Chapter Exam

Chapter 7: Morphology of Bacteria — Online MCQ Test

Q: What is the term used for bacteria that are spherical in shape?

Answer: B. Cocci — Cocci are spherical or oval-shaped bacteria, while bacilli are rod-shaped.

Q: Which of the following structures is responsible for bacterial motility?

Answer: C. Flagella — Flagella are whip-like appendages that provide locomotion to bacterial cells.

Q: Which component is present in Gram-negative bacteria but absent or very thin in Gram-positive bacteria?

Answer: C. Outer membrane — Gram-negative bacteria possess an outer membrane containing lipopolysaccharides that is absent in Gram-positive bacteria.

Q: Compare Gram-positive and Gram-negative cell walls: which statement is correct?

Answer: C. Gram-positive contain teichoic acids. — Teichoic acids are characteristic components of the cell wall of Gram-positive bacteria.

Q: A bacterium with a single flagellum at one pole is classified as:

Answer: C. Monotrichous — Monotrichous bacteria have a single flagellum located at one end of the cell.

MICROBIOLOGY · CLASS 11th · Tamil Nadu State Board

Practice Chapter 7: Morphology of Bacteria with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 11th MICROBIOLOGY. This chapter covers: This chapter covers bacterial cell shapes arrangements and ultrastructure including cell walls plasma membranes flagella pili capsules and endospores. Students study Gram-positive.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 7: Morphology of Bacteria — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 11th MICROBIOLOGY — Chapter 7: Morphology of Bacteria, with answers and explanations. These are sample questions; the exam has its own separate question set.

What is the term used for bacteria that are spherical in shape?

A. Bacilli
B. Cocci ✓
C. Spirilla
D. Vibrio

Answer: B. Cocci
Cocci are spherical or oval-shaped bacteria, while bacilli are rod-shaped.

Which of the following structures is responsible for bacterial motility?

A. Capsule
B. Pili
C. Flagella ✓
D. Mesosome

Answer: C. Flagella
Flagella are whip-like appendages that provide locomotion to bacterial cells.

Which component is present in Gram-negative bacteria but absent or very thin in Gram-positive bacteria?

A. Teichoic acid
B. Peptidoglycan
C. Outer membrane ✓
D. Plasma membrane

Answer: C. Outer membrane
Gram-negative bacteria possess an outer membrane containing lipopolysaccharides that is absent in Gram-positive bacteria.

Compare Gram-positive and Gram-negative cell walls: which statement is correct?