B4: METABOLISM Flashcards
1
Q
What is metabolism?
A
the sum of all the reactions in a cell/the body (all controlled by enzymes)
2
Q
What is metabolic rate?
A
the rate of all chemical reactions in body
3
Q
What are 2 types of metabolic reactions?
A
-synthesising larger molecules
-breaking down larger molecules
4
Q
What are examples of synthesising larger molecules?
A
-glucose –> carbohydrates (starch in plant cells, glycogen in animal cells, cellulose to make cell walls in plant cells)
-1glycerol + 3 fatty acids –> lipid molecules
-amino acids –> proteins
-glucose + nitrate ions –> amino acids –> proteins
5
Q
What are examples of breaking down larger molecules?
A
-respiration
-digestion
-urea