Quiz 2 corrections/review

Question 1

Describe the effects on a plant and animal cell in a hypertonic solution.

Answer 1

Cells in a hypertonic solution will shrivel.

Question 2

What is the model used to describe a plasma membrane in which molecules can float?

Answer 2

Fluid Mosaic Model

Question 3

What is the total magnification of the microscope with the high power objective lens in place?

Answer 3

40x

Question 4

What is the orientation of the image vs. the actual specimen?

Answer 4

The microscope makes it simpler to view than with the naked eye.

Question 5

T or F: Exocytosis does not require energy.

Answer 5

False

Question 6

How do cells use exocytosis?

Answer 6

Cells use exocytosis to expel wastes and to secrete substances, such as hormones, produced by the cell.

Question 7

Define endocytosis.

Answer 7

The process which a cell surrounds a substance in the outside environment, enclosing the substance in a portion of the plasma membrane