Chapter 1: Bacterial Taxonomy

Question 1

What are the 6 classic gram positive bugs which cause disease in humans?

Answer 1

1) Streptococcus
2) Staphylococcus
3) Bacillus
4) Clostridium
5) Corynebacterium (cor-in-ee-bacterium)
6) Listeria

(p. 4 - 5)

Question 2

Bacteria are grouped and named primarily on their _____________, ___________, and _________ differences. However, bacteria are now also being classified according to their ___________ and _______ characteristics.

Answer 2

morphological
biochemical
metabolic
immunologic
genetic

(p. 1)

Question 3

What color do gram-positive organisms stain (using Gram stain)?

Answer 3

blue

Question 4

What color do gram-negative organisms stain (using Gram stain)?

Answer 4

red

Question 5

Both gram-positive and gram-negative organisms have more than 1 layer protecting their cytoplasm and nucleus from the extracellular environment, unlike ______ cells, which have only a single ___________ ________ composed of a ____________ bilayer.

Answer 5

animal
cytoplasmic membrane
phospholipid

Question 6

The layer just outside the bacterial cytoplasmic membrane is the _____________ layer or cell wall.

Answer 6

peptidoglycan

p. 1