Biology

Nucleotide: A nucleotide is formed when one molecule of nucleoside unites with one molecule of phosphate. Adenosine monophosphatc is united with a phosphate to form…

Nucleoside: A nucleoside is formed when a pentose sugar (Ribose or De-oxy-ribose) is added with a nitrogen base (Adenine, Guanine, Thymine, Cytosine, Uracil) Nucleoside may…

Nucleic acid: Nucleic acid is a very important biochemical substance for every organism. Occurance: Chromosome, plastid, nucleolus, mitochondria, ribosome and cytoplasm. Types: Nucleic acid is…

The cell wall is present in all prokaryotes cells. The genetic material is naked, i.e. not enveloped by a nuclear membrane. Ribosomes Bodies: In prokaryotes cells,…

Most prokaryotic cells, particularly the bacterial cells, have a chemically complex cell envelope. Prokaryotic cell envelope possesses a chemically complex cell envelope. The cell envelope…

The prokaryotic cells are represented by bacteria, blue-green algae, mycoplasma and PPLO (Pleuro Pneumonia Like Organisms). They are generally smaller and multiply more rapidly than…

We observed cells in an onion peel and/or human cheek cells under the microscope. The onion cell which is a typical plant cell has a…

Steroid: Steroid is a plant lipid which is formed by the combination of numerous isoprene units at a particular form. Structure: Most steroids are composed…

Glycogen: Glycogen is a nutritive polysaccharide. It is mainly a reserve carbohydrate of animal bodies. Thus, it is also called an animal carbohydrate. Position: Glycogen…

Frog female reproductive system: The female reproductive organs include a pair of ovaries (Figure). The ovaries are situated near kidneys and there is no functional…