1st Year Biology Chapter 2 TestBacteria and Viruses

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. What surrounds the new DNA during endospore formation?

   1. A single cell wall

   2. A protein layer

   3. Two membrane

   4. One lipid membrane

2. How does HIV replicate inside host cells?

   1. By transcription of its RNA

   2. By reverse transcription of RNA into DNA

   3. By splitting the host cell into two

   4. By using host DNA directly

3. The HIV capsid contains:

   1. Single-stranded DNA and reverse transcriptase

   2. Single-stranded RNA and reverse transcriptase

   3. Double-stranded DNA and integrase

   4. Double-stranded RNA and RNA polymerase

4. In bacterial cells, respiration occurs at:

   1. Mitochondria

   2. Cell membrane

   3. Ribosomes

   4. Endoplasmic reticulum

5. Which bacteria moves using an axial filament?

   1. Bacilli

   2. Spirilla

   3. Spirochetes

   4. Cocci

6. Bacteria belong to which domain in the three-domain system?

   1. Archaea

   2. Eukarya

   3. Monera

   4. Bacteria

7. When do endospore germinate?

   1. During nutrient depletion

   2. When conditions are unfavorable

   3. Under favorable conditions

   4. At high temperature

8. What type of bacteria are used in the creation of biopesticides?

   1. Gram-positive soil-dwelling bacteria

   2. Antibiotic-producing bacteria

   3. Nitrogen-fixing bacteria

   4. Photosynthetic bacteria

9. What protein acts as a pore in Gram-negative bacteria?

   1. Actin

   2. Myosin

   3. Porin

   4. Tubulin

10. What are the protein Subunits that make up a virus's capsid called?

    1. Capsomeres

    2. Enzymes

    3. Receptors

    4. Nucleotides