diffusion is the movement of

particles from high to lowconcentration

water from low to high concentration

particles from low to high concentration

water from high to low concentration

which way would the purple molecules move through the semi permeable membrane?

none of the purple molecules would move

the concentration levels are different

What does it mean that a cell membrane is semi-permeable?

It allows unhealthy substances in

If there is 5 percent water inside a cell and 5 percent water outside a cell

There will be no movement of water cells

more water will move inside the cell

more water will move outside the cell

The water will be lost as sweat

What will be the effect of placing a plant cell in a hypotonic solution?

The cell will expand and become turgid.

The cell will remain unaffected.

Two types of transport of molecules across a cell membrane are: Transport 1: Solute molecules move across the cell membrane along their concentration gradient; requires no energy expenditure. Transport 2: Solute molecules move across the cell membrane against their concentration gradient; requires expenditure of energy. Which statement is CORRECT?

Transport 1 describes passive transport by diffusion.

Transport 2 describes passive transport by the Na+/K+ pump.

Transport 2 describes passive transport by a carrier protein.

Transport 1 describes facilitated transport of substances through the membrane.

Shaquan placed a potato slice in salt water. After some time he noticed that the slice of potato became limp. Why did this happen to the potato slice?

The potato cells lost water to the surroundings.

The potato cells gained water from the surroundings.

The potato cells had no exchange of materials with the environment.

Water's unique properties result from the fact that water

has such a small molecular mass.

Biology students used raw eggs in an experiment on tonicity and osmosis. The students put their eggs into vinegar to remove the shells. The vinegar was used to remove the shell from the raw egg. What other effect(s) did the vinegar have on the egg?

The vinegar solution was hypotonic, causing the egg to gain mass.

The vinegar solution was hypotonic, causing the egg to lose mass.

The vinegar solution was hypertonic, causing the egg to gain mass.

The vinegar solution was isotonic to the egg so the mass remained constant.

The picture shows the active transport of ions by the sodium-potassium pump.How is diffusion different from this process?

Diffusion transfers particles from an area of high to low concentration.

Diffusion takes place due to osmotic pressure.

Diffusion requires cellular energy for the transfer of molecules.

Diffusion requires protein channels as a passage-way for particles.

In nerve cells the sodium-potassium pump is used to generate gradients of both sodium and potassium ions to propagate electrical signals that travel along nerves. This is a(n)

example of movement with the concentration gradient.

While cleaning a saltwater aquarium, students placed a family of fiddler crabs from the saltwater aquarium into a container of distilled water. What effect will this have on the crabs?

The crabs will die if left in the freshwater, their cells will burst.

The crabs will not be affected at all.

The crabs will excrete excess salts left in their systems.

The crabs will die if left in the freshwater, their cells will shrink.

As surface area of a cell increases, the surface area/volume ratio

remains constant, then increases exponentially.

Which statement concerning osmosis and active transport is correct?

Active transport requires cell energy while osmosis does not.

Both endocytosis and active transport require cell energy.

Neither faciliated diffusion nor osmosis requires cell energy.

Diffusion of gases and other small molecules requires no energy on part of the cell.

If stranded on a deserted island with no freshwater, it is not advisable to drink sea water. Why not?

The salt in the body creates a hypertonic solution around cells, which causes water to diffuse out of cells and make them crenate.

The salty snacks cause an ionic imbalance that triggers a nervous response.

The salt in the body creates a hypotonic solution around cells, which causes water to diffuse into cells and make them cytolyse.

The salt in the body creates an isotonic solution around cells, which causes water to diffuse into and out of cells which makes them unstable.

The solution inside a plant cell is approximately a 1% saline solution. In a 25% NaCl solution, the cytoplasm of a plant cell will

shrink and draw away from the cell wall.

swell and burst from the cell membrane.

enlarge and cause expansion of the cell wall.

During diffusion, molecules move

from higher concentration to lower concentration.

to points equidistant from the point of origin.

from lower concentration to higher concentration.

Because water is a polar molecule, it makes an excellent solvent for atoms and compounds found within cells and tissues. Water, acting as a solvent in organisms, aids in all of the following EXCEPT

supplying oxygen and nutrients to cells.

How would a saltwater fish respond if it is put in an aquarium of fresh water?

Water would move into the cells of the fish

Salt would move into the cells of the fish

Water would move out of the cells of the fish

Salt and water would move out of the cells of the fish

A plant has been removed from its natural environment and placed into a body of water that contains a higher concentration of salt than the inside of each plant cell. The plant promptly wilts. This situation is most similar to which event?

a freshwater plant put into sea water

a land plant put into tap water

a freshwater plant put into distilled water

Cellular Transport

Authored by Gloria Miller

Biology

9th Grade

NGSS covered

Used 38+ times

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Passive transport requires no

concentration gradients

osmosis

motion

energy

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

This example of passive transport is the diffusion of water.

osmosis

concentration gradient

isotonic

facilitated diffusion

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

This solution has the equal concentrations of water molecules and particles.

hypertonic

hypotonic

isotonic

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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

vacuole

nucleus

cell membrane

cell wall

Controlling what goes into or out of the cell with the help of energy is called

active transport

endocytosis

passive transport

exocytosis

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

This releases substances outside a cell

endocytosis

exocytosis

both

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The movement of molecules against a concentration gradient

simple diffusion

facilitated diffusion

active transport

osmosis

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Cellular Transport

Passive transport requires no

This example of passive transport is the diffusion of water.

This solution has the equal concentrations of water molecules and particles.

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

Controlling what goes into or out of the cell with the help of energy is called

This releases substances outside a cell

The movement of molecules against a concentration gradient

This takes substances into a cell

In which solution will water move out of the cell resulting in the cell shriveling up?

In which solution will water move into the cell resulting in the cell bursting?

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