Unit 2 Cells & Cell Systems Review

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•
Biology
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a cell wall?
Back
A rigid outer layer found in plant cells that provides structure and support, not present in animal cells.
2.
FLASHCARD QUESTION
Front
What is the main difference between prokaryotes and eukaryotes?
Back
Prokaryotes do not have a nucleus, while eukaryotes do.
3.
FLASHCARD QUESTION
Front
What is a transport or channel protein?
Back
A type of protein that helps move substances across a cell membrane.
4.
FLASHCARD QUESTION
Front
What is diffusion?
Back
The process by which molecules spread from areas of high concentration to areas of low concentration.
5.
FLASHCARD QUESTION
Front
What is active transport?
Back
The movement of molecules across a cell membrane using energy, against their concentration gradient.
6.
FLASHCARD QUESTION
Front
What is endocytosis?
Back
The process by which a cell engulfs material from the outside environment.
7.
FLASHCARD QUESTION
Front
What is the sodium-potassium pump?
Back
A type of active transport that moves sodium out of the cell and potassium into the cell.
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