Which is the correct pairing of a vitamin and its function?
a. vitamin D – visual pigments
b. B vitamins – make collagen
c. vitamin A – increases calcium uptake
d. vitamin C – protecting cell membranes
e. vitamin K – blood clotting

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.

Which of these parts of the membrane large moecules pass through it ?

What do genes contain the code for?