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A-Level Biology - OCR A > Respiration > Flashcards

Respiration Flashcards

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1
Q

Where does Glycolysis take place?

A

Cytoplasm

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2
Q

What are the 4 stages of respiration?

A

Glycolysis, Link reaction, Krebs cycle and Oxidative phosphorylation

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3
Q

What is an Autotroph?

A

Organisms that synthesise organic molecules from inorganic molecules such as CO2 and H2O

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4
Q

What is a Photoautotoph?

A

Organisms that use light as a source of energy

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5
Q

What is a heterotroph?

A

Organisms that rely on organic molecules that have been made by other organisms

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6
Q

What is Carbon Fixation?

A

The process by which CO2 is converted to sugar

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7
Q

What is Phosphorylation?

A

Adding a phosphate

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8
Q

What is Photophosphorylation?

A

Adding a phosphate using light

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9
Q

What is Photolysis?

A

Splitting of molecule using light energy

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10
Q

What is hydrolysis?

A

A reaction that breaks a chemical bond between 2 molecules using a water molcule

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11
Q

What is decarboxylation?

A

Removal of CO2 from a molecule

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12
Q

What is Dehydrogenation?

A

Removal of hydrogen from a molecule

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13
Q

What is a Redox Reaction?

A

Reactions that involve oxidation and reduction

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14
Q

What is the first step of the Calvin Cycle?

A

Carbon fixation

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15
Q

What happens in the first step of the Calvin cycle?

A

RuBP accepts a Carboxyl group, forming an unstable, intermediate, 6-carbon compound that breaks down to form 2x GP

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16
Q

What is RuBP?

A

Ribulose Bisphosphate

17
Q

What is GP?

A

Glycenerate 3-phosphate

18
Q

What is the second step of the Calvin Cycle?

A

Reduction of Glycerate 3-phosphate

19
Q

What happens in the second step of the Calvin Cycle?

A

GP is reduced using hydrogens from the reduced NADP. This makes TP

20
Q

What is TP?

A

Triose phosphate

21
Q

What is the third step of the Calvin Cycle?

A

Regeneration of Ribulose Bisphosphate

22
Q

What happens in the third step of the Calvin Cycle?

A

CO2 combines with 5-carbon CO2 acceptor RuBP which is catalysed by the enzyme rubisco which requires ATP

A-Level Biology - OCR A (7 decks)

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