Identify the term ‘ash’ in term of living tissue sample analysis from the statements given below
Organic compounds oxidised to gaseous form ( and water vapour) after burning of the tissue
The material left after burning the tissue which contains inorganic elements (e.g., calcium, magnesium etc.)
Compounds removed in the form of gases
Compounds which may be soluble in intracellular fluid
Related Questions
Choose the element which is negligible in living matter
Si
Mg
Ca
S
Lipid are found in acid insoluble fraction during the analysis of chemical composition of tissues. Given the reason
It has very high molecular weight
It is polymer
It has low molecular weight
On grinding, the biomembranes are broken into pieces and form insoluble vesicles
Most abundant substance in living organisms
micromolecules
macromolecules
cellular pool
water
In animal tissues, the categories of compounds present are called
Molecules
Primary metabolites
Secondary metabolites
Biomolecules
The most abundant molecule in cell, is
Water
Carbohydrate
Lipid
Protein
Grinding of a living tissue in trichloroacetic acid shows the presence of the inorganic compounds like sulphate, phosphate etc, which are categorised in
Acid insoluble fraction
Acid soluble fraction
Both (a) and (b)
Not found in cellular pool
Which of the following statements are correct?
I. Relative abundance of carbon and hydrogen with respect to other elements is higher in any living organisms
II. Living organisms have more nitrogen and oxygen per unit mass than inanimate objects (e.g., earth crust)
III. All the elements present in a sample of earth’s crust are also present in a sample of living tissue
IV. Living organisms have more Ca,Mg,Na in them than inanimate object
I and II
II and III
I and IV
III and IV
Chemical compounds that have molecular weights less than one thousand dalton are usually referred to as
Biomolecules
Micromolecules
Macromolecules
Both (a) and (b)
Primary metabolites play known roles in
Ecology
Chemical process
Human welfare
Physiological process
Select the correct constituents of protein
Carbon, hydrogen, oxygen and nitrogen
Carbon, hydrogen, nitrogen and sulphur
Carbon, hydrogen, nitrogen, oxygen and sulphur
Carbon, hydrogen and oxygen
