What is active transport?
9 Weeks Exam Study Guide Part 1

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Biology
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
Active transport is the process by which cells move substances against their concentration gradient, requiring energy input, usually in the form of ATP.
2.
FLASHCARD QUESTION
Front
What is osmosis?
Back
Osmosis is the movement of water molecules through a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
3.
FLASHCARD QUESTION
Front
What is a hypertonic solution?
Back
A hypertonic solution is one that has a higher concentration of solutes compared to another solution, causing cells to lose water and shrink.
4.
FLASHCARD QUESTION
Front
What is a hypotonic solution?
Back
A hypotonic solution is one that has a lower concentration of solutes compared to another solution, causing cells to gain water and swell.
5.
FLASHCARD QUESTION
Front
What is an isotonic solution?
Back
An isotonic solution has an equal concentration of solutes compared to another solution, resulting in no net movement of water into or out of the cell.
6.
FLASHCARD QUESTION
Front
What role do kidneys play in the body?
Back
The kidneys filter blood to remove waste products and excess substances, maintaining fluid and electrolyte balance.
7.
FLASHCARD QUESTION
Front
What is the difference between passive and active transport?
Back
Passive transport does not require energy and moves substances along their concentration gradient, while active transport requires energy to move substances against their gradient.
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