intro to metabolism

Question 1

define metabolism

Answer 1

the sum of physical and chemical processes in an organism by which its material substances are produced, maintained and destroyed and by which energy is made available

Question 2

where does energy on the Earth come from?

Answer 2

the Sun and bacteria

Question 3

define food

Answer 3

biofuel used by organisms to acquire energy for internal living processes

Question 4

name some complex organic food molecules

Answer 4

sugars
fats
proteins

Question 5

why are complex organic food molecules rich sources of energy?

Answer 5

energy used to make the molecules are stored in their chemical bonds

Question 6

how do cells release the energy stored in their food molecules?

Answer 6

a series of oxidation reactions

Question 7

how is energy released from oxidation reactions stored?

Answer 7

ATP

NADH

Question 8

how can metabolic problems in patients be identified?

Answer 8

examining blood, faeces and urine