Topic 4: How do molecules of life differ from non living matter?

Question 1

How do Sugars form Polysaccharides (Carbohydrates)?

Answer 1

Constructed by putting together smaller units
- Monosaccharides and sugars

Question 2

Where is the Glycosidic bond on a D-alpha-glucose?

Answer 2

1 to 4

Question 3

What is D-alpha-glucose used for?

Answer 3

Amylose (starch)
Long term food storage (helical chain)

Question 4

What is D-beta-glucose used for?

Answer 4

Cellulose
- structure (linear)

Question 5

How do Nucleotides form Polynucleotides (Nucleic acid)?

Answer 5

Created by joining nucleotides together using a condensation reaction.

Question 6

What does nucleic acid encode?

Answer 6

It encodes information

Question 7

What way is the sugar back bone read in Nucleic acid?

Answer 7

5’ to 3’

Question 8

Does Nucleic acid permit semi-conservative replication?

Answer 8

Yes

Question 9

How many bonds can Adenine and Thymine form?

Answer 9

2 Hydrogen bonds

Question 10

How many bonds can Cytosine and Guanine form?

Answer 10

3 Hydrogen bonds

Question 11

What reaction breaks down a polymer?

Answer 11

Hydrolysis

Question 12

What is a polymer, and what bond links it together?

Answer 12

A long molecule consisting of many similar or identical building blocks (monomers) linked by covalent bonds

Question 13

What reaction build a Polymer?

Answer 13

Condensation

Question 14

What reaction synthesises a Polymer?

Answer 14

Dehydration

Question 15

How are Polypeptides constructed?

Answer 15

By connecting Amino acids

Question 16

What reaction breaks down polypeptides?

Answer 16

Hydrolysis

Question 17

What can a polypeptide react with to form a peptide bond?

Answer 17

A Carboxylic acid on one end of the ,molecule and an Amine group on the other.