Activities Quiz

Chapter 7: Membrane Structure and Function

Activities Quiz

1 .

What is the function of Structure E? (Activity: Membrane Structure)

transport across the plasma membrane

stabilization of the phospholipids

cell-cell communication

structural support of the cell

detection of environmental change

2 .

Identify Structure D. (Activity: Membrane Structure)

glycoprotein

cholesterol

phospholipid bilayer of membrane

extracellular matrix

protein

3 .

Identify Structure A. (Activity: Membrane Structure)

glycoprotein

cholesterol

phospholipid

extracellular matrix

protein

4 .

Click on structure A to see an animation of its function. Structure A is a(n) _____. (Activity: Selective Permeability of Membranes)

receptor molecule

antibody

structural protein

enzyme

transport protein

5 .

Which of these cannot pass directly through the phospholipids of the plasma membrane? (Activity: Selective Permeability of Membranes)

A

B

C

D

B, C, and D

6 .

Click on the art to see an animation. What name is given to the process? (Activity: Diffusion)

sodium-potassium pump

turgor

active transport

osmosis

diffusion

7 .

What name is given to the process by which water crosses a selectively permeable membrane? (Activity: Osmosis and Water Balance in Cells)

diffusion

passive transport

phagocytosis

pinocytosis

osmosis

8 .

This cell is in a(n) _____ solution. (Activity: Osmosis and Water Balance in Cells)

hypotonic

hypertonic

isotonic

hypotonic and isotonic

hypertonic or isotonic

9 .

You know that this cell is in a(n) _____ solution because the cell _____. (Activity: Osmosis and Water Balance in Cells)

hypertonic ... lost water

hypertonic ... gained water

isotonic ... neither lost nor gained water

hypotonic ... shrunk

hypotonic ... swelled

10 .

Click on the cell to start the animation. This plant cell is _____. (Activity: Osmosis and Water Balance in Cells)

lysing

in a hypotonic solution

hypertonic solution

in an isotonic solution

losing water

11 .

You know that this cell is in a(n) _____ solution because it _____. (Activity: Osmosis and Water Balance in Cells)

hypotonic ... is turgid

hypotonic ... lysed

hypertonic ... lysed

hypertonic solution ... lost water

hypertonic ... gained water

12 .

Click on the membrane protein to begin the animation. This process is referred to as _____. (Activity: Facilitated Diffusion)

phagocytosis

facilitated diffusion

osmosis

pinocytosis

active transport

13 .

Structure A is a _____. (Activity: Facilitated Diffusion)

water molecule

phospholipid

transport protein

solvent

solute

14 .

Structure B is a _____. (Activity: Facilitated Diffusion)

water molecule

phospholipid

transport protein

solvent

solute

15 .

Click on the membrane transport protein to start the animation. Which of these is TRUE with regard to this animation? (Activity: Active Transport)

Sodium ions are transported down their concentration gradient.

An electrochemical gradient forms across the plasma membrane.

The cell does not expend ATP.

The cell is not expending energy.

Potassium ions are transported down their concentration gradient.

16 .

Endocytosis moves materials _____ a cell via _____. (Activity: Exocytosis and Endocytosis)

into ... facilitated diffusion

into ... membranous vesicles

into ... a transport protein

out of ... diffusion

out of ... membranous vesicles

17 .

Click on the vesicle. This is an animation of _____. (Activity: Exocytosis and Endocytosis)

facilitated diffusion

exocytosis

phagocytosis

endocytosis

osmosis

18 .

Click on the brown debris. This is an animation of _____. (Activity: Exocytosis and Endocytosis)

facilitated diffusion

exocytosis

phagocytosis

diffusion

receptor-mediated endocytosis

19 .

Click on the extracellular fluid. You know that this process is _____ because _____. (Activity: Exocytosis and Endocytosis)

phagocytosis ... the cell is engulfing a large particle

pinocytosis ... the cell is engulfing a large particle

phagocytosis ... the cell is engulfing extracellular fluid

receptor-mediated endocytosis ... a receptor protein is involved

pinocytosis ... the cell is engulfing extracellular fluid

20 .

Click on the receptor protein. This is an animation of _____. (Activity: Exocytosis and Endocytosis)

facilitated diffusion

exocytosis

phagocytosis

diffusion

receptor-mediated endocytosis

21 .

A white blood cell engulfing a bacterium is an example of _____. (Activity: Exocytosis and Endocytosis)

pinocytosis

receptor-mediated endocytosis

exocytosis

phagocytosis

facilitated diffusion