1st Year Biology Chapter 5 Test05. Acellular Life

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

1. Bacteriophage infects only:
   1. Plants
   2. Animals
   3. Bacteria
   4. Fungi
2. The glycoprotein that helps HIV attach to the host cell is:
   1. gp41
   2. gp120
   3. gp80
   4. gp60
3. Which of the following is a DNA virus?
   1. Influenza virus
   2. AIDS virus
   3. Bacteriophage
   4. Rubella virus
4. HIV is treated with:
   1. Antibiotics
   2. Antiviral therapy
   3. Antiretroviral therapy (ART)
   4. Vaccination
5. Which of these is a true statement?
   1. Viruses carry with them their own ribosome for protein formation
   2. New viral ribosomes form after viral DNA enters the cell
   3. Viruses use the host ribosomes for their own needs
   4. Viruses do not need ribosomes for protein formation
6. Hepatitis E is transmitted by:
   1. Blood transfusion
   2. Mosquito bite
   3. Faecal-oral route
   4. Airborne droplets
7. Capsomeres are:
   1. Host receptors
   2. Viral enzymes
   3. RNA molecules
   4. Subunits of capsid
8. The virus that attacks bacteria is called:
   1. Bacteriophage
   2. Retrovirus
   3. HIV
   4. Influenza virus
9. Viroids can be transmitted through:
   1. Airborne droplets
   2. Mechanical damage, seed, pollen, or biological vectors
   3. Water only
   4. Human contact
10. Who discovered the tobacco mosaic virus?
    1. Pasteur
    2. Iwanowsky
    3. Stanley
    4. Chamberland