T3 - PROPERTIES OF BIOMOLECULES

Question 1

properties of biomolecules and interactions

Answer 1

the molecule chemical properties of a biomolecules effect how they react and interact with each other- effecting the overall function
-electronegativity
-hydrophobic and hydrophilic
-isomerism

Question 2

glucose isomers

Answer 2

alpha glucose
- OH on carbon 1 is below the right

beta glucose
- the OH on carbon 1 is inverted and is above

this isomerism changes the structure of the polysaccharide that forms - beta forms sheets whilst alpha forms helixes

this evidently means that they are found in different parts of the cell and will have different purposes
- helix means can be coiled and condensed so great usage as an energy storer
- sheets means strong and uniformed so great for protecting cells - cell wall

Question 3

glucose

Answer 3

has alcohol and aldehyde group
- OH and C=O are polar so glucose is polar/strongly hydrophilic
only the D form of glucose is used

Question 4

amino acids

Answer 4

the side chains cause the amino acid to have different chemical properties - charged, not chargered, polar , apolar

Question 5

purine

Answer 5

2 ring structure
- adenine
-guanine

Question 6

pyrimidine

Answer 6

one ring structure
- thymine
-cytosine
-uracil

Question 7

Deoxyribose vs Ribose

Answer 7

D has no OH on the 2nd carbon whilst R does

Question 8

nucleotides

Answer 8

made up of nitrogenous base, phosphate and pentose sugar - deoxyribose or ribose

overall the molecule is negatively charged and hydrophillic