CBSE
Multiple Choice QuestionsRetrovirus have genetic material
DNA only
RNA only
DNA or RNA only
either DNA or RNA
Which group of three of the following five statements (A- E) contain is all three correct statements regarding beri- beri?
A. A crippling disease prevalent among the native population of sub- Sahara Africa.
B. A deficiency disease caused by lack of thiamine (vitamin- B1).
C. A nutritional disorder in infants and young children when the diet is persistently deficient in essential protein.
D. Occurs in those countries where the staple diet is polished rice.
E. The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.
A, B and D
B, C and E
A, C and E
B, D and E
The larvicidial fish used in biocontrol of mosquitoes
Gambusia
Hilsa
Scatophagus
Gold fish
Streptomycin is obtained from
Streptomyces griseus
S. aureofaciens
S. venezuelae
S. ramosus
Yersinia pestis is responsible for
syphilis
whooping cough
plague
leprosy
Lymphocytes are formed by
plasma cells
mast cells
liver cells
none of these
Which insect is useful for us
Periplaneta
Musca
Bombyx
Mosquitoes
A patient is generally advised to specially, consume more meat, lentils, milk and eggs in diet only when he suffers from
kwashiorkor
rickets
anaemia
scurvy
AIDS is caused by HIV that principally infects
all lymphocytes
activator B cells
T4 lymphocytes
cytotoxic T cells
Schizogony occurs in
RBC of human
intestine of parasite
liver of human
liver of parasite
