What is active transport?

Bell Ringer #40

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Biology
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).
2.
FLASHCARD QUESTION
Front
What is passive transport?
Back
Passive transport is the movement of molecules across a cell membrane without the use of energy, moving from an area of higher concentration to an area of lower concentration.
3.
FLASHCARD QUESTION
Front
Define osmosis.
Back
Osmosis is the transfer of water across a semipermeable membrane from an area of high water concentration (low solute concentration) to an area of low water concentration (high solute concentration).
4.
FLASHCARD QUESTION
Front
What is a hypotonic solution?
Back
A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell, which may lead to swelling.
5.
FLASHCARD QUESTION
Front
What is an isotonic solution?
Back
An isotonic solution has an equal concentration of solutes inside and outside the cell, resulting in no net movement of water, and the cell remains the same size.
6.
FLASHCARD QUESTION
Front
What is a hypertonic solution?
Back
A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell, which may lead to shrinking.
7.
FLASHCARD QUESTION
Front
What is the role of ATP in active transport?
Back
ATP provides the energy required for active transport to move molecules against their concentration gradient.
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