Biochemistry Chapter 1: Biochemistry Basics

Question 1

How many double bonds in Oleic Acid

Answer 1

C18:1

Question 2

Number of double bonds in Linoleic Acid

Answer 2

C18:2

Question 3

Number of double bonds in Linolenic Acid

Answer 3

C18:3

Question 4

Meso compounds

Answer 4

Meso compounds have an internal plane of symmetry,

Question 5

Amide vs amine

Answer 5

Question 6

Carboxylation

Answer 6

Adding CO2 as a substrate

Question 7

Hydrolysis vs hydroxylation

Answer 7

Hydrolysis (ie something gets hydrolyzed) is the breaking of a bond by adding water (H₂O), while hydroxylation is the addition of a hydroxyl (-OH) group to a molecule.

Question 8

Quenching

Answer 8

stopping or neutralizing a reactive species

Question 9

Carboxylic acid anhydrides react with water to form

Answer 9

carboxylic acids

Question 10

Why Do Phospholipids Need Long Fatty Acid Chains?

Answer 10

✅ Membrane Stability → Long chains strengthen hydrophobic interactions.
✅ Amphipathic Nature → Short chains wouldn’t provide enough hydrophobicity for bilayer formation.
✅ Typical Lengths → 14–22 carbons (e.g., C16 palmitic, C18 stearic, C18 oleic).
✅ Phospholipids like PE require long tails for proper membrane integration.

Question 11

Steriod hormone structure

Answer 11

6-6-6-5 ring