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What are retroviruses? How do they reproduce and what is the role of the enzyme reverse transcriptase?
Retroviruses are viruses whose genetic material is RNA. HIV and the virus of SARS (severe acute respiratory syndrome) are instances of retrovirus.
These viruses inoculate their RNA into the host cell and within the cell the viral RNA is reversely transcript into DNA. DNA made from the viral RNA then commands the synthesis of viral proteins for the assemblage of latest viruses and the breaking of the host cell to liberate them outside.
The enzyme reverse transcriptase is the catalyst of the reverse transcription of RNA into DNA. The enzyme is part of the virus and it is also inoculate into the host cell.
Define Most Probable Number (MPN) Method? The MPN method is like agar shake tube method where no agar is used. The dilutions of the microbial suspension are made in liquid medi
Determine the significance of Mesoglea. The jellylike layer found between endodermal and ectodermal cell layers of diploblastic organisms. It acts as a type of cement holding t
Determine the Food Sources of Pyridoxine? Raw foods contain more of this vitamin than cooked foods. The food sources include: 1. Rich sources: Rice polishing s, wheat bran,
discus the protozoan flagellates of less medical importance ,outlining their development stages,normal habitants and morphological characteristics
GENERAL NURSING RESPONSIBILITIES IN DIAGNOSTIC PROCEDURE Let us understand what are the general responsibilities of nursing personnel while assisting in diagnostic procedure
Name the two hormones produced by the pancreas ans say in what circumstances, in what way, they adjust the glucose concentration in the blood.
Q. During mitotic anaphase is there separation of identical chromatids or separation of homologous chromosomes? In the anaphase of mitosis the identical chromatids complete and
BLOO D VESSELS - Some vessles supply blood to wall of large vessels these are vessel of vessels or vasa vasorum . Mainly artery and vein, 2 types of vessels present.
Why is pattern baldness more common in men than in women? Pattern baldness is handled by the allele B. Testosterone interacts with the heterozygous genotype (BB′) to make baldn
WHAT IS A CELL
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