 
			 
			MCQOPTIONS
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				This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. | Which of the following are a Gram negative bacteria? | 
| A. | Neisseria gonorrheae | 
| B. | Mycoplasma pneumonia | 
| C. | Cornybacterium diptheriae | 
| D. | Streptococcus pyogenes | 
| Answer» B. Mycoplasma pneumonia | |
| 2. | Exotoxins are produced by _______________ | 
| A. | All prokaryotes | 
| B. | Gram positive bacteria | 
| C. | Gram negative bacteria | 
| D. | Archaea | 
| Answer» C. Gram negative bacteria | |
| 3. | Which of the following is absent in Gram- negative bacteria and present in Gram- positive bacteria? | 
| A. | Teichoic acids | 
| B. | Periplasmic space | 
| C. | Outer membrane | 
| D. | Lipopolysaccharide | 
| Answer» B. Periplasmic space | |
| 4. | Which of the following is not a difference between cilia and flagella? | 
| A. | Cilia is short hairlike; flagella is long thread-like | 
| B. | Nexin present in cilia; Nexin absent in flagella | 
| C. | Axoneme present in cilia; Axoneme absent in flagella | 
| D. | Rapid rotational motion of Flagella; Sweeping slow movement of cilia | 
| Answer» D. Rapid rotational motion of Flagella; Sweeping slow movement of cilia | |
| 5. | Which is the main building block of cilia? | 
| A. | Tubulin | 
| B. | Nexin | 
| C. | Dyenin | 
| D. | Actin | 
| Answer» B. Nexin | |
| 6. | F-plasmid contains ______________ | 
| A. | Only OriV | 
| B. | Only OriT | 
| C. | Both OriV and OriT | 
| D. | None of the mentioned | 
| Answer» D. None of the mentioned | |
| 7. | Nitrogen fixation can be done by ______________ | 
| A. | All prokaryotes | 
| B. | Certain cyanobacteria | 
| C. | Certain archaebacteria | 
| D. | None of the mentioned | 
| Answer» C. Certain archaebacteria | |
| 8. | Escherichia coli and Vibrio cholerae are ________________ | 
| A. | lophotrichous; monotrichous | 
| B. | amphitrichous; lophotrichous | 
| C. | peritrichous; monotrichous | 
| D. | peritrichous; amphitrichous | 
| Answer» D. peritrichous; amphitrichous | |