Unit 2: Respiration and Photosynthesis Flashcards

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1
Q

What is the equation for respiration?

A

O2+glucose—CO2+water+energy

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2
Q

What is the equation for photosynthesis?

A

CO2+water—-glucose +O2

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3
Q

In darkness (no light) what can only take place?

A

Respiration can only take place.
Carbon dioxide levels will increase.

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4
Q

In low light conditions (eg. dawn or dusk) what will occur?

A

Respiration occurs, but now because of the light, photosynthesis can also occur.
But it does not happen at a fast rate because of the low light level. Rates of photosynthesis and respiration are equal.
Carbon dioxide levels will be level - this is known as the compensation point, and there is no net gas exchange

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5
Q

In bright light conditions what occurs?

A

Respiration still occurs but photosynthesis happens at a much faster rate. carbon dioxide levels will decrease.

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6
Q

What can be used to determine the movement of carbon dioxide and oxygen into and out of plants?

A

Hydrogen carbonate indicator

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7
Q

What colour is hydrogen carbonate indicator in normal atmospheric carbon dioxide levels?

A

Red

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8
Q

What colour is hydrogen carbonate indicator if there is an increase in carbon dioxide levels?

A

Yellow

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9
Q

What colour is hydrogen carbonate indicator if carbon dioxide levels decrease?

A

Purple

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