Photosynthesis Review

The main purpose of photosynthesis is to...

• release oxygen for animals to breathe.

• convert light energy into chemical energy (food).

• split water into hydrogen and oxygen.

• create decaying material for mushrooms.

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NGSS.MS-LS1-6

Which of the following is considered a producer or autotroph?

• A) A shark that eats smaller fish.

• B) A lion that eats a zebra.

• C) A mushroom that gets energy from decay.

• D) A flower that gets energy from the sun.

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NGSS.MS-LS1-6

A zebra gets energy directly from the sun.

• True

• False

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Organisms that cannot make their own food are called consumers or heterotrophs.

• True

• False

The green pigment found in chloroplasts that captures sunlight is called ________________________.

• chlorophyll

• hemoglobin

• carotene

• melanin

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NGSS.MS-LS1-6

In the second stage of photosynthesis, carbon dioxide and hydrogen are used to create a sugar called ____________________.

• glucose

• starch

• cellulose

• sucrose

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NGSS.MS-LS2-3

Complete the chemical equation for photosynthesis below:

6CO2 + ​ (a)   ​ + Light Energy → C6H12O6 + ​ (b)   ​

• 6O2
• 6H2O

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What are the two main stages of photosynthesis?

• Capturing the sun's energy and making food.

• Glycolysis and fermentation.

• Electron transport chain and Krebs cycle.

• Transcription and translation.

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Where in the plant cell does the first stage of photosynthesis happen?

• In the chloroplast.

• In the mitochondria.

• In the cell wall.

• In the cytoplasm.

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NGSS.MS-LS1-6

Explain how a lion, which only eats other animals, still depends on the sun's energy for survival.

• Lions eat animals which eat plants. Plants get their energy from the sun through photosynthesis. Therefore, the energy in the lion's food ultimately comes from the sun.

• Lions absorb sunlight directly through their skin to gain energy for survival.

• Lions only need the sun for warmth, not for energy in their food chain.

• Lions get their energy from water, which is heated by the sun.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3