Topic 5

Question 1

describe the structure of chloroplast in their role for photosynthesis?

Answer 1

compartmentalisation from the cytoplasm
Stroma is the site of carbon fixation
thylakoid membrane site of the light-dependent reaction
contains chlorophyll and ATP synthase

Question 2

what is chemosmosis?

Answer 2

the movement of hydrogen ions through ATP synthase

in the membrane down their electrochemical gradient.

Question 3

what is primary succession?

Answer 3

open water or bare rock
rock goes through weathering pioneer species such as algae and lichens break up rock into dead organic material
conditions ideal for windblown mosses
built-up mosses allow the soil to hold water so seeds can germinate and survive in these conditions
taller plants compete colonise
one species outcompete others and become dominant
Oakland
as succession progresses the number of niches and species increases but once the climax community reached, reduction in biodiversity

Question 4

what is GPP?

Answer 4

ate at which energy is incorporated into an organic molecule

Question 5

What is NPP

Answer 5

the energy provided to the next trophic by an ecosystem and in the form of biomass

Question 6

what is the equation that links GPP and NPP?

Answer 6

GPP=NPP-R