Explanation

Explanation

Intradermal injection means the drug is injected into the dermis, the layer just beneath the epidermis.

It is commonly used for allergy tests and tuberculosis screening.

Explanation

Artemisinin is a specific anti-protozoan drug used primarily to treat malaria, a protozoal disease caused by Plasmodium species.

It works by producing free radicals that damage protozoan proteins and membranes.

Explanation

Magnesium sulfate acts as a muscle relaxant by blocking neuromuscular transmission.

It is used clinically to relieve muscle spasms and prevent seizures in certain conditions.

Explanation

Explanation

Explanation

A greater amount of DNA in a cell of an individual typically indicates a highly evolved organism.

Complex organisms tend to have larger genomes with more genes, resulting in a larger amount of DNA compared to simpler organisms.

Explanation

Explanation

Explanation

In cows, the normal presentation during birth is anterior—forelimbs and head come out first.

This position ensures easier passage through the birth canal and reduces risk of complications.