Virus - Mock Test 9

Question 81

Which of the following statement is not true for retroviruses

A) Retroviruses carry genes for RNA-dependent DNA polymerase B) The genetic material in mature retroviruses is RNA C) Retroviruses are causative agents for certain kinds of cancer in man D) DNA is not present at any stage in the life cycle of retroviruses

---

No Details

Question 82

Tobacco mosaic virus is a tubular filament of size

A) 300 × 10 nm B) 300 × 5 nm C) 300 × 20 nm D) 700 × 30 nm

---

No Details

Question 83

Which statement is correct for bacterial transduction

A) Transfer of some genes from one bacteria to another bacteria through virus B) Transfer of genes from one bacteria to another bacteria by conjugation C) Bacteria obtained its DNA directly D) Bacteria obtained DNA from other external source

---

No Details

Question 84

Cauliflower mosaic virus contains

A) ss RNA B) ds RNA C) ds DNA D) ss DNA

---

No Details

Question 85

Interferons are synthesized in response to

A) Mycoplasma B) Bacteria C) Viruses D) Fungi

---

No Details

Question 86

During viral infection the protein formed in host cells to resist is

A) Interferon B) Antitoxin C) Antibody D) Histone

---

No Details

Question 87

Transduction in bacteria carried out by

A) Bacterio phage B) BGA C) Mycoplasma D) Rickettssiae

---

No Details

Question 88

Nucleic acid in HIV

A) ss RNA B) ds RNA C) ss DNA D) ds DNA

---

No Details

Question 89

Which of the following is true for a virus

A) That a virus does not possess D S DNA B) That a virus does not possess membranes of lipoproteins C) That a virus does not synthesize enzyme D) That a virus does not possess any enzyme

---

No Details

Question 90

The site where the protein coat ( capsid ) is synthesized is

A) Plasma membrane of the host B) Mitochondria of the host C) Ribosome of the host D) RNA of the virus

---

No Details