What is a ligand?
AP Biology Unit 4 Cell Cycle and Cell Communication

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•
Biology
•
12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
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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