Lecture 5: Carbon and Macromolecules

Question 1

How many bonds does carbon make?

Answer 1

4, tetrahedral and flat structures.

Question 2

Lipids?

Answer 2

lipids store energy, insulate and protect, digest and absorb, nutrients, and hormone production.

Question 3

Lipids have variable structures?

Answer 3

Have both hydrophobic and hydrophilic characteristics in a single molecule.

Question 4

Fatty acids?

Answer 4

Fatty acids combine with glycerol which is related to glucose to form oils and fat molecules.

Question 5

Structure of a phospholipid

Answer 5

Has a hydrophilic head which contains choline, phosphate and glycerol. It has hydrophobic tails and a kink in the tail due to the cis double bond.

Question 6

DNA?

Answer 6

Essential for inheritance of genetic traits and involve components of nucleic acids that are covalently bonded together in a stable structure called ‘strand’.