What does selectively-permeable mean?

Allow certain things to enter and leave the cell

The cell lets only large substances through

Which way will the water molecules move during osmosis?

Out of the cell, so the cell shrinks.

Out of the cell, so the cell swells.

Into the cell, so the cell shrinks.

Into the cell, so the cell swells.

water moves from high to low concentration

large or oddly shaped molecules move across a cell membrane

water moves when energy is used

Why would the cell need energy to move molecules across the membrane?

the molecule is going against the concentration gradient

the molecule is to large to pass through the membrane

the lipid membrane requires energy anytime something is moving across the membrane

In passive diffusion, substances always move...

from an area of higher concentration to an area of lower concentration

from an area with more of the molecules to an area with fewer of the molecules

from an area of lower concentration to an area of higher concentration

from an area with fewer of the molecules to an area with more of the molecules

In this situation, where the solute is illustrated by red dots, predict if will WATER move into or out of the cell, and how that will affect the cell.

Water will move out of the cell and the cell will shrink.

Water will move into the cell and the cell will expand.

Water will move into the cell and the cell will shrink.

Water will move out of the cell and the cell will expand.

Cell Transport

Authored by Biology Rocks

Biology

11th - 12th Grade

NGSS covered

Used 121+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Osmosis is the movement of _____ across a membrane.

food

energy

oxygen

water

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which is true about active transport?

It requires energy

it does not require energy

It moves substances down the concentration gradient

it moves material from high to low concentration

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Molecules diffusing with the concentration gradient through a protein channel is...

Facilitated Diffusion

Simple Diffusion

Active Transport

Osmosis

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.

vacuole

nucleus

cell membrane

cell wall

Movement of particles from high to low concentration.

Passive Transport

Active Transport

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Osmosis is a form of ______________.

Passive Transport

Active Transport

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Solutes move with the concentration gradient, therefore no energy is used.

Passive Transport

Active Transport

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Cell Transport

Osmosis is the movement of _____ across a membrane.

Which is true about active transport?

Molecules diffusing with the concentration gradient through a protein channel is...

This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.

Movement of particles from high to low concentration.

Osmosis is a form of ______________.

Solutes move with the concentration gradient, therefore no energy is used.

Solutes move against the concentration gradient, therefore energy is needed.

Which diagram best shows the end result of diffusion?

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of ___________.

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