Bilogical Molecules Flashcards
What is the structure of water?
Oxygen is slightly negative as the electrons are more distributed (delta negative)
Hydrogen in slightly positive as the electrons are less distributed (delta positive)
What causes a hydrogen bond to be formed in water?
The slight difference in charge between the hydrogen and oxygen of two water molecules
What are the 6 properties of water?
1) ice is less dense than water
2) high surface tension
3) Strong cohesive properties
4) Colourless with High transmittion
5) Liquid at room temp
6) High latent heat of evaporation
What are carbohydrates made from?
Monosaccharides, disaccharides, Polysaccharides.
Name a type of monosaccharide?
Glucose
What are the two forms of glucose?
Alpha and Beta
What are the bonds called between two monosaccharides and what type of reaction is it?
Glycosidic bonds by a condensation reaction.
What is the reverse of a condensation reaction
Hydrolysis
Name 3 polysaccharides?
Starch, cellulose and glycogen
Explain what starch is?
- Main energy storage material in plants to get energy. Plants store excess glucose as starch.
Name 2 examples of alpha glucose?
Amylose and Amylopectin
Is starch soluble or insoluble in water?
Insoluble (can’t dissolve)
What is amylose?
Long, unbranched chains and alpha glucose.
What is amylose good for?
Storage (as you can fit more into one place)
What is amylopectin?
Long, unbranched chain of alpha glucose