AP Biology Unit 4 Cell Cycle and Cell Communication

AP Biology Unit 4 Cell Cycle and Cell Communication

Assessment

Flashcard

Biology

12th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a ligand?

Back

A signal molecule that binds to a plasma-membrane protein, initiating a cellular response.

2.

FLASHCARD QUESTION

Front

During which phase of the cell cycle is DNA replicated?

Back

S phase.

3.

FLASHCARD QUESTION

Front

What occurs during late anaphase of mitosis?

Back

A clear area in the center of the cell is observed as chromosomes are pulled apart.

4.

FLASHCARD QUESTION

Front

What does apoptosis mean?

Back

Programmed cell death.

5.

FLASHCARD QUESTION

Front

How can cells communicate with one another?

Back

Cells can communicate via chemical messengers, hormones, and gap junctions.

6.

FLASHCARD QUESTION

Front

What is the role of a receptor protein?

Back

To bind to specific ligands and initiate a cellular response.

7.

FLASHCARD QUESTION

Front

What is the function of second messengers in cell signaling?

Back

They relay signals received at receptors on the cell surface to target molecules inside the cell.

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