USA 6 Final

USA 6 Final

Assessment

Flashcard

Science

9th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is an isotonic solution?

Back

An isotonic solution has the same concentration of solutes as another solution, resulting in no net movement of water across a semipermeable membrane.

2.

FLASHCARD QUESTION

Front

Why is pure water not given to patients with severe dehydration?

Back

Pure water is hypotonic and would cause blood cells to swell and burst.

3.

FLASHCARD QUESTION

Front

What happens to enzyme activity when temperature increases?

Back

Enzyme function increases with temperature up to a certain point, after which it decreases due to denaturation.

4.

FLASHCARD QUESTION

Front

What is the role of chloroplasts in plant cells?

Back

Chloroplasts capture light energy and convert it into chemical energy through photosynthesis.

5.

FLASHCARD QUESTION

Front

What biomolecule is most similar to the waxy coating on plants?

Back

Phospholipids are similar to the waxy coating as they also create barriers that are not water-permeable.

6.

FLASHCARD QUESTION

Front

What is the primary function of lipids in the cell membrane?

Back

Lipids separate the contents inside the cell from the outside environment.

7.

FLASHCARD QUESTION

Front

Define homeostasis in biological systems.

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite external changes.

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