Unit 2B: Cell Membrane & Transport
Flashcard
•
Biology
•
9th Grade
•
Practice Problem
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Easy
Jordan Walker
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31 questions
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1.
FLASHCARD QUESTION
Front
Active transport
Back
A cell must expend energy (ATP) in order to move solutes against its concentration gradient (low to high) with the aid of a transport protein.
2.
FLASHCARD QUESTION
Front
Aquaporin
Back
Protein channels that assist water in diffusing rapidly across the cell membrane.
3.
FLASHCARD QUESTION
Front
Channel protein
Back
Creates a hydrophilic channel that some molecules and ions use as a tunnel to pass through the membrane (typically high to low concentration)
4.
FLASHCARD QUESTION
Front
Cholesterol
Back
Type of steroid that is found in animal cell membranes to help keep phospholipids spaced out.
5.
FLASHCARD QUESTION
Front
Concentration gradient
Back
The difference in the concentration of a substance between two areas. Particles tend to follow a natural pattern moving from high to low concentration.
6.
FLASHCARD QUESTION
Front
Diffusion
Back
The net movement of particles down a concentration gradient from a region of higher concentration to a region of lower concentration.
7.
FLASHCARD QUESTION
Front
Endocytosis
Back
The process by which cells take in substances from outside of the cell by engulfing them in a vesicle.
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