Lesson 1: Biomolecules

Question 1

Biomolecules

Answer 1

Any molecule that can be produced by a biological molecule

Question 1

4 major Biomolecules

Answer 1

-Carbohydrates
-Lipids
-Proteins
-Nucleic acids

Question 2

Carbohydrate uses

Answer 2

-Metabolism
-Cell membrane
-Energy storgae
-Formation of other biomolecules (RNA)

Question 3

Lipid Uses

Answer 3

Cell membrane- phospholipid layer

Question 4

protein summary

Answer 4

-Central dogma of moleculea geneteics: How information flows from DNA to a 3D polypeptide
-Is made from 20 L-amino acids
-Sequence and type of amino acid determines protein function

Question 5

Nucleic acids

Answer 5

-Purines and pyramidines
-Ribose sugar

Question 6

Enzymes

Answer 6

Enzyme activity is heavily dependant on the pH of their environment
-This property emerges from the type of amino acids they are made of.
eg. lysine, arginine and histidine are positively charged

Question 7

Chromophore

Answer 7

It an intrinisc property of a biomolecule
-It is the ability of a molecule to absorb light at a particular wavelength
-we can use the differences in ability to absorb light to distinguish between different biomolecules

Question 8

Isomers

Answer 8

Molecules with the same chemical formula but different structures which leads to different chemical behaviours
Most biological molecues are chiral and so have different isomer

Question 9

importance of isomers

Answer 9

Very NB property in pharmalogical field
-enzymes in glycolysis can only recognise d-glucose not l-glucose

Question 10

stereoisomers

Answer 10

Same molecular formula and connectivity but differ in spatial arrangement

Question 11

Consistutional Isomers

Answer 11

Some molecular formula but different connectivity

Question 12

Types of isomers

Answer 12