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Library Questions Stories About

Biomolecules

is ester lipid?

Yes, ester may be lipid but note that only the ester of fatty acids are lipids. Esters (CH-O) are the bond formed between alcohol group and carboxylic acid (-COOH) by the removal of a molecule of water. And if such bond is formed between fatty acid that's lipid. Similarly ester bond can also be formed between Penrose sugar and phosphate group in DNA to form phosphodiester bond which is actually not a lipid so be careful that only the ester bond between fatty acids can be considered as lipids....

yo formation of lipid ma lipid kaha form vayo?? RCOOH ta xaina. How is lipid formed??

Well it's your misconception that every ester is lipid. Only the esters of fatty acids are lipids and in the above reaction ester is formed by the removal of a molecule of water. This is simply a general formula . In the same case if the akyl group(-R) is replaced by fatty acid (which is itself a hydrocarbon chain) then that's lipid. Hope you understood.

simple protein ma yeuta matra amino acid hunxa then peptide chain kasari hunxa ne??

Well you have mistaken it. Actually simple acids have only amino acid doesn't mean that they are composed of single amino acid only. It means they are composed by combination of many amino acids linked by peptide bond but consist no any external components like fats, starch and so on.

Hope you are clear now!

Differentiate between micro molecules and macro molecules.

Micromolecules	Macromolecules
They are smaller molecules having lower molecular weight.	They are larger molecules with higher molecular weight.
They are formed by different elements like C,H,O,N etc.	They are formed by polymerization of large number of micromolecules
For eg: monosaccharide, amino acids, fatty acids, nucleotides etc.	For eg: polysaccharides, proteins, lipids, nucleic acids etc.

What do you mean by active site of an enzyme?

The binding site and the catalytic site of an enzyme are collectively called as active site of an enzyme.

Enzymes as a whole are not involved in catalytic activity, only a small part of it gets actively involved in substrate before going catalysis (binding site) and another small part involved in catalytic process (catalytic site)

Why amino acids are amphoteric in nature?

Amino acids are the organic acids having a basic amino (-NH₂) group attached to the chain containing acidic carboxyl

(-COOH) group . Since they have at least one basic amino group and one acidic carboxyl group, they are amphoteric in nature.

Name two of the structural polysaccharides and storage polysaccharides

Structural polysaccharides: cellulose, peptidoglycanStorage polysaccharides: Starch, glycogen

What are the identifying characteristics of structural polysaccharides?

The identifying characteristics of structural polysaccharides are as follows:

i) They have comparatively higher molecular weight than other carbohydrates

ii) They are non reducing sugar.

iii) They are insoluble in water and don't taste sweet.

Define cellular pool

The collection of all the biomolecules present inside the cell is called cellular pool.

Enzymes

Enzymes are complex macromolecules proteinaceous in composition, colloidal and thermolabile in nature which are used to increase the rate of chemical reaction in living organisms without itself b...

Nucleic Acid :RNA

Ribonucleic acid (RNA) is a polymer of ribonucleotides composed of ribose sugar and nitrogen bases Adenine (A) Guanine (G), Cytosine (C) and Uracil (U) which are joined together by a phosphodieste...

Nucleic Acid : DNA

Deoxyribonucleic acid (DNA) is a polynucleotide chain composed of deoxyribonucleotides. They are the principal genetic material of living organisms.Deoxyribonucleotides are formed by the combinatio...

Nucleic Acids

Nucleic acids are the complex long-chained organic compounds larger than most of the proteins and are composed of C, H, O, N and P. They are the macromolecules made up of of nucleotides.So we can...

Lipids

Lipids are the the esters of fatty acids and glycerol made of C, H and O. However, the number of of oxygen is less as compared to carbohydrate.They are insoluble in water but soluble in organic sol...

Types of Protein

Proteins are the most complex chemical compounds formed of C,H, O,N,(sometimes S and P).On the basis of of chemical nature, proteins are divided into three categories:Simple proteinsConjugated prot...

Proteins

Proteins are the most complex chemical compounds formed of C,H,O,N (sometimes S and P)The characteristic element of protein is nitrogen. Proteins are the polymers of amino acids made up of large nu...

Carbohydrates

Carbohydrates are the organic compounds i.e. essential biomolecules composed of carbon ,hydrogen and oxygen. The hydrogen and oxygen are in the ratio of 2:1 so they are also called "Hydrates of C...

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