CHƯƠNG 7:Microbial growth

1.Which process is the most common method of reproduction in bacteria?

• Budding

• Sporulation

• C. Binary fission
  

• • D. Conjugation

2.The function of FtsZ protein in bacteria is to:

• A. Aid in DNA replication
  

• B. Form the Z ring during cell division
  

• C. Control protein synthesis
  

• • D. Detect environmental stress

3.During which growth phase are cells most metabolically active?

• A. Lag phase
  

• B. Log phase
  

• C. Stationary phase
  

• • D. Death phase

4.Which cytoskeletal protein helps determine cell diameter and elongation in rods?

• Tubulin

• MreB

• Crescetin

• FtsK

5.A neutrophile grows best at which pH range?

• A. 1–3
  

• B. 5.5–7
  

• C. 8.5–11
  

• • D. 0–5

6.Which organism grows best at temperatures between 55°C and 85°C?

• Mesophile

• Psychrophile

• Thermophile

• Psychrotroph

7.An aerotolerant anaerobe:

• A. Dies in the presence of oxygen
  

• B. Grows only in oxygen
  

• C. Grows with or without oxygen
  

• • D. Requires 2–10% oxygen

8.Compatible solutes help microbes to:

• A. Perform conjugation
  

• B. Adapt to hypertonic conditions
  

• C. Increase temperature tolerance
  

• • D. Resist UV damage

9.A biofilm is defined as:

• A. A single bacterial colony
  

• B. A virus-infected community
  

• C. A complex microbial community attached to a surface
  

• • D. A layer of endospores

10.What is the typical shape of Vibrio bacteria?

• Rod

• Spiral(xoắn ốc)

• C. Comma-shaped
  

• Spherical