The 'Hormone Atrial Natriuretic Peptide' (ANP) is secreted by the heart in response to high blood pressure and primarily acts to: MCQ with Answer and Explanation

Explanation:
Bt brinjal is a transgenic eggplant (brinjal) developed by inserting the cry1Ac gene from the soil bacterium Bacillus thuringiensis (Bt). This gene codes for a crystal protein that is toxic to the larvae of the brinjal fruit and shoot borer (Leucinodes orbonalis), a major pest that causes significant yield loss. When the insect ingests the plant tissue, the alkaline gut activates the toxin, creating pores in the gut lining and killing the pest.

Explanation:
The nucleus is bounded by a double membrane called the nuclear envelope, not a single membrane. It houses the nucleolus, which is the site of ribosomal RNA synthesis. The nuclear envelope is perforated by nuclear pores that regulate the bidirectional transport of molecules, including the export of mRNA to the cytoplasm. Thus, statements 2 and 3 are correct.

Explanation:
Vaccination involves the introduction of a weakened, killed, or partial pathogen (antigen) into the body. This stimulates the immune system to produce its own antibodies and memory cells without causing the disease. Since the body actively produces the immune response due to an artificial stimulus, it is called artificial active immunity.