Biology 12 - Biological Molecules
Questions and Answers
what is Hydrolysis? - Answer-adding water to break down organic polymers into
monomers.
what is Dehydration Synthesis? - Answer-removing water to join monomers and form
organic polymers.
what are Carbohydrates? - Answer-surgars and starches. made up of 1 or more
monomers called monosaccharides.act as energy storage, structual components, and
cell to cell communication for identification.
what are Monosaccharides? - Answer-single chain structures containting 3-7 carbons.
what are Disaccharides? - Answer-formed when 2 monosaccharides join via
dehydartion synth.
what are Polysaccharides? - Answer-long carbon chains.
Starches - Answer-many glucose monomers in straight chains with only a few branched
chains. storage form of glucose inside plant cells.
Glycogen - Answer-highly branched large molecules. storage form of glucose. stored in
muscle and liver cells.
whats the difference between Glycogen and Starch? - Answer-Glycogen branches more
than Starch.
Cellulose - Answer-found in plant cell walls. type of fibre that helps move feces through
colon. is a linear molecule that alternates ester bonds.
what are Lipids? - Answer-insoluble in polar solvents. contain C, O and H.
what are the main functions of Lipids? - Answer-long term energy storage. insulate
against heat loss. protective cushion around major organs. storage of fat soluble
vitamins: E, K, A & D.
what are the 3 main types of Lipids? - Answer-Triglycerides, Phospholipids & steroids.
what are Tryglycerides? - Answer-neutral fat. fats when solid, oil when liquid. produced
when 1 glycerole and 3 fatty acid chains join via dehydration synth.
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