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law of conservation mass
balancing chemical reactions
biomolecules
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GAY LUSSAC'S LAW
science gasses > types of chemical reactions > law of conservation mass > balancing chemical reactions > biomolecules
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Biomolecules
will be the topic for weeks 3 and
4
of grade 10 science
Biomolecule
Any molecule that is produced by a living organism and includes large macromolecules such as proteins,
polysaccharides
,
lipids
and nucleic acids
Biomolecules
are obtained from
food
Main types of biomolecules
Carbohydrates
Proteins
Nucleic
acids
Lipids
Carbohydrates
The primary energy source of our body, which are
sugars
Monomer
The
building block
or smaller unit from which
larger
molecules are made
Monosaccharides (simple sugars)
Glucose
Fructose
Galactose
Disaccharides
Double
sugars
formed by combining two
monosaccharides
Disaccharides
Maltose
Lactose
Sucrose
Polysaccharides
Complex
sugars
made up of many
monosaccharides
Polysaccharides
Starch
Glycogen
Cellulose
Chitin
Iodine test for starch
1. Add
iodine
to food/material
2. Violet colour indicates presence of
starch
Benedict's test for simple carbohydrates
1. Add
Benedict's
solution to food
2. Colour change from blue to green, yellow, orange, red indicates
presence
and
amount
of simple carbohydrates
Proteins
Body building molecules that help us
grow
,
transport
molecules, and control chemical reactions
Monomer for proteins
Amino acid
Proteins
Soy albumin
Egg white
Hemoglobin
Enzymes
Biuret test for proteins
1. Add
biuret reagent
to food
2. Colour change from blue to
purple
indicates presence of
proteins
Nucleic acids
Important components in
heredity
, present in
DNA
Lipids
Energy
storing molecules, provide protection and
waterproof
covering
Monomer for lipids
Fatty acids
Types of lipids
Steroids
Cholesterol
Fats
Oils
Waxes
Saturated fats
Solid
at
room temperature
Unsaturated fats
Liquid at
room
temperature
Ethanol emulsion test for lipids
1. Add
ethanol
to food
2. Presence of lipids indicated by
cloudy emulsion
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