Which of the following is NOT caused by bacteria?
Cholera
Gonorrhoea
Tuberculosis
Onchoceriasis
Typhoid
Correct answer is D
Onchocerciasis is another name for river blindness. It is caused by the NEMATODE, Onchocerca volvulus.
B, A, AB
O, A, B
B, AB, AB
A, O, A
Correct answer is D
No explanation has been provided for this answer.
The DNA molecule is a chain of repeating
nucleosides
nitrogenous bases
sugar phosphates
nucleotides
Correct answer is D
No explanation has been provided for this answer.
A person with type O blood can donate to a patient with type A because the donor's blood
lacks antigens
lacks anti-A antibodies
lacks anti-B antibodies
has both anti-A and anti-B antibodies
Correct answer is A
No explanation has been provided for this answer.
The primary and secondary hosts respectively of bilharzia are
fish and man
man and dog
man and snail
fish and snail
Correct answer is C
The intermediate hosts of Schistosoma spp. (Bilharziasis) are various species of freshwater snails. Eggs are shed from the human host in feces or urine. Under optimal conditions in the environment, the eggs hatch and release miracidia, which swim and penetrate specific snail intermediate hosts.