The enzyme that converts angiotensinogen to angiotensin I is: MCQ with Answer and Explanation

Explanation:
Helicase uses ATP to separate the hydrogen-bonded base pairs, creating the replication fork. Topoisomerase relieves supercoiling ahead of the fork. DNA polymerase synthesizes new DNA, ligase joins fragments. Helicase is essential for strand separation and replication initiation.

Explanation:
Dengue is transmitted by Aedes aegypti, which also spreads chikungunya, Zika, and yellow fever. Anopheles transmits malaria, Culex filariasis, tsetse sleeping sickness.

Explanation:
Digestion converts complex, insoluble food molecules into simple, soluble forms that can be absorbed. It involves mechanical action (chewing, churning) and enzymatic hydrolysis. Absorption is the uptake of nutrients, assimilation is incorporation into body tissues, egestion is elimination of undigested waste.