Lesson:1 The Cell and Cell Membrane

Question 1

What is the basic unit of life?

Answer 1

The cell

Question 2

True or False: The cell membrane is selectively permeable.

Answer 2

True

Question 3

Fill in the blank: The main components of the cell membrane are __________ and proteins.

Answer 3

lipids

Question 4

Which structure regulates what enters and exits the cell?

Answer 4

Cell membrane

Question 5

What type of molecules can pass through the cell membrane easily?

Answer 5

Small, nonpolar molecules

Question 6

What is the role of cholesterol in the cell membrane?

Answer 6

To stabilize membrane fluidity

Question 7

Multiple choice: Which of the following is NOT a function of the cell membrane? A) Protection B) Communication C) Energy production D) Transport

Answer 7

C) Energy production

Question 8

What is the fluid mosaic model?

Answer 8

A model that describes the structure of the cell membrane as a mosaic of various proteins floating in or on the fluid lipid bilayer.

Question 9

True or False: All cells have a cell wall.

Answer 9

False

Question 10

What is the function of membrane proteins?

Answer 10

To facilitate transport, act as receptors, and assist in cell recognition.