Chromosomes are genetic material present in the cell nucleus. Chromatids are the parts of the chromosome present as two arms. Sl. No Characteristics Chromosomes Chromatids 1 Basic They are nuclear components that play a vital role in heredity, mutation, variation, and evolutionary development of the species These are part of chromosomes. During mitosis, the chromosomes […]
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Cilia and Flagella are cell organelles which protrude out of cytoplasm and are meant for external functions of cells. Cilia are small hair like structures coming out of cytoplasm of many animals and cells. Flagella are long thread like or whip like structures protruding out of cytoplasm through cell wall. Cilia and Flagella are cell […]
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A recent development in cell biology has allowed the fusion of different cells to form a “hybrid’ cell, which expresses the properties of both parental cell lines. The fusing agent can be a defective virus (Sendai virus that characteristically causes cell fusion) or various chemicals (such as polythene glycol. And this gives rise to cells […]
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Cnidaria is a class of animals which are found in marine and aquatic environments. They come under coelenterate phylum. Cnidaria Characteristics The cnidarians are defined as the “diploblastic metazoa with tissue grade organization. They are referred to as the simplest metazoan. The body wall is made up of two layers viz, ectoderm, and endoderm. Hence, […]
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Gymnosperms are considered as primitive plants while the angiosperms are advanced. There are few characteristic differences between them. Gymnosperms vs Angiosperms Sl.No Charecter Gymnosperms Angiosperms 1 Basic feature These are non-flowering plants which produce seeds These are flowering plants which produce seeds. 2 Seed feature The seeds are naked and found in scales, leaves, or […]
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The roots are a very important organ in plants. They develop from radicle and help in absorption of water and minerals from the soil that are required for the plant life. The roots fix the plant to the ground and provide support to the part of the plant above-ground. In few plants like rhizomes, roots […]
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The translation is a process by which ribosomes present in the cytoplasm (on endoplasmic reticulum) synthesize the proteins from an mRNA. The RNA Translation occurs by 3 steps like 1.Initiation 2. Elongation 3. Termination. A protein is a polypeptide that has a sequence of the amino acids coded by the mRNA. There are different types […]
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Transcription means a written version of something. So, a DNA transcription means formation of a copy of DNA strand. “The process by which the DNA sequence is read and the complementary RNA molecule is formed is called transcription.” Thus the DNA codes for RNA strand which will then code for the protein. Before transcription can […]
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Nitrogen is present in group 15 of the periodic table. Nitrogen has an atomic number of seven and a mass number of 14.01u. Thus in a neutral atom of nitrogen, there exist seven electrons. Similar to carbon electron configuration, two electrons are located in the inner orbit. The remaining five electrons are distributed in the […]
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Cell membrane is a delicate organ of the cell which regulates movement of substances into and outside the cell. The cell membrane transport occurs in two major ways like 1. Passive transport Passive diffusion Facilitated diffusion Osmosis. 2. Active transport. Sodium potassium pump Bulk transport (phagocytosis and pinocytosis) Cell Membrane Transport The structure of cell […]
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