Which of the following diseases is transmitted by the bite of an infected female Anopheles mosquito? MCQ with Answer and Explanation

Which of the following diseases is transmitted by the bite of an infected female Anopheles mosquito?
A. Filariasis
B. Dengue
C. Chikungunya
D. Malaria
Answer: Option D
Solution (By JKSSB Mock Tests)
Malaria, caused by Plasmodium parasites, is transmitted by the female Anopheles mosquito. Dengue and chikungunya are transmitted by Aedes mosquito, filariasis by Culex mosquito. Malaria remains a major global health concern.

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Practice More Biology Questions

Question #1
Consider statements about evolution: 1. Evolution is a change in allele frequencies over time. 2. Speciation is the formation of new species. 3. Evolution always leads to more complex organisms. Which are correct?
A. 1 and 2 only
B. 1 and 3 only
C. 2 and 3 only
D. 1, 2 and 3

Correct Answer: Option A


Explanation:
Evolution, at its most fundamental genetic level, is defined as the change in the frequency of alleles within a population over successive generations. Speciation is the evolutionary process by which populations evolve to become distinct, reproductively isolated species. Evolution does not have a predetermined goal or direction towards complexity; it simply results in adaptation to the current environment, which can sometimes lead to simpler forms (like parasites losing complex structures). Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology
Question #2
Assertion (A): The Krebs cycle occurs in the mitochondrial matrix.
Reason (R): The enzymes for the Krebs cycle are soluble in the matrix.
A. Both A and R are true, but R is not the correct explanation.
B. A false, R true.
C. Both A and R are true, and R is the correct explanation.
D. A true, R false.

Correct Answer: Option C


Explanation:
The mitochondrial matrix contains all Krebs cycle enzymes (except succinate dehydrogenase). Thus, the location is due to enzyme presence. R correctly explains A.

This question belongs to: Science Biology
Question #3
The structure that conducts nerve impulses away from the cell body is the:
A. Dendrite
B. Synaptic terminal
C. Soma
D. Axon

Correct Answer: Option D


Explanation:
The axon is a long process that transmits action potentials from the soma to the target cell (neuron, muscle, or gland). Dendrites receive signals, soma is the cell body, synaptic terminals release neurotransmitters.

This question belongs to: Science Biology