As promised, here is some tips on how you should answer your Biology Paper 2:

Pay attention to spelling. Inaccurate spelling will be marked as wrong.
Acronyms are allowed. For instance DNA, ATP , RNA
Use scientific terms as much as possible. General terms like ‘carries’, ‘give’, ‘attracted’ should be avoided.
Use scientific sentences.
Wrong cancels right rule.
Don’t repeat the same answer twice.
Explain means you should give reason.

Corresponding questions;  Please give facts, explain the facts, and the consequence.

E.g:

A women who is a heavy smoker becomes pregnant. …