5A Photosynthesis, Respiration and ATP

Question 1

Photosynthesis Equation

Answer 1

6CO2 + 6H2O + Energy -> C6H12O6 + 6O2

Question 2

Define metabolic processes

Answer 2

a series of small reactions controlled by enzymes eg photosynthesis and respiration

Question 3

Define phosphorylation

Answer 3

adding phosphate to a molecule eg ADP is phosphorylation to ATP

Question 4

Define photophosphorylation

Answer 4

adding phosphate to a molecule using light

Question 5

define photolysis

Answer 5

the splitting of a molecule using light energy

Question 6

define photoionisation

Answer 6

when light energy excites electrons in an atom or molecule, giving them more energy causing them to be released. The release of the electrons causes the atom or molecule to become a positively charged ion

Question 7

define hydrolysis

Answer 7

the splitting of a molecule using water

Question 8

Define varboxylation

Answer 8

the removal of carbon dioxide from a molecule

Question 9

Define dehydrogenation

Answer 9

the removal of hydrogen from a molecule

Question 10

Define redox reactions

Answer 10

reactions that involve reduction and oxidation
Reduction is gain of electrons
Oxidation is loss of electrons

Question 11

Define coenzyme

Answer 11

a molecule that aids the function of an enzyme

Question 12

How do coenzymes work

Answer 12

they transfer a chemical group from one molecule to another

Question 13

Examples of coenzymes used in photosynthesis are

Answer 13

NADP, it transfers hydrogen from one molecule to another. It can reduce or oxidise a molecule.