Which one of the following is NOT transmitted by Aedes mosquitoes?
a) Malaria
b) Yellow fever virus
c) Dengue fever virus
d) Chikungunya virus
Ans: a) Malaria
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Any microorganism that spends a portion of its life associated with another organism of a different species is engaged in
A. parasitism. B. synergy. C. commensalism. D. symbiosis.
What is the correct rank order for relative amount of water (most to least) required for excretion of the primary nitrogenous wastes generated by different animals?
A. ammonia ? urea ? uric acid B. uric acid ? ammonia ? urea C. urea ? uric acid ? ammonia D. ammonia ? uric acid ? urea E. urea ? ammonia ? uric acid
A person goes to the doctor and is told his blood pressure is 90/60 and his pulse is 80. Which of the following is FALSE?
A) Mean arterial pressure is 70 mm Hg. B) Diastolic pressure is 60. C) Systolic pressure is 90 mm Hg. D) Pulse pressure is 80 mm Hg. E) Heart rate is 80.
In DNA replication, RNA primer is necessary because
A. DNA synthesis starts and stops many times before completed. B. DNA synthesis begins at multiple origins of replication. C. the two strands of a replicating helix must make a full rotation to unwind. D. DNA polymerase is unable to initiate a new polynucleotide chain.