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.
Human height is an example of a feature which depends on both
genotype and phenotype
genetic and environmental factors
mother's genotype and environmental factor
phenotipic and environmental factors
Correct answer is B
No explanation has been provided for this answer.
Environmental pollutants which can work through the media of water, soil, and air include
carbon monoxide
noise
sulphur(IV)oxide
smoke
Correct answer is C
No explanation has been provided for this answer.
Some of the diseases caused by bacteria are
tuberculosis, gonorrhoea, and syphilis
tuberculosis, gonorrhoea, and AIDS
Poliomyelitis, syphilis, and gonorrhoea
AIDS, cholera, and tuberculosis
Correct answer is A
No explanation has been provided for this answer.