metabolism.

Question 1

what is metabolism?

Answer 1

sum of all the chemical reactions in a cell or in the body.

Question 2

what are these reactions controlled by and what do many of them need?

Answer 2

enzymes and many need a transfer of energy.

Question 3

how is this energy transferred?

Answer 3

respiration.

Question 4

what is the energy used to make?

Answer 4

new molecules.

Question 5

examples of this.

Answer 5

conversion of glucose to starch. - glycogen and cellulose.
formation of lipid molecules from a molecule of glycerol and three molecules of fatty acids.
use of glucose and nitrate ions to form amino acids- used to synthesis proteins.
breakdown of excess proteins into urea for excretion.

Question 6

which organelle makes proteins from amino acids?

Answer 6

ribosomes.

Question 7

does a person with a higher percentage of muscle have a quicker or slower metabolism and why?

Answer 7

faster.
increase respiration.

Question 8

what is a property of starch that helps it to be stored in cells?

Answer 8

insoluble in water.

Question 9

when would the amount of blood to the liver increase?

Answer 9

exercising.
drinking alcohol.

Question 10

what is a metabolic rate affected by?

Answer 10

amount of activity a person does.

Question 11

what are 3 factors that may affect a persons metabolic rate?

Answer 11

muscle mass.
alcohol content.
age.