پروکیریوٹس اور وائرس

Bacteria reproduce mainly by:

• 1 Meiosis
• 2 Mitosis
• 3 Binary fission
• 4 Spore formation only

A virus consists of a protein coat and:

• 1 Genetic material
• 2 A cell wall
• 3 A nucleus
• 4 Mitochondria

A virus that infects bacteria is a:

• 1 Bacteriophage
• 2 Retrovirus only
• 3 Fungus
• 4 Prion

Gram positive bacteria stain:

• 1 Green
• 2 Purple
• 3 Pink or red
• 4 Not at all

Cyanobacteria carry out:

• 1 Nothing
• 2 Only fermentation
• 3 Only respiration
• 4 Photosynthesis

Which structure do viruses lack?

• 1 Genetic material
• 2 Cell membrane
• 3 Protein coat
• 4 Nucleic acid

Penicillin kills bacteria by affecting their:

• 1 Mitochondria
• 2 Ribosomes only
• 3 Nucleus
• 4 Cell wall

Spherical bacteria are called:

• 1 Vibrios
• 2 Bacilli
• 3 Spirilla
• 4 Cocci