unit 3 aos 2

Question 1

what is an enzyme
do more ezyme

Answer 1

• organic catalysts- speed up chemical reactions

Question 2

c3 photosynthesis

Question 3

c4 photosynthesis

Answer 3

• in arid environments (hot)
• enzyme pepcase to stop photorespiration (using oxygen mole instead of co2= no glucose)
  -( kranz structure) structural changes to leaf
• calvin cycle occurs in bundle sheath cells, pepcase(which is carboxylase) turns pep and co2 into malate
  -pepcase breaks down co2- gets sent to bundle sheath cells through plasmodesmata

Question 4

CAM photosynthesis

Answer 4

-open stomata during night to reduce water loss by transpiration
- stores co2 as malic acid within vacuoles
- uses stored carbon for photosynthesis during the day when light is available

Question 5

rubisco and c3 plants

Answer 5

• carboxylase/oxygenase
  -ability to use oxygen instead of co2 when under high light intensity and temperatures
  -photorespiration doesn’t produce glucose or ATP

Question 6

factors that affect photosynthesis

Answer 6

• light availability
  -water availability
• temp
  -ph
  co2

Question 7

light availability- photo

Answer 7

plants need sunlight for photosynthesis so amount can impact rate
- green wavelength decreases photo

Question 8

temp/ph photo

Answer 8

• rate is best when temp matches the enzymes optimal ph

Question 9

what is the chemical equation for photo

Answer 9

6co2+ 12h2o light- c612ho6+ 6o2+6ho

Question 10

chem equation for glycolisis

Question 11

chem eqn krebs

Question 12

chem eqn etc

Question 13

chem eqn glucose

Answer 13

c6h12o6

Question 14

PHOTOSYNTHESIS

Answer 14

CAPTURES ENERG IN SUNLIGHT AND AND STORES I AS GLUCOSE

Question 15

light dep location and input output

Answer 15

thylakoids membrane
- adp +pi
-NADP+
H2o

out
-o2
- atp
nadh

Question 16

light indep location and inputs and outputs

Answer 16

• stroma
  -in atp, nadph, co2
  out- h2o, glucose, adp+pi, water

Question 17

glycolisis inputs and outputs

Answer 17

i- glucose
o- 2 atp , 2 pyruvate, 2 NADH

Question 18

krebs inputs and outputs

Answer 18

i- acetyl co a, adp+pi, NAD+ H, FAD+ H
o- carbon dioxide, atp,NADH, FADH

Question 19

etc inputs and outputs

Answer 19

i- NADH, FADH, 26 or 28 Adp+ Pi, oxygen
o- water
- 26 or 28 atp
Nad+ H
FAD+H

Question 20

Anaerobic fermentation inputs and outputs+ stages

Answer 20

i - glucose, adp

Question 21

what is an affinity

Answer 21

atraction between active site and substrate