1.What does Streptococci look like under the microscope?

a.strings of rods

b.strings/chains of spheres

c.clusters of rods

d.grape-like clusters of spheres

2.What is the total magnification when you used he 40Xobjective?

a.400X

b.40X

c.4X

d.4000X

QUESTION 3

1. What was the purpose of the streak plate method?

	a.	to count the number of bacteria in a culture
	b.	to count the number of coliforms in a culture
	c.	To isolate single colonies from a mixture of bacteria
	d.	to show that bacteria are everywhere

QUESTION 4

1. The dye that gives Gram+ bacteria their color is

	a.	crystal violet
	b.	safranin
	c.	Iodine
	d.	methylene blue

1. The dye that is retained by Gram- bacteria is

	a.	iodine
	b.	Methylene blue
	c.	Safranin
	d.	Crystal violet

QUESTION 6

1. The counterstain used for the acid fast staining procedureis

	a.	carbolfuschin
	b.	crystal violet
	c.	methylene blue
	d.	safranin

QUESTION 7

1. Which of the following is NOT a selective medium?

	a.	Blood agar
	b.	Mannitol salt
	c.	BGB
	d.	Snyder's agar

QUESTION 8

1. Alpha hemolysis is

	a.	The complete lysis of red blood cells
	b.	The complete lysis of bacteria
	c.	The partial lysis of red blood cells
	d.	No lysis of red blood cells

QUESTION 9

1. Amylase is an enzyme which breaks down

	a.	gelatin
	b.	starch
	c.	lactose
	d.	glucose

QUESTION 10

1. A medium that supports the growth of a wide variety ofbacteria

	a.	synthetic medium
	b.	selective medium
	c.	nutrient medium
	d.	differential medium