MCQs MICROBIOLOGY: Bacteria multiplication

1.
Which of the following is/are not a gram-positive bacteria?

A. Streptococci
B. Pseudomonas
C. Mycobacteria
D. None of these
Answer & Explanation
Answer: Option B

2.
Gram-positive bacteria, responsible for food poisoning, is/are

A. Mycoplasmas
B. Pseudomonas
C. Clostridia
D. all of these
Answer & Explanation
Answer: Option C

3.
The gram-positive bacteria lack __________ structure/component?

A. outer membrane
B. murein
C. teichoic acid
D. plasma membrane
Answer & Explanation
Answer: Option A

4.
Which of the following gram-positive bacteria causes pharyngitis (sore throat)?

A. Neisseria B. Streptococcus
C. Staphylococcus D. Mycobacterium
Answer & Explanation
Answer: Option B

5.
Which of the following gram-negative bacteria is/are not aerobic?

A. Pseudomonas
B. Neisseria
C. Escherichia
D. None of these
Answer & Explanation
Answer: Option C

6.
The enzyme, which hydrolyses the murein is

A. perxoidase
B. tannase
C. lysozyme
D. none of these
Answer & Explanation
Answer: Option C

7.
Bacterial spoilage is identified by which of the following morphological characteristics?

A. Encapsulation
B. Endospores
C. Cell aggregation
D. All of these
Answer & Explanation
Answer: Option D

8.
Bacteria are

A. saprophytic
B. symbiotic
C. hyper parasitic
D. all of these
Answer & Explanation
Answer: Option A

9.
Gram-negative bacteria, responsible for food poisoning, is/are

A. Salmonella
B. Pseudomonas
C. Clostridia
D. None of these
Answer & Explanation
Answer: Option A

10.
Coliform bacteria on fermentation of carbohydrates yields

A. lactic acid
B. acetic acid
C. formic acid
D. all of these
Answer & Explanation
Answer: Option D

11.
Gram-negative bacterium is/are

A. Escherichia
B. Clostridia
C. Staphylococci
D. All of these
Answer & Explanation
Answer: Option A

12.
Thermus thermopiles is a

A. gram negative eubacteria
B. gram positive eubacteria
C. gram negative archebacteria
D. gram positive archebacteria
Answer & Explanation
Answer: Option A

13.
Which of the following is a gram-positive bacteria?

A. Lactobacillus
B. Staphylococci
C. Streptococci
D. All of these
Answer & Explanation
Answer: Option D