biology - respiration and breathing

Question 1

What is the difference between breathing and respiration?

Answer 1

breathing is a physical reaction of getting air in and out of the lungs
respiration is a chemical reaction that releases energy

Question 2

where does respiration occur?

Answer 2

the mitochondria

Question 3

what are some adaptions of the red blood cell?

Answer 3

biconcave disk – increases surface area to store oxygen
haemoglobin – makes the cell red, protein that carries oxygen.
no nucleus – more space for haemoglobin

Question 4

do arteries carry blood to or away from the heart?

Answer 4

away

Question 5

which way do veins carry blood?

Answer 5

back to the heart

Question 6

what is aerobic respiration?

Answer 6

Aerobic respiration occurs in the presence of oxygen and in most cells most of the time.

Question 7

what is anaerobic respiration?

Answer 7

Anaerobic respiration occurs without oxygen and much less frequently than aerobic respiration.

Question 8

glucose —

Answer 8

— lactic acid (this is anaerobic respiration)