Respiration

Question 1

Why do organisms need energy

Answer 1

To contract the muscles of animals, allowing them to move.
Homeostatis - To keep the body temperature of warm-blooded animals (mammals and birds) relatively constant.
To make larger molecules from smaller molecules. For example:
Glucose molecules can be joined together to produce starch (in plants).
Proteins can be made from amino acids in plants and animals.

Question 2

What is cellular respiration?

(releases energy)

Answer 2

It is a universal process
Respiration happens in every cell of the living body

Question 3

Aerobic respiration

Answer 3

Produces carbon dioxide and water

Aerobic respiration just means “with oxygen” and it’s the most efficient way to transfer energy from glucose

Question 4

Anaerobic respiration

(without oxygen)

Answer 4

Produces lactic acid (animals).
During intense exercise, when cells run out of oxygen for our muscles for aerobic respiration.
It transfers less energy than aerobic respiration so it is less efficient.
In anaerobic respiration, the glucose is only partially broken down, and lactic acid is also produced
The lactic acid builds up in the muscles - it gets painful and leads to cramps

Question 5

Equation for areobic respiration

Answer 5

Glucose + oxygen → carbon dioxide+water

Question 6

Equation for anaerobic respitaton

Answer 6

Glucose → Lactic acid

Question 7

Anaerobic respiration in plants

Answer 7

Plants can repire without oxygen too, but they produce ethanol (alcohol) and Co2 instead of lactic acid

Question 8

Anaerobic respiration word equation in plants

Answer 8

Glucose→ethanol+carbon dioxide

Question 9

What does metabolism mean ?

Question 10

What is respiration?

Answer 10

The process of transferring (releasing) energy from the breakdown of organic compounds (usually glucose)

It goes on in every cell of all living organisms-and happen continuously