Which of the following is the smallest known virus:
(A) Hepatitis virus
(B) Retrovirus
(C) Polio virus
(D) Pox virus
An isolated virus is not considered living since it________________?
(A) Separates in to two inner parts
(B) Can not metabolize
(C) Rapidly looses its Genome chemical inert
(D) Is coated with an air tight shield
Complex symptoms like severe pneumonia vascular tumor sudden weight loss swollen lymph nodes and immune deficiency are features of:
(A) Polio
(B) Hepatitis
(C) AIDS
(D) HIV
Bacteriopahage that infect E. coli are called_____________?
(A) M type
(B) N type
(C) T type
(D) S type
Which of the following statement about AIDS is incorrect:
(A) is a host specific disease
(B) An infected mother cannot pass the virus to her baby.
(C) Results in enlargement of lymph nodes
(D) Can be prevented.
Attachment of the bacteriophage with the receptor site on the bacterial cell wall involves_______________?
(A) Strong covalent bond between virion and the receptor site.
(B) Week chemical unior between them
(C) Both A and B depending upon the phage
(D) None of these
Carbohydrates, fats & proteins are essential for_______________?
(A) Metabolic processes of an organism
(B) Providing energy
(C) Formation of sturctures
(D) All of these
Pepsinogen is produced from__________?
(A) Mucous cells
(B) Parietal cells
(C) Zymogen cells
(D) All of these
In the lytic cycle of bacteriophage the host DNA is__________?
(A) Replicated
(B) Turn off by the protein coat.
(C) Digested into its nucleotides
(D) Turned on by the removal of the protein coat