Quiz about Cell Transport AP Biology

Question 1

The value for $$\Psi$$ in root tissue was found to be -3.3 bars. If you take the root tissue and place it in a 0.1 M solution of sucrose at 20 $$\degree$$ C in an open beaker, what is the $$\Psi$$ of the solution, and in which direction would the net flow of water be?

Accepted Answer

$$\Psi s$$ = -2.43, net flow into the root

Answer

$$\Psi s$$ = -3.3, net flow into the root

Answer

$$\Psi s$$ = 3.3, net flow out of the root (into the solution)

Answer

$$\Psi s$$ = 2.43, net flow out of the root (into the solution)

Question 2

A plant cell with a $$\Psi s$$ of -7.5 bars keeps a constant volume when immersed in an open-beaker solution that has a $$\Psi s$$ of -4 bars. What is the cells $$\Psi p$$ ?

Accepted Answer

3.5

Answer

-4

Answer

-7.5

Answer

-3.5

Question 3

At 20 $$\degree$$ C, a cell containing 0.6M glucose is in equilibrium with its surrounding solution containing 0.5M glucose in an open container. What is the cell's $$\Psi p$$ ?

Accepted Answer

2.4

Answer

0.1

Answer

-12.2

Answer

-14.6

Question 4

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

Accepted Answer

High, low

Answer

Low, high

Answer

Low, low

Answer

High, high

Question 5

Osmosis is the movement of _____ across a membrane.

Accepted Answer

water

Answer

food

Answer

energy

Answer

oxygen

Question 6

Why can't you drink salt water?

Accepted Answer

It's hypertonic to your cells

Answer

It's hypotonic to your cells

Answer

It's isotonic to your cells

Answer

It's paratonic to your cells

Question 7

This egg has shrunk, what type of solution was it placed in?

Accepted Answer

hypertonic solution

Answer

hypotonic solution

Answer

isotonic solution

Answer

active transport

Question 8

You put a cell into a solution, the cell grows. Is the solution hypotonic or hypertonic to the cell?

Accepted Answer

hypotonic

Answer

hypertonic

Answer

isotonic

Answer

not enough information

Question 9

An ISOTONIC solution has a(n) ______________ concentration of solute (dissolved stuff) than inside the cell.

Accepted Answer

equal

Answer

lower

Answer

higher

Question 10

What type of solution is this cell in?

Accepted Answer

Hypertonic

Answer

Isotonic

Answer

Hypotonic

Answer

diffused

Question 11

As a result of diffusion, the concentration of many types of substances

Accepted Answer

eventually becomes balanced on both sides of a membrane.

Answer

always remains greater inside a membrane.

Answer

always remains greater on the outside of a membrane.

Answer

becomes imbalanced on both sides of a membrane.

Question 12

Which of the following processes requires energy input from the cell?

Accepted Answer

Active transport

Answer

Diffusion

Answer

Osmosis

Answer

Facilitated diffusion

Question 13

A red blood cell is placed in a solution and it shrinks. What can be inferred about the solution?

Accepted Answer

The solution is hypertonic to the cell

Answer

The solution is isotonic to the cell

Answer

The solution is hypotonic to the cell

Answer

The solution is at equilibrium with the cell

Question 14

Which of the following best describes the role of aquaporins in cell transport?

Accepted Answer

They facilitate the passive transport of water across the cell membrane

Answer

They actively pump ions across the cell membrane

Answer

They are involved in the active transport of glucose

Answer

They prevent water from entering the cell

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