Microbiology

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created 9 years ago by jenkarmata
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Microbiology
Chapter 1
Mircobiology 205 Chapter 1 Fall 2012 ~jmata~
updated 9 years ago by jenkarmata
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College: Second year
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1

True statements about normal microbiota found on the human body-

A. Normal microbiota provide numerous benefits to humans.
B. Normal microbiota protect us from disease by preventing overgrowth of pathogens.
C. Normal microbiota produce useful substances such as vitamin K for clotting & some B vitamins.

2

All of the following are processes that are beneficial activities of microorganisms-

A. Recycling elements in the environment.
B. Decomposing sewage.
C. Producing foods & chemicals.

3

Field of study & its example

Study of E. coli O157:H7

Bacteriology

4

Field of study & its example

Study of vaccines

Immunology

5

Field of study & its example

Study of athlete's feet (fungi)

mycology

6

Correctly matched types of microorganism & its description.

Fungi-

Eukaryotic

7

Correctly matched types of microorganism & its description.

Bacteria-

Prokaryotic

8

Correctly matched types of microorganism & its description.

Helminthes-

Multicellular animals

9

All of the following are examples of biotechnology

A. Antibiotic production by bacteria
B. Enzyme production by bacteria & fungi
C. Bread making w/bacteria & fungi

10

Types of Microorganisms

-Bacteria
-Archaea
-Fungi
-Protozoa
-Algae
-Viruses
-Multicellular animal parasites

11

Bacteria

- Prokaryotes
- Peptidoglycan cell walls
- Binary fission - Reproduce
- For enegy, use organic chemicals, inorganic chemicals, or photosynthesis.

12

Archaea

- Prokaryotic
- Lack peptidoglycan
- Live in extreme environments
*Include:
--Methanogens
--Extreme halophiles
--Extreme thermophiles

13

Fungi

- Eukayotes
- Chitin cell walls
- Use organic chemicals for energy
- Molds & mushrooms are multicellular, consisting of masses of mycelia, which are composed of filaments called hyphae.
- Yeasts are unicellular

14

Protoza

- 1 cell
- Eukaryotes
- Absorb or ingest organic chemicals
- May be motile via pseudopods, cilia, or flagella
- Classified by movement

15

Algae

- Eukaryotes
-Cellulose cell walls
- Use photosynthesis for energy
- Produce molecular oxygen & organic compounds

16

Viruses

-Acellular
-Consist of DNA or RNA core
-Core is surrounded by a protein coat
-Coat may be enclosed in a lipid envelope
-Are replicated only when they are in a living host cell.

17

Multicellular Animal Parasites

- Eukaryotes
- Multicellular animals
- Parasitic flatworms & roundworms are called helminths (italized)
- Microscopic stages in life cycles