Molecular Level of Biology

(Nimii, Rahim Yar khan)

Molecules:
Different atoms are combined through a covalent and ionic bond to form molecules. Most atoms are not stable that’s why they exist in combine form to stay stable in the universe. The body of an organism is made by different types of molecules. Molecules performed many important functions in our body. Examples: H2O, H2SO4 are molecules. The molecules that present in our body are called Biomolecules. They construct our body structure to makeup body muscles and give them strength.

Types of Biomolecules
There are four types of biomolecules e.g. proteins, carbohydrates, lipids, and nucleic acids. One of the biomolecules, nucleic acids, specifically DNA and RNA, have the specific characteristic of storing an organism’s genetic code—the sequence of nucleotides that determines the amino acid collection of proteins, that are of critical significance to life on Earth. 20 unique amino acids could arise within a protein; the order in which they arise performs a fundamental function in figuring out protein shape and function. Proteins themselves are major structural factors of cells. They additionally serve as transporters, transferring vitamins and other molecules in and out of cells, and as enzymes and catalysts for the sizeable majority of chemical reactions that take vicinity in residing organisms. Proteins additionally form antibodies and hormones, and that they impact gene hobby.

Similarly, carbohydrates, that are made up of molecules containing atoms of carbon, hydrogen, and oxygen, are important electricity assets and structural additives of all life, and they're the various maximum plentiful biomolecules on Earth. They are constructed from four forms of sugar gadgets—monosaccharides, disaccharides, oligosaccharides, and polysaccharides. Lipids, some other key biomolecule of residing organisms, satisfy a ramification of roles, such as serving as a source of stored energy and acting as chemical messengers. They additionally shape membranes, which separate cells from their environments and separate the cellular indoors, giving upward thrust to organelles, which include the nucleus and the mitochondrion, in higher organisms.

Micromolecules:
The molecules that are low molecular weight are called macromolecules.
Example: Amino acids, H2O, etc
Macromolecules:
The higher molecular weight molecules are called macromolecules
Examples: proteins, starch, nucleic acids, etc.
Types of Molecules:
Molecules are of two types organic and inorganic molecules.
Organic molecules: The molecules contain both hydrogen and carbon are organic while Inorganic molecules are those that contain other atoms except carbon and hydrogen.


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