Module 2 - Section 2 - Biological Molecules

HideShow resource information
What is the Polarity of Water?
Partially negative oxygen and partially positive hydrogen, as the electrons are shared unequally.
1 of 23
How do Hydrogen Bonds form between Water Molecules?
Partially positive hydrogen is attracted to the partially negative oxygen, forming weak h-bonds.
2 of 23
What are the Properties of Water?
High specific heat capacity. High latent heat of evaporation. Very cohesive. Lower density when solid. Good solvent.
3 of 23
What are Monosccharides of Carbohydrates?
Glucose: alpha and beta. Ribose. (Ensure you know the diagrams)
4 of 23
How are Polysaccharides of Carbohydrates formed?
When more than two monosaccharides form glycosidic bonds through a condensation reaction.
5 of 23
What is the Function of the Carbohydrate Starch?
Energy store for plants. Excess glucose stored as starch. Made of amylose and amylopectin
6 of 23
What is the Function of the Carbohydrate Glycogen?
Main energy store in animals. Store excess glucose as glycogen. Branched and insoluble.
7 of 23
What is the Function of the Carbohydrate Cellulose?
The cell wall in plants. Unbranched beta-glucose linked together by hydrogen bonds.
8 of 23
What are Triglycerides?
One molecule of glycerol with three fatty acids, synthesised by ester bonds between fatty acids and glycerol.
9 of 23
What is Esterification?
Condensation reaction where triglycerides are synthesised to form ester bonds.
10 of 23
What are the differences between Saturated fatty acids and Unsaturated fatty acids?
Unsaturated have a double bond , whereas saturated don't.
11 of 23
What are Phospholipids?
A glycerol molecule attached to two fatty acids and a phosphate group.
12 of 23
What is Cholesterol ?
Hydrocarbon ring structure is attached to a polar hydroxyl group (OH) and a hydrocarbon tail.
13 of 23
What are the functions of Triglycerides?
Energy store in plants and animals, contain twice as much energy as carbs. Are insoluble so don't swell and form a Shield.
14 of 23
What are the functions of Phospholipids?
Make up phospholipid bilayer in cell membranes. So control what substance are entering cell.
15 of 23
What are the functions of Cholesterol?
Interact with phospholipid bilayer to strengthen cell membrane, by packing them closer together to decrease fluidity and make it more rigid.
16 of 23
What are Proteins?
A polypeptide chain of amino acids joined together to form a specific shape to carry out a specific function.
17 of 23
What is the structure of a Amino Acid?
A carboxyl group and a amino group attached to a carbon which is also attached to a hydrogen and a R-group
18 of 23
How are Amino Acid Chains Formed?
A condensation reaction between amino acids form peptide bonds
19 of 23
What is Protein Structure?
Primary-Peptide chain, Secondary-Hbonds form alpha helix or beta pleated sheet, Tertiary Bonds and interactions cause further folding and coiling, Quaternary-Peptide chains held together to form3D structure.
20 of 23
What are Globular Proteins?
Round and compact with hydrophilic Rgroup, are soluble be easily transported. Eg. Haemoglobim, Insulin, Amylase.
21 of 23
What are Fibrous Proteins?
Tough, Rope shaped proteins that aren't very reactive. Eg. Collagen, Keratin, Elastin
22 of 23
What are Inorganic Ions?
A atom with a electrical charge that doesn't contain a carbon. Need to know Cations (+) and Anions(-).
23 of 23

Other cards in this set

Card 2

Front

How do Hydrogen Bonds form between Water Molecules?

Back

Partially positive hydrogen is attracted to the partially negative oxygen, forming weak h-bonds.

Card 3

Front

What are the Properties of Water?

Back

Preview of the front of card 3

Card 4

Front

What are Monosccharides of Carbohydrates?

Back

Preview of the front of card 4

Card 5

Front

How are Polysaccharides of Carbohydrates formed?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Biological molecules resources »