Mixed

The processes that occur in the electron transport chain are also known as oxidative phosphorylation. Suggest why this term is used

State one advantage of mitochondrial membrane being highly folded to form cristae to the electron transport chain

The oxygen taken up by organisms has an important role in aerobic respiration. Explain this role.

As part of which molecule does the oxygen taken in leave an organism after being respired

State 3 reasons for the small % of energy transferred at each trophic level

Why most food chains rarely have more than 4 trophic levels

Two advantages of using a pyramid of biomass rather than a pyramid of numbers when representing quantitative information on a food chain

How pyramid of biomass for marine ecosystem may sometimes show producers (phytoplankton) with a smaller biomass than primary consumers(zooplankton)

Units to measure biomass

Net productivity (def)

Why productivity of an agricultural ecosystem is greater than that of a natural ecosystem

What are the differences between the ways that energy is provided in a natural ecosystem and in an agricultural ecosystem

How does rearing animals intensively in small covered enclosure increase their energy conversion rate

Why keeping animals in the dark for longer periods might improve the energy-conversion rate

How many carbon molecules are there in a single molecule of pyruvate

What 2C molecule is pyruvate converted to during link reaction

In which part of the cell Krebs cycle takes place

What are the biochemical outcomes of the LD reactions

Limits on the rate of photosynthesis

How much ATP is produced during aerobic respiration

How NAD is regenerated when muscle cell respire anaerobically

How is NAD regenerated when yeast cells respire anaerobically

What is oxygen debt

The role of acetyl CoA in aerobic respiration

Why are there a limited number of trophic levels in an ecological pyramid and links in a food chain

Why is pyramid of energy the best way of representing feeding relationships between organisms in different trophic levels.

Eutrophication

Eutrophication causes:

Evolution is sometimes defined as a result of changes in the frequency of particular alleles. Explain the definition in terms of natural selection

Summarise the different stages of photosynthesis

How structure of chloroplast maximises a rate of reaction

Carotenoids

Difference between non-cyclic/ cyclic photophosphorylation