Nutritional requirements of bacteria

1.  NAME : WAQAR AHMED
 COLLEGE ROLL NO : 862
 UNIVERSITY ROLL NO : 023830
 SUBJECT : GENERAL MICROBIOLOGY
 DISCIPLINE : B.S ZOOLOGY (7th)

2. Nutritional Requirements Of
Bacteria

3. NEUTRIENT
Neutrients are substances that are acquired from
environment and are used for growth and
metabolism.
 Catabolism and Anabolism
MACRONUTRIENTS: required in large amount e.g
carbohydrates,proteins,lipids etc( C,H,N,O,P,S,K,Ca.)
MICRONUTRIENTS : Microbes require small amount
of other mineral and vitamins .( Fe,Cu,Mo,Zn)

4. MACRONUTRIENTS:
 Maintain cell structure and metabolism.
CARBON:
 The source of carbon is CO2 and organic
compounds.
 Main constituent of cellular material.
 Primary component of macromolecules
(carbohydrates,lipids,proteins )

5. Nitrogen
The source of nitrogen is organic compounds and
N2.
Constituent of nucleic acids nucleotide and
coenzymes.
 Also part of amino acids
Some bacteria use atmospheric nitrogen,some get
from inorganic nitrogen compounds and still others
drive nitrogen from organic
compounds.(Azotobacter,nitrosomonas,nitrobacter).

6. O,S,P
xygen is provided in many forms such as free
oxygen,water,or from other nutrients.
Oxygen is constituent of cell matetial and essential for
metabolism
The source of sulfur is H2S, SO2,sulfur in organic
compounds.Sulfur is used in the synthesis of many amino
acids( Cystein,Methionin, as part of coenzyme)
Phosphate is usually obtained from inorganic phosphate
and essential constituent of nucleotides,Nucleic
acids,teichoic acid

7. Metal Ions And Vitamins:
Bacteria also requires meyal ions for their normal
growth
For example Zn,Fe,Mo,Cu,Mn,B,Ni
These metal ions are needed at very low
concentration.
Also called trace elements.
These metal ions act as a cofactor of various enzymes
Vitamins act as a building block of coenzymes.

9. THANK
YOU!