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Biology > Bioenergetics > Flashcards

Bioenergetics Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

What is photosynthesis?

A

Photosynthesis is a chemical reaction which takes place in
plants.

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2
Q

What is the equation for photosynthesis?

A

Carbon dioxide + Water –> Glucose + Oxygen.

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3
Q

What absorbs light?

A

Chlorophyll.

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4
Q

Is photosynthesis and endothermic or exothermic reaction?

A

Endothermic.

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5
Q

Where does photosynthesis take place?

A

In the chloroplasts.

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6
Q

What are chloroplasts?

A

Small organelles found in plant cells.

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7
Q

What is a limiting factor?

A

Something which stops the photosynthesis reaction from occurring at a faster rate.

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8
Q

How do plants aqquire carbon dioxide?

A

Via diffusion through the stomata of their leaves.

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9
Q

What is glucose made in photosynthesis used for?

A

Respiration.

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10
Q

What are the 3 limiting factors?

A

Temperature, light intensity and carbon dioxide.

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11
Q

What will increasing the temperature of the surroundings do?

A

Increase the rate of reaction.

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12
Q

What will increasing light intensity and carbon dioxide levels do?

A

They will increase the rate of the reaction.

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13
Q

What was the independent variable in the effect of light intensity on photosynthesis RP?

A

The light intensity.

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14
Q

What was the dependent variable in the effect of light intensity on photosynthesis RP?

A

The amount of bubbles produced.

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15
Q

What was the control variable in the effect of light intensity on photosynthesis RP?

A

Keeping the same amount of time/ same amount of pondweed.

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16
Q

When is light intensity a limiting factor usually?

A

At night.

17
Q

When is temperature a limiting factor?

A

In winter.

18
Q

What is respiration?

A

The chemical reaction which occurs inside the mitochondria of all living cells to release energy for living functions and processes.

19
Q

Is respiration endothermic or exothermic?

A

Respiration is an exothermic reaction.

20
Q

Describe anaerobic respiration.

A

In anaerobic respiration, the glucose is not completely oxidised, so there is less energy released than in aerobic respiration.

21
Q

What produces lactic acid?

A

When oxidation of glucose is incomplete.

22
Q

What can built up lactic acid result in?

A

Oxygen debt.

23
Q

What is metabolism?

A

The combination of all the reactions in a cell or in the body.

24
Q

How is lactic acid transported?

A

Via the bloodstream to the liver.

25
Q

What is oxygen debt?

A

The amount of oxygen required by the body to convert lactic acid back into glucose.

Biology (7 decks)

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