B2.15 Aerobic Respiration

Question 1

What is diffusion?

Answer 1

The movement of particles from an area of high concentration to an area of lower concentration

Question 2

How does aerobic respiration occur?

Answer 2

Oxygen is used to release energy from molecules such as glucose. The glucose and oxygen are converted into carbon dioxide and water and energy is released for use in the cell

Question 3

Describe gas exchange?

Answer 3

Process in which there is a high concentration of carbon dioxide and low concentration of oxygen that enters through the blood to the rest of the body. The large concentration of carbon dioxide diffuses from the blood to the alveoli and the large concentration of oxygen from the alveoli diffuses to the blood leaving the blood with a higher concentration of oxygen

Question 4

Explain how the circulatory system facilitates respiration

Answer 4

Glucose, carbon dioxide and oxygen move between respiring cells and tiny blood vessels called capillaries by diffusion. Diffusion occurs when particles of a substance spreads out, moving from an area of high concentration to lower concentration. Particles diffuse down a concentration gradient.

Question 5

What is respiration?

Answer 5

A process used by living organisms that releases the energy in organic molecules.