StudyGde

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Name:

StudyGde

Modified True/False

Indicate whether the sentence or statement is true or false. If false, change the identified word or phrase to make the sentence or statement true.

Plants use energy from the sun to produce carbon dioxide and sugars. _________________________

A heterotroph is an organism that cannot make its own food. _________________________

Photosynthesis and respiration form a cycle that keeps the levels of water and carbon dioxide fairly constant in the atmosphere. _________________________

The raw materials for respiration are the opposite of the end products for photosynthesis. _________________________

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

What happens during photosynthesis?

a.	The cell uses oxygen to make food.
b.	The cell uses the energy in sunlight to make food.
c.	The cell uses glucose to make oxygen.
d.	The cell uses the energy in sunlight to make carbon dioxide.

What product of photosynthesis do most living things need to survive?

a.	water
b.	oxygen
c.	chlorophyll
d.	carbon dioxide

What happens during respiration?

a.	Oxygen is released into the air.
b.	Glucose is broken down, releasing energy.
c.	Carbohydrates are released into the bloodstream.
d.	Water and carbon dioxide are converted into energy.

The stage of respiration that releases most of the energy in glucose occurs in the

a.	nucleus.
b.	chloroplast.
c.	cytoplasm.
d.	mitochondria.

How are photosynthesis and respiration related?

a.	They have opposite equations.
b.	They have the same equation.
c.	They both produce carbon dioxide.
d.	They both produce oxygen.

10.

What captures energy from sunlight during photosynthesis?

a.	solar cells
b.	stomata
c.	chlorophyll and other pigments
d.	carbohydrates

11.

Respiration in most cells requires

a.	water.
b.	oxygen.
c.	chlorophyll.
d.	carbon dioxide.

Completion

Complete each sentence or statement.

12.

Small openings called ____________________ allow carbon dioxide to enter a leaf.

13.

Plants make their own food using energy that comes from the ____________________.

14.

Almost all living things depend on the process of ____________________ to supply them with the energy they need.

15.

During respiration, molecules of ____________________ are first broken down in the cytoplasm.

16.

The products of respiration are energy, carbon dioxide, and ____________________.

17.

Chloroplasts contain a pigment called ____________________ that captures the energy in light.

Short Answer

Use the diagram to answer each question.

18.

Identify A and B, which are the raw materials for respiration.

19.

Explain where raw materials A and B come from.

20.

Identify C and D, which are the products of respiration.

21.

Is oxygen required for the stage of respiration that takes place in the cytoplasm? Is oxygen required for the stage of respiration that takes place in mitochondria?

22.

Compare the amount of energy released by the stage of respiration that takes place in the cytoplasm with the amount released in the stage of respiration that takes place in the mitochondria.

23.

Can you tell whether the cell shown is a plant cell or an animal cell? Explain why or why not.

Essay

24.

Briefly explain what happens in each of the two stages of photosynthesis.

25.

Briefly explain what happens in each of the two stages of respiration. State the end products and where the stages occur in the cell.

26.

Explain the following statement: Plant cells and animal cells recycle each other’s waste products.

27.

Animals do not make their own food from energy in sunlight. Explain why they still depend on the sun for energy.

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