Lesson 9: Amino acids/ DNA Flashcards
1
Q
What is “DNA?”
A
- DNA (deoxyribonucleic acid) is a large molecule essential for life.
- DNA encodes genetic instructions for the development and functioning of living organisms and viruses.
2
Q
What are most DNA molecules made up of?
A
- Most DNA molecules are two polymer chains, made from four different monomers - called nucleotides, in the form of a double- helix.
3
Q
Give 3 naturally occuring polymers that are essential to life (other than DNA)
A
1.) Proteins
2.) Starch
3.) Cellulose
4
Q
Finish the sentence
Cellulose is a polymer made of many different monomer units called ………
A
- Glucose
5
Q
How many functional groups do amino acids have in a molecule?
A
- Amino acids have two different functional groups in a molecule.
6
Q
What do THE SAME amino acids reacting together by condensation polymerisation produce?
A
- Produces polymers known as: “polypeptides.”
7
Q
What is the formula for amino acid: glycine?
A
H₂NCH₂COOH
8
Q
Give the condensation reaction of glycine that forms a polypeptide.
A
H₂NCH₂COOH + H₂NCH₂COOH +H₂NCH₂COOH …… (as many glycine as you want) —.> (-HNCH₂COO-)n + H₂O
9
Q
How are proteins produced?
A
- **DIFFERENT **amino acids combined in the same chain.
