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Biological Molecules
Descrição
Mapa Mental sobre Biological Molecules, criado por Maddie Cuthbert em 08-12-2016.
Sem etiquetas
ocr
biology
biological molecules
chapter 3
a-level
as
water
carbohydrates
lipids
proteins
dna
biological bonding
structure of proteins
as level
Mapa Mental por
Maddie Cuthbert
, atualizado more than 1 year ago
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Criado por
Maddie Cuthbert
aproximadamente 8 anos atrás
108
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Resumo de Recurso
Biological Molecules
Bonds
Water
Bonding
Polar covalent
Hydrogen
Characteristics
Unusually high boiling point
It takes a lot of energy to make water gaseous
Ice is less dense than liquid water
When water is below 4 C, the H bonds fix the polar molecules further apart creating a rigid but open structure
Cohesive properties
Water moves as one mass because the molecules are attracted to each other
Its cohesive properties creates surface tension
Life
Solvent
Water acts as a medium for chemical reactions
The cytosol of prokaryotes and eukaryotes consists mainly of water
Efficient transport medium
Cohesion
Molecules stick together when travelling through the body
Adhesion and cohesion result in water exhibiting capilary action
Coolent
Buffers temperature changes in chemical reactions within the cells
Environment
Carbohydrates
Glucose
Monosaccharide
Alpha glucose
H above C1
OH below C1
Polar and soluble in water
Hydroxyl groups and water molecules
Glucose is dissolved in the cytosol of the cell
Beta glucose
OH above C1
H below C1
Condensation Reactions
Form glycosidic bonds between two glucose molecles
Produces a disaccaride (two monosaccharides) and a water molecule
Pentose monosaccharides are sugars that contain 5 carbon atoms
Ribose in RNA and deoxyribose in DNA
Starch and glycogen
Many alpha glucose molecules form starch
Amylose
Only 1-4 glycosidic bonds
Creates a helix
Lipids
Triglycerides
Saturated and unsaturated
Phospholipids
Sterols
Roles
Identification
Proteins
DNA
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