light phase

Question 1

describe the process of photolysis

Answer 1

light energy is trapped by chlorophyll and used for:
-chemical energy becomes part of electrons
-the energy of these electrons is used to split water into hydrogen ions and oxygen molecules
-oxygen leaves the chloroplast as a waste product of photosynthesis and diffuses out the leaf into the atmosphere

Question 2

what is phosphorylation

Answer 2

when energy used to combine a phosphate group with ADP to form ATP (an energy carrier)

Question 3

what is oxidation

Answer 3

loss of energy or electrons

Question 4

what is reduction

Answer 4

gain of energy or electrons

Question 5

energy is carried by?

Answer 5

ATP
NADP

Question 6

ATP stands for?

Answer 6

adenosine triphosphate

Question 7

what is ATP?

Answer 7

a large molecule which is the energy carrier in the cell

Question 8

ATP is a _____?

Answer 8

nucleotide:
-sugar - ribose
-nitrogenous base - adenine
-phosphate

Question 9

what does the bond between phosphates in ATP contain?

Answer 9

much energy, i.e. energy-rich bond

Question 10

what happens if a phosphate bond breaks in ATP?

Answer 10

energy is released into the cell

Question 11

what is the outcome of dephosphorylation (removing a phosphate from ATP)?

Answer 11

-ADP (adenosine diphosphate) is formed
-outcome is ADP + Pi (1 phosphate) + energy

Question 12

what is the outcome of phosphorylation?

Answer 12

-ADP + Pi + energy = ATP

Question 13

ATP - energy for working cells =

Answer 13

ADP + P

Question 14

ADP + P + energy from food =

Answer 14

ATP

Question 15

what is released when ATP is converted to ADP

Answer 15

energy