Revision

Okae im gonna revise on my blog.. i'm NOT doing this with the help of notes or textbook..

Vitamin B
Source : Liver,Bran,Yeast,Meat,Dairy Products.
Functions:Coenzymes involved in cellular respiratin and functions
Deficiency diseases:Beriberi,Pellagra,Pernicia Anaemia

Vitamin C
Source:Citrus fruits such as oranges and lemons,Green leafy vegetables,Fruit juice
Functions:Important for wound healing,maintaining healthy epithelial tissues,involved in formation of intercellullar substances
Deficiency Diseases:Scurvy(loosened bleeding gums, poor wound healing,Low immunity,Painful swollen joints,internal bleeding of muscles skin)

Vitamin A
Sources:Green leafy vegetables,Dark yellow vegetables such as carrots, Eggs and liver
Functions:Forms light sensitive pigment around the retina of the eye, And maintains healthy epithelial tissues
Deficiency Diseases:Visual impairment , blindness

Vitamin D ( ABIT of reference to the notebook hehs sorry)
Sources: (Ultraviolet rays convert egestrol in the skin to Vitamin D)
Margarine,Milk,Fish Liver oils,egg yolk
Functions:Promotes the absorption of Calcium and phosphorous
Enables body to form teeth and bones with them
Deficiency Diseases :osteomalacia, Rickets(poor teeth and bone formation), Deformities(bowed legs and knock knees, tooth decay.





Monosaccharides are
Fructose
Glucose
Galactose

Disaccharides are
Sucrose = Glucose + Fructose
Maltose = Glucose + Glucose
Lactose = Glucose + Galactose

Polysaccharides are
Cellulose
Starch ----> Maltose -----> Glucose
Glycogen



Enzymes are biological catalysts that speed up a reaction but do not take part in it and remain chemically unchanged at the end of the reaction.

The denature if the temperature is too high
Also denature if the pH value is too high or low

Different enzymes have different optimum temperatures and pH values

Enzymes are VERY SPECIFIC.. *(Lock-and-key hypothesis)

The process is
Substrate fuses with the enzyme at the active site
Forms an Enzyme-substrate complex
Released from enzyme is the product of the reaction

e.g. Starch is broken down into maltose by enzymes.

PROTEINS! Enzymes are made from proteins.
Deficiency in proteins can cause kwashiokor (cant rmber what is the symptoms)

Fats are from fats and oils.
Fats and oils are the practically the same thing. Its just that oils are liquid at room temp. while fats are solid.

Ok from here onwards i open textbook bah.. sorries

Water is best solvent for organic and inorganic substances.
Medium in which chemical reactions accur
Cushioning of delicate organs such as the brain.

OK .. im more or DEFINITELY LESS prepared for bio test tmrw // .. i regret for only rmbring about the test at 9 .. not enough time to revise ..


Tired and exhausted
~ErPhiE