Every time you see the ATP starburst or lighting symbol you should relate it to
which concept:

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.

What are genotypes? what are phenotypes?

Why is excretion necessary to maintain homeostasis?