Microbiology Exam 1 - Set 2 Updated Actual Questions With Correct Answers

MICROBIOLOGY EXAM 1 - SET 2
UPDATED ACTUAL QUESTIONS WITH CORRECT
ANSWERS

Question 1.
Identify 3 components of both gram positive and negative bacteria.

ANSWER
-Cell wall -Capsule -Plasma cell membrane


Question 2.
Compare/contrast gram (+) and gram bacteria

ANSWER
Gram (+)
(-) 1. thick peptidoglycan
2. small periplasmic space
3. Teichoic acid Gram (-)
1. THIN peptidoglycan
2. LPS
3. Porins
4. Large periplasmic space


Question 3.
Plasmids carry genes for?

ANSWER
1. Antibiotic resistance
2. Resistance to heavy metals (Hg, Ag)
3. Resistance to UV light
4. Pili
5. Exotoxins






,Question 4.
Bacterial shapes:

ANSWER
cocci - diplococci (pair)
- streptococci
- tetrad (4)
- staphylococci
- Sarcina (cube of 8)






,Question 5.
Bacterial shapes: (Bacilli)

ANSWER
Rods -chain of bacilli -flagellate rods -spore former






, Question 6.
Bacterial shapes: rals

ANSWER
Spi- -Vibrios -Spirilla -Spirochaetes




Question 7.
The shape of a bacterium is determined its _____.

ANSWER
rigid cell wall by


Question 8.
Smallest and largest bacteria

ANSWER
Smallest: Mycoplasma Largest: Bacillus anthracis


Question 9.
Bacteria is a prokaryote with the following characteristics: ______

ANSWER
-no nucleus or membrane-bound organelles -chromosomes and plasmids freely float in
cytoplasm


Question 10.
Function of cells wall

ANSWER
• Provides structural support
• Made of peptidoglycan (polysaccharide)