VIRUSES in EUKARYOTES Online Test and Answers Pdf Download :-
These are very useful & Most Asked Questions in your certification Exam. Read all Online Mock Test Exam Question Bank for Beginners Freshers & Experienced.
1. Which of the following is the agent associated with the development of neurodegenerative disease in livestock and humans?
A. Prions
B. Viroids
C. virions
D. Virinos
Answer: A
2. __________is probably the most important characteristic for classification of viruses in eukaryotes.
A. Host preference
B. Morphology
C. Physical nature of virion constituents
D. Chemical nature of virion constituents
Answer: A
3. The __________ of the influenza-enveloped virus appear to be involved in attachment to the host cell receptor site.
A. fimbriae
B. flagellae
C. hemagluttinin
D. neuraminidase
Answer: C
4. Intracellular structures formed during many viral infections, called __________ , which can directly disrupt cell structure.
A. prokaryotes
B. chromosomal disruptions
C. inclusion bodies
D. cytocidal bodies
Answer: C
5. Viral RNA is replicated in the host cell
A. cytoplasmic matrix
B. nucleus
C. mitochondria
D. lysozomes
Answer: A
VIRUSES in EUKARYOTES Objective type Questions with Answers
6. Which family has received most interest in their development as a biological control agent against insects?
A. Reoviridae
B. Baculoviridae
C. Iridoviridae
D. Poxviridae
Answer: B
7. In cancer, the reversion of cells to a more primitive or less differentiated state is called
A. neoplasia
B. anaplasia
C. metastasis
D. oncogenic
Answer: B
8. Which of the following has been linked to Kaposi’s sarcoma?
A. Epstein-Barr virus
B. Human T-cell lymphotropic virus
C. Human papilloma virus
D. Human herpes virus 8
Answer: D
9. Virulent and nonvirulent viruses may not
A. inhibit host cell DNA synthesis
B. inhibit host cell RNA synthesis
C. stimulate host cell macromolecule synthesis
D. degrade host cell DNA
Answer: D
10. The hepadnaviruses such as hepatitis B virus are quite different from other DNA viruses with respect to genome replication. These replicate their DNA using
A. DNA-dependent DNA polymerase
B. reverse transcriptase
C. Rnase H
D. DNA ligase
Answer: B
11. Which of the following virus is always detectable after infections?
A. Hepatitis B virus
B. Herpes simplex virus
C. Varicella-zoster virus
D. Cytomegalovirus
Answer: A
12. Viroids are composed of
A. single-stranded DNA
B. double-stranded DNA
C. single-stranded RNA
D. double-stranded RNA
Answer: C