Quiz 3

Question 1

What color are bacterial cells after the decolorizer step in the gram stain procedure?

Answer 1

Gram positive cells are purple and gram negative stains are colorless

Question 2

Bacterial cells that are isolated from a healthy humans skin and appear as clusters of cocci are likely of the genus:

Answer 2

Staphylococcus

Question 3

This type of microscopy is used to look at living cells.

Answer 3

Phase-contrast

Question 4

The ability to distinguish two adjacent objects as separate and distinct is called:

Answer 4

Resolution

Question 5

Which type of microscopy is used to look at dead, stained cells?

Answer 5

Bright-field