Biology Photosynthesis Review

Photosynthesis Review

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Multiple Choice

What is the source of energy for photosynthesis?

• carbohydrates-chemical

• sunlight

• television-electrical

Photosynthesis

In words

carbon dioxide + water _-------^sunlight_-----> sugars + Oxygen

In symbols

6CO₂ + 6H₂O-----^sunlight-----> C₆H₁₂O₆ + 6O₂

Multiple Choice

Which of the following is the correct equation for PHOTOSYNTHESIS?

• carbon dioxide + water + light --> oxygen + glucose

• _{carbon dioxide} + glucose + water --> oxygen _{+ light}

• oxygen + water --> carbon dioxide + glucose + light

Inputs (REACTANTS) of Photosynthesis

• Carbon Dioxide

• Water

• Sunlight

Multiple Choice

What are the reactants (what's needed) for photosynthesis?

• glucose and oxygen

• light, water, and carbon dioxide

Outputs (PRODUCTS) of Photosynthesis

• Sugars (Carbohydrates)

• Oxygen

Multiple Choice

What gas is released by plants during photosynthesis?

• hydrogen

• carbon dioxide

• oxygen

Multiple Choice

Which choice correctly shows the gases that enter and exit plants during photosynthesis?

• Enter: Oxygen

  Exit: Carbon dioxide

• Enter: Water vapor

  Exit: Glucose

• Enter: Carbon dioxide

  Exit: Oxygen

Where do the reactants come from...

• The sun produces the light that the plant needs.

• Is a product that humans produce in the air

• The water comes from the soil

Multiple Choice

Plants need ________ for photosynthesis

• oxygen

• soil

• carbon dioxide

• sugar

Multiple Choice

What is the main purpose of photosynthesis?

• To make food

• To absorb sunlight

• To release oxygen

Multiple Choice

Which of the following are reactants (input) of photosynthesis?

• CO₂ and H₂O

• O₂

• None of the above

Where does the products end up...

• The plants waste is Oxygen-it creates the air that we need.

• Plants produce sugars to create energy for other processes.
  

Multiple Choice

What are the products of photosynthesis?

• water and carbon dioxide

• oxygen and glucose (sugar)

• oxygen and water

Multiple Choice

What is the chemical formula for water?

• H₂O

• HO₂

• CHO₂

Multiple Choice

What is the chemical formula for carbon dioxide?

• C₂O

• CO₂

• CHO₂

Multiple Choice

6CO₂ + 6H₂0 + light energy -> C₆H₁₂O₆ + 6O₂

_{In this chemcial equation, the highlight red is called the ______.}

• product

• reactant

Multiple Choice

what's another name for sugar that is used in photosynthesis?

• glucose

• carbon dioxide