Respiration and Metabolism

Question 1

What is respiration?

Answer 1

The process of transferring energy from glucose which occurs in every living cell

Question 2

What are 3 ways that organisms use energy from glucose?

Answer 2

•to maintain body temperature
•to build larger molecules from smaller ones
•for muscle contraction

Question 3

Give examples of some metabolic reactions where larger molecules are built from smaller ones:

Answer 3

•glucose molecules joining together to form starch(in plant cells)
•glucose molecules joining together to form glycogen (in animal cells)
• lipid molecules each made from 1x glycerol and 3x fatty acids
•when glucose combines with nitrates to make amino acids to form proteins

Question 4

Give examples of some metabolic reactions where larger molecules are broken down into smaller ones:

Answer 4

•when glucose is broken down in respiration
•when excess protein is broken down to produce urea

Question 5

What is metabolism?

Answer 5

The sum of all reactions that happen in a cell or the body

Question 6

What type of reaction is respiration?

Answer 6

Exothermic

Question 7

What is an exothermic reaction??

Answer 7

A reaction that transfer energy to the environment

Question 8

What is respiration controlled by?

Answer 8

Enzymes