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Explain the The Lysogenic Cycle in diversity of life?
The Lysogenic Life History of Bacteriophage Viruses. Even though viruses are structurally simple, consisting of merely a nucleic acid encased in a protein shell and a few enzymes, they interact in a complex way with living organisms, leading to a very involved relationship with living things. In fact, they are able to prey upon living cells by infiltrating or disrupting the living cell's DNA. The viral DNA (or RNA, if it's a retrovirus) virtually takes control of the host cell by altering the normal functioning of the cell's DNA. The virus will then insert its own DNA into the cell's genetic instructions, and cause the cell to manufacture viral components. As such, viruses are only able to reproduce by "commandeering" a host cell.
This begs the question: if viruses are able to reproduce by using living cells, are they themselves not living to some extent? It would therefore seem that viruses are definitely closely related to life, if not actually living. However, many biologists consider viruses to be nonliving because they cannot independently reproduce nor do they possess the other characteristics of life. At one time biologists considered viruses to be forms that are halfway between living and nonliving. Most now believe viruses to be, evolutionarily speaking, leftover fragments of genomes (the genetic complement) of living organisms.
Protoplasm Also known as bioplast . It is gelly like & semi liquid in appearance. It is translucent in nature. It is colourless, oderless, viscous, elastic & granu
plese help for an assignment of topic parasitic flat worms for a first year zoology student.
Define seliwanoff's Test or Resorcinol Hydrochloric Acid Reaction? seliwanoff's test is specific test for ketonic groups and therefore is positive for ketose sugars like fruc
What is telophase? Telophase is the cell divides apart and screws itself.
Explain Sterilization The physical process of killing microorganisms, including pathogenic and the bacteria, vegetative forms and other spores on or in an inanimate object o
What is Surviving Implants It is a term described by Albrektsson that applies to implants that are still in function but have not been tested against success criteria. Such as
Estuaries - Aquatic Ecosystems All the rivers and lakes ultimately drain into the sea. However, many rivers develop a highly specialised zone before joining the proper sea. Th
To study the gas produced when yeast acts on sugar Place some clear lime water in a test tube and have a pupil exhale by a soda straw placed in the lime-water. Soon the lime-wa
Myeloid immunodeficiency causes phagocytic function, which is impaired. Those who are affected with this will undergo with enhance in susceptibility to bacterial infection.
Describe the important factors of Hand washing Hand washing is an important practice to follow before doing any procedure for the patient. The infection can be transferred
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