The movement of potassium into an animal cell requires

low cellular concentrations of sodium

high cellular concentrations of potassium

When a plant cell, such as one from a tulip stem, is submerged in a very hypotonic solution, what is likely to occur?

Plasmolysis will shrink the interior.

Which statement is correct about diffusion?

It's a passive process which molecules move from a region of higher to lower concentration.

It's very rapid over long distances.

It requires an energy expenditure by the cell.

It's an active process where molecules move from a region of lower to higher concentration.

A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled water-equal to the volume of blood lost-is transferred directly into one of his veins. What will be the most probable result of this transfusion?

The patient's red blood cells will swell because the blood fluid has become hypotonic compared to the cells.

The patient's red blood cells will shrivel up because the blood fluid has become hypertonic compared to the cells.

The patient's red blood cells will shrivel up because the blood fluid has become hypotonic compared to the cells.

It will have no unfavorable effect as long as the water is free of viruses and bacteria.

In biological membranes, the phospholipids are arranged in a _______, with the_______.

bilayer; fatty acids pointing toward each other

bilayer; fatty acids facing outward

single layer; fatty acids facing the interior of the cell

single layer; phosphorus-containing region facing the interior of the cell

Which statement about cholesterol molecules is true?

They alter the fluidity of the membrane.

They help hold a membrane together.

They disrupt membrane function.

The plasma membranes of winter wheat are able to remain fluid when it is extremely cold by

replacing saturated fatty acids with unsaturated fatty acids

synthesizing new forms of cholesterol

decreasing the number of hydrophobic proteins present

The rate at which a substance diffuses is not affected by the

concentration gradient in the system

The existence of a concentration gradient of glucose across a membrane means that

the glucose molecules are more crowded on one side of the membrane than on the other

there is a high concentration of water on both sides of the membrane

there is a high concentration of glucose on both sides of the membrane

the glucose molecules are chemically bonded more tightly on one side of the membrane than on the other

Which statement about diffusion is false ?

Simple diffusion depends upon specific carrier proteins

In diffusion, molecules move from areas of greater concentration to areas of lesser concentration

Diffusion continues until the molecular concentrations are in equilibrium

The difference between osmosis and diffusion is that

osmosis refers specifically to the movement of water, whereas diffusion refers to the movement of any type of molecules

diffusion is passive transport, whereas osmosis is active transport

only in diffusion do molecules move from areas of high concentration to areas of low concentration

osmosis is the opposite of diffusion and only involves the movement of water

Which of the following is not one of the functional roles of membrane proteins?

Allowing movement of molecules that otherwise would be excluded by the lipid components of the membrane

Transferring signals from outside the cell to inside the cell

Facilitating the transport of macromolecules across the membrane

If aquaporins are injected into the membranes of epithelial cells that line blood vessels,

the membranes will become more permeable to water

the flow of Na+ through aquaporins will increase

the intracellular concentration of K+ will increase

the electrical properties of the cells will be altered

Which way would the purple molecules move through the semi-permeable membrane?

none of the purple molecules would move

they would move equally back and forth in a state of dynamic equilibrium

Neither into or out of the cell

If you looked at red blood cells under a microscope and saw the blood cells exploded, what would you say happened?

The cells were placed in a hypotonic solution.

0.9% NaCl is isotonic to red blood cells. Which of these describes what will happen if a technician misplaces a decimal point and makes 9.0% NaCl solution instead and administers it to a patient?

The cells exposed to the solution will shrink.

The cells exposed to the solution will burst.

The cells will remain the same size.

The cells exposed to the solution will expand but not burst.

Pulling away of the plant cell membrane as it loses water in a hypertonic solution.

Pulling away of the animal cell membrane as it undergoes osmosis.

An increase in turgor pressure as the cell undergoes osmosis.

Contraction of the protoplast of a plant cell as a result of gaining water.

AP Bio - Cells and Membranes

Authored by Nicole Roberson

Biology

11th - 12th Grade

50 Questions

NGSS covered

Used 226+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Increases the fluidity of the plasma membrane

more saturated fatty acids

more unsaturated fatty acids

more cholesterol

more integral proteins

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens to a RBC when it is put into a hypertonic solution?

it swells

it shrinks

it stays the same size

it breaks

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Cholesterol enters cells via ___.

pinocytosis

receptor mediated endocytosis

phagocytosis

facilitated diffusion

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What type of transport would release enzymes from pancreatic cells?

exocytosis

pinocytosis

phagocytosis

facilitated diffusion

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Sodium ions get pumped _ the cell, and potassium ions get pumped of the cell.

out, out

in, in

out, in

in, out

Energy source for active transport.

Sunlight

ATP

Glucose

DNA

Which structure is common to plant and animal cells?

central vacuole

chloroplast

wall made of cellulose

mitochondrion

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AP Bio - Cells and Membranes

Increases the fluidity of the plasma membrane

What happens to a RBC when it is put into a hypertonic solution?

Cholesterol enters cells via ___.

What type of transport would release enzymes from pancreatic cells?

Sodium ions get pumped _ the cell, and potassium ions get pumped of the cell.

Energy source for active transport.

Which structure is common to plant and animal cells?

Plant cells have ___ for cell to cell communication.

White blood cells engulf bacteria through what process?

The movement of potassium into an animal cell requires

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology

AP Bio - Cells and Membranes

Increases the fluidity of the plasma membrane

What happens to a RBC when it is put into a hypertonic solution?

Cholesterol enters cells via ___.

What type of transport would release enzymes from pancreatic cells?

Sodium ions get pumped _____ the cell, and potassium ions get pumped ____of the cell.

Energy source for active transport.

Which structure is common to plant and animal cells?

Plant cells have ___ for cell to cell communication.

White blood cells engulf bacteria through what process?

The movement of potassium into an animal cell requires

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology

Sodium ions get pumped _ the cell, and potassium ions get pumped of the cell.