McPherson - Diffusion and Osmosis

Flashcard
•
Science, Biology
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is diffusion?
Back
Diffusion is the process where molecules move from an area of high concentration to an area of low concentration.
2.
FLASHCARD QUESTION
Front
What is osmosis?
Back
Osmosis is the movement of water molecules across a semi-permeable membrane.
3.
FLASHCARD QUESTION
Front
What is active transport?
Back
Active transport is the movement of molecules across a membrane from a region of lower concentration to a region of higher concentration, requiring energy.
4.
FLASHCARD QUESTION
Front
What is endocytosis?
Back
Endocytosis is a type of active transport where cells engulf substances to bring them into the cell.
5.
FLASHCARD QUESTION
Front
What is exocytosis?
Back
Exocytosis is a process where cells expel materials in vesicles to the outside of the cell.
6.
FLASHCARD QUESTION
Front
What is a semi-permeable membrane?
Back
A semi-permeable membrane is a barrier that allows certain molecules to pass through while blocking others.
7.
FLASHCARD QUESTION
Front
What happens to a cell in a hypertonic solution?
Back
In a hypertonic solution, water moves out of the cell, causing it to shrink.
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