topic4 bioenergentics

Question 1

photo synthesis equation

Answer 1

H20 + Co2 -> C6H12O6+ O2

Question 2

how do plants use glucose

Answer 2

1. use in resp
2. many join-> starch = insoluble carb, stored
3. many join-> cellulose= add strength to cell wall
4. make lipids= fats/oils stored
5. make pro = glucose + nitrates -> aa-> many join = pro

Question 3

where do Co2 and water enter plants

Answer 3

stomata
roots-> xylem

Question 4

what happens to waste oxygen in plants

Answer 4

animals and microorganisms get it
the plant can also breathe

Question 5

effects on light intensity on photosynthesis

Answer 5

as light increases ps increases until limiting factor

Question 6

effects of temp on photosynthesis rate

Answer 6

temp increases, ps rate increases
optimum temp
enz denatures

Question 7

white light

Answer 7

green blue red

Question 8

how r greenhouses adapted

Answer 8

increase growth of crop/plants
- glass= max light
-position plants
-artificial lighting + optimum wavelength
Co2= paraffin heater / factory waste
(high = toxic)
spray water= keep humidity high
hydroponic = mineral ions
regulate temp

Question 9

why are plants good for environment

Answer 9

remove co2 from env green house gas-> global warming

Question 10

is photosynthesis endo or exo

Answer 10

endo takes in energy from sun

Question 11

experiment photosynthesis

Answer 11

Ps factors= light intensity, temp , plant amount
distance lamp by 5cm
count bubbles for 1 minute of o2
I= what are you changing and how
D= what are you measuring and how
C= what e u keeping the same
3 repeats - discard anomaly + calc mean accurate control variables and fair test

Question 12

what does light do to photosynthesis

Answer 12

give sit light energy

Question 13

what does temp do to photosynthesis graph

Answer 13

temp increases= more E for reaction (collisions/enz) peak/optimum= max rate PS
Hot= enz denature - active site changes shape
no longer complementary to substrate