Which of the following diseases is caused by the protozoan Plasmodium vivax?
A. Malaria
B. Amoebic dysentery
C. Sleeping sickness
D. Giardiasis
Answer: Option A
Solution (By JKExamLibrary)
Malaria is caused by Plasmodium species (P. vivax, P. falciparum, etc.) and transmitted by female Anopheles mosquitoes. P. vivax causes benign tertian malaria with 48-hour fever cycles. Amoebic dysentery is caused by Entamoeba histolytica, sleeping sickness by Trypanosoma, and giardiasis by Giardia. Malaria remains a major global health challenge.
Explanation:
Variant CJD is a fatal prion disease linked to consumption of beef from cattle with bovine spongiform encephalopathy (mad cow disease). Prions are misfolded proteins that induce other proteins to misfold. Not viral, bacterial, or fungal.
Explanation:
The Philadelphia chromosome is a specific genetic abnormality found in the bone marrow cells of most patients with Chronic Myelogenous Leukemia (CML). It is formed by a reciprocal translocation between the long arms of chromosome 9 and chromosome 22, denoted as t(9;22). This translocation fuses the BCR gene on chromosome 22 with the ABL1 gene on chromosome 9, creating a mutant BCR-ABL1 fusion protein with constitutive tyrosine kinase activity, driving uncontrolled cell division.
No comments yet. Be the first to start the discussion!