does an increase in temperature have on diffusion?

Back

It speeds up diffusion.

Front

What is the driving force for diffusion of oxygen across the cells of a respiratory organ?

Back

The difference in partial pressure of oxygen in the environment and in the blood.

Front

What are the tiny pores present on the surface of leaves for gas exchange called?

Back

Stomata.

Front

Define diffusion.

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is the term for the movement of oxygen and carbon dioxide across a membrane?

Back

Gas exchange.

Front

What is the primary function of stomata in plants?

Back

To facilitate gas exchange by allowing oxygen and carbon dioxide to enter and exit.

Front

How does temperature affect the rate of diffusion?

Back

Higher temperatures increase the kinetic energy of molecules, leading to faster diffusion.

Front

What is the role of partial pressure in gas exchange?

Back

Gas exchange occurs due to differences in partial pressure, allowing gases to move from areas of higher to lower pressure.

Front

What is respiration in the context of gas exchange?

Back

Respiration is the process of taking in oxygen and expelling carbon dioxide, involving gas exchange in the lungs.

Front

What is the difference between ventilation and gas exchange?

Back

Ventilation is the movement of air in and out of the lungs, while gas exchange is the actual transfer of gases between the air and blood.