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Amar Kumar 8 years, 3 months ago
Cells which starts in the embryo as unprogrammed cells, developed well to create muscle, bone, skin, heart, brain and various types of cells are known as pluripotent stem cells.
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| Active Transport | Passive Transport |
| Requires cellular energy. | Does not require cellular energy. |
| It circulates from a region of lower concentration to a region of higher concentration | It circulates from a region of higher concentration to a region of lower concentration |
| Required for the transportation of all the molecules such as proteins, large cells, complex sugars, ions, etc. | Required for the transportation of all soluble molecules, including oxygen, water, carbon dioxide, lipids, *** hormones, etc. |
| It transports various molecules in the cell. | It is involved in the maintenance of the equilibrium level inside the cell. |
| Active transport is a dynamic process. | Passive Transport is a physical process. |
| It is highly selective. | It is partly non-selective |
| Active transport is a rapid process. | Passive transport is a comparatively slow process. |
| Transpires in one direction. | Transpires bidirectionally. |
| Active transportation is influenced by temperature. | Passive transportation is not influenced by temperature. |
| In active transport, carrier proteins are required | In passive transport, carrier proteins are not required |
| This process reduces or halts as the oxygen content level is reduced. | This process is not affected by the level of oxygen content. |
| Metabolic inhibitors can influence and stop active transport. | Passive transportation is not influenced by metabolic inhibitors. |
| Different types of Active Transport are – Exocytosis, endocytosis, sodium-potassium pump | Different types of Passive Transport are – Osmosis, diffusion, and facilitated diffusion |
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Amar Kumar 8 years, 3 months ago
Polymerization: The act or process of changing to a polymeric form.
Biological polymers are large molecules composed of many similar smaller molecules linked together in a chain-like fashion. The individual smaller molecules are called monomers. When small organic molecules are joined together, they can form giant molecules or polymers.
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Amar Kumar 8 years, 3 months ago
Polymers are large molecules composed of many similar smaller molecules linked together in a chain-like fashion. The individual smaller molecules are called monomers. When small organic molecules are joined together, they can form giant molecules or polymers.
Polymers are made from monomers linked by chemical bonds. They are produced by polymerization, and occur either naturally or synthetically.
Examples of natural polymers are cellulose, shellac and amber. Biopolymers such as proteins and nucleic acids play crucial roles in biological processes.
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Amar Kumar 8 years, 3 months ago
Radical is the part of plant especially of leaves, located at the base of a plant or stem, especially arising directly from the root, rootstock, or a root-like stem.
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Amar Kumar 8 years, 3 months ago
Taxonomy : It is the science of naming, describing and classifying organisms and includes all plants, animals and microorganisms of the world. Taxonomy is the practise of identifying different organisms, classifying them into categories and naming them. There are eight distinct taxonomic categories: Domain, Kingdom, Phylum, Class, Order, Family, Genus and Species.
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Amar Kumar 8 years, 3 months ago
A mortar and pestle is a kitchen device used since ancient times to prepare ingredients or substances by crushing and grinding them into a fine paste or powder. The mortar is a bowl, typically made of hard wood, ceramic or stone,the mortar and pestle allowed the tribal shaman to grind roots and herbs in what was the very beginning of science and medicine.
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