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Biology Year 10 > Bioenergetics > Flashcards

Bioenergetics Flashcards

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1
Q

Where does photosynthesis take place?

A

Inside the chloroplasts.

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2
Q

Where is chloroplasts found?

A

In plants and algae

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3
Q

What kind of reaction is photosynthesis?

A

Endothermic

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4
Q

What does endothermic mean in terms of photosynthesis?

A

It means that it requires energy for photosynthesis to occur.

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5
Q

What does chloroplast contain?

A

Chlorophyll.

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6
Q

What is the source of energy for photosynthesis?

A

Sunlight.

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7
Q

What happens to the sunlight during photosynthesis?

A

It gets trapped by a chemical called chlorophyll inside chloroplasts in plant cells.

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8
Q

What is chlorophyll?

A

A pigment that can absorb light energy.

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9
Q

What is aerobic respiration?

A

A form of respiration that uses oxygen to release energy from molecules like glucose.

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10
Q

What is the word equation for aerobic respiration?

A

Glucose + oxygen → carbon dioxide + water

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11
Q

What is anaerobic respiration?

A

A form of respiration that releases energy from molecules like glucose without using oxygen.

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12
Q

What is the word equation for anaerobic respiration in plants?

A

Glucose → ethanol + carbon dioxide

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13
Q

What is the word equation for anaerobic respiration in humans?

A

Glucose → lactic acid

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14
Q

What is cellular respiration?

A

An exothermic reaction which is continuously occurring in living cells.

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15
Q

What is inverse proportion?

A

A relationship between two values where as one value increases, the other value decreases at the same rate.

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16
Q

What is photosynthesis?

A

An endothermic reaction in which energy is transferred from the environment to the chloroplast by light.

17
Q

What is inverse square law?

A

As the distance from a light source increases, the light intensity is inversely proportional to the distance squared .

18
Q

What is the equation for inverse square law?

A

light intensity ⍺ 1/(distance from the light source)² .

19
Q

What is limiting factor?

A

A factor that limits the rate of a reaction when there is not enough of it.

20
Q

What is the word and symbol equation for photosynthesis?

A

Word: carbon dioxide + water → (light)glucose + oxygen Symbol: 6CO2(little number) + 6H2(little number)O → C6H12O6 + 6O2

20
Q

What is metabolism?

A

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

21
Q

What is oxygen debt?

A

The amount of extra oxygen the body needs after exercise to react with the accumulated lactic acid and remove it from the cells

22
Q

Describe 2 ways you could speed up photosynthesis

A

-Increase light intensity.
-Increase temperature.

23
Q

What type of energy is needed for photosynthesis?

A

Light energy

24
Q

What substance in the plant absorbs light energy?

A

Chlorophyll

25
Q

In which part of the plant cell does photosynthesis take place?

A

Chloroplasts

26
Q

Which 2 of following substances were needed in large amounts during the run?

A

-Glucose.
-Oxygen.

27
Q

Why are glucose and oxygen needed in larger amounts during the run?

A

To release more energy

Biology Year 10 (1 decks)

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