Food Flashcards
Food is needed for
Energy
Growth of new cells
Repair cells
Making chemicals needed for metabolism
Elements in food
Hydrogen Carbon Oxygen Nitrogen Phosphorus Sulfur
Elements in salts
Sodium Magnesium Chlorine Potassium Calcium
Trace elements
Cooper
Iron
Zinc
Biomolecules
Chemicals found inside living things
Examples of biolmolecules
Starch
Glucose
Keratin
Monosaccharides are
Smallest unit if carbohydrates
Sweet
Soluble
Eg of monosaccharides
Glucose
Disaccharides
Two monosaccharides joined together
Sweet and soluble
Eg if disaccharides
Sucrose
Maltose
Lactose
Polysaccharides
Many monosaccharides linked together
Insoluble
Not sweet
Eg of polysaccharides
Starch and cellulose
Starch
Stored in plants eg patatoes
Cellulose
Used in cell walls and fiber in diet
Glycogen
Stored by animals in liver and muscles
Smallest unit of lipid
Triglyceride
Triglycerides
1 glycerol and 3 fatty acids
Phospholipids
Substances were one of the fatty acids is replaced by a phosphate group
Eh of phospholipid
Cream and butter
Protein is made up of
Amino acid units
How many amino acids in a peptide
Less than 20
How many amino acids in a polypeptide
More than 20
How many amino acids in a protein
At least 200
What shape do proteins fold into to function properly
3D
Two types of proteins
Fiberous
Globular
Fibrous proteins
Little folding eg keratin
Globular proteins
Lots of folding eg enzymes and hormones
Metabolic role of vitamin c
Helps wounds heal
Defiency of vitamin c
Scurvy
Metabolic role of vitamin d
Maintains healthy teeth and bones
Deficiency in vitamin d
Rickets in children
Keratin
Hair
Collogen
Skin
Myosin
Muscle
Cellulose forms
Cell walls
Stored lipids..
Heat insulation
Metabolic role of carbohydrates
Release energy
Protein enzymes
Control reactions
Protein Antibodies
Fight infection
Protein hormones
Regulate body reactions
Metabolic role of lipids
Release energy
Functions it minerals
Form biomolecules
Make body parts soft
Two minerals in plants
Magnsium
Calcium
Magnesium in plants
Form chlorophyll
Calcium in plants
Form cell walls
Minerals in animals
Iron
Calcium
Iron in animals
Form haemoglobin
Calcium in animals
Form strong bones
How much cell mass does water take up
70-95%
Water is a component of..
Cyctoplasm
Water is a great
Solvent
Water transports
Substances
Water participates in
Chemical reactions
Metabolism
All chemical reactions in an organism
Anabolic
Convert smaller molecules into complex omes
Ex of anabolic
Photosynthesis
Catabolic
Convert complex molecules into smaller ones
Release energy
Ex of catabolic
Respiration/ digestion
Buiret solution is
Sodium hydroxide and copper sulfate