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

A. Streptococci
B. Pseudomonas
C. Mycobacteria
D. None of these

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

A. Mycoplasmas
B. Pseudomonas
C. Clostridia
D. all of these

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

A. outer membrane
B. murein
C. teichoic acid
D. plasma membrane

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

A. Neisseria
B. Streptococcus
C. Staphylococcus
D. Mycobacterium

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

A. Pseudomonas
B. Neisseria
C. Escherichia
D. None of these

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