7th Grade Science : 7th Grade Science

Study concepts, example questions & explanations for 7th Grade Science

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Example Questions

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Example Question #1 : Life Science

What controls movement of materials in and out of the cell, and acts as a barrier between the cell and the environment?

 

Possible Answers:

Nucleus

Cell wall

Nuclear membrane

Cell membrane 

Correct answer:

Cell membrane 

Explanation:

To answer this question correctly, we need to know the function of the following organelles: 

The cell membrane controls movement of materials in and out of the cell, and acts as a barrier between the cell and the environment. 

The cell wall protects the cell, and allows water, oxygen, and carbon dioxide into and out of the cell. 

The nuclear membrane controls movement in and out of the nucleus.

The nucleus controls the cell's activities. 

Cell membrane is the correct answer. 

Example Question #11 : 7th Grade Science

What controls movement in and out of the nucleus?

 

Possible Answers:

Cell wall

Cell membrane 

Nucleus 

Nuclear membrane

Correct answer:

Nuclear membrane

Explanation:

To answer this question correctly, we need to know the function of the following organelles: 

The cell membrane controls movement of materials in and out of the cell, and acts as a barrier between the cell and the environment. 

The cell wall protects the cell, and allows water, oxygen, and carbon dioxide into and out of the cell. 

The nuclear membrane controls movement in and out of the nucleus.

The nucleus controls the cell's activities. 

Nuclear membrane is the correct answer. 

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