Metabolism

Question 1

Why do living things need to constantly make new molecules? (3 things)

Answer 1

For growth+ repair or replace

Question 2

Where do the raw materials for the molecules we make come from?

Answer 2

Come from the food we eat and digest

Question 3

How do the products of digestion help in making new molecules?

Answer 3

The products of digestion are put back together inside our cells to make the molecules we need

Question 4

What is metabolism?

Answer 4

The sum of all the chemical reactions happening in our body

Question 5

What are 5 chemical reactions that sum up our metabolism?

Answer 5

• the conversion of glucose to starch, glycogen to cellulose
• the formation of lipids
• the formation of amino acids and proteins
• the break down of glucose during respiration
• the break down of excess proteins to form urea for excretion

Question 6

What is glucose an example of?

Answer 6

MONOSACCHARIDE (structure as a simple sugar) and a primary energy source of cells

Question 7

What are 6 ways metabolism is affected?

Answer 7

• age
• muscle mass
• sex (male or female)
• body size
• activity levels
• hormones