Key Terms (AQA A-Level Biology): Quizzes

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5. Energy Transfers In & Between Organisms: Definitions (A Level only)
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What is ATP described as in living cells?

Universal energy currency

What does anaerobic respiration produce in animals?

Lactate

Where in the chloroplast does the light-independent reaction occur?

Stroma

What is converted during denitrification?

Nitrate ions to nitrogen gas

What is the typical efficiency of energy transfer between trophic levels?

Approximately 10%

Which products are generated by the Krebs cycle?

Reduced NAD, reduced FAD, ATP and CO2CO_2

What drives ATP formation through ATP synthase?

Protons flowing down concentration gradient

What reaction does the enzyme rubisco catalyse?

Ribulose bisphosphate and CO2CO_2

How is net primary productivity (NPP) calculated?

NPP=GPPRNPP = GPP - R

Where does the link reaction occur in aerobic respiration?

Mitochondrial matrix

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