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Determine the representation of the Nucleus
In all eukaryotic cells, the nucleus represents the most prominent and conspicuous organelle of the cell, and is generally seen as a large dense body by special staining procedures, since in a living cell it generally appears structure less. The nucleus is surrounded by a double membrane with pores, which allow selective passage of materials into and out of the nucleus. The nucleus being the "control centre" of the cell, it contains chromatin, composed of DNA, which is associated with a set of five basic proteins called the histones. Histones are small proteins with molecular weights ranging from 11,000 to 21,000 and these contain a very high content of the basic amino acids, namely lysine and arginine (about 25%). Eukaryotic cells contain considerably more DNA than prokaryotes. Thus, while the E.coli cell has an aggregate DNA content of 4 x lo6 base pairs, that of yeast has 1.35 x 107 base pairs, and the human cell has 2.9 x 109 base pairs. Much of the DNA in a eukaryotic cell does not code for proteins, and is regarded as "junk" DNA, the function of which is not clearly understood as yet.
What are all teh parts of a simple ciliated columnar epithilial cell?
Q. What is ecological succession? The Ecological succession is the changing sequence of communities that live in an ecosystem during a given time period.
The sequence for the Beta Actin gene (ACTB) is given below. Which pair of primers (designed to amplify the entire sequence below) could be used to successfully produce the beta act
what is appendages in reptilia
Specific Gravity The density of a substance is defined as mass per unit volume. The density of a substance is a characteristic property and has a definite value at a given te
Subphylum Opalinata Body covered with longitudinal rows of cilium like ,organelles but true ciliature absent. Parasitic; cytosome lacking; two to many nuclei of one type.
Cholesterol, from stereos (solid) and the Greek chole- (bile) followed by the chemical suffix -ol for an alcohol is an organic chemical substance classified as a waxy steroid of fa
Explain the systemic antibiotic cover The need for systemic antibiotic cover should be considered. The original protocols recommended an antibiotic such as amoxicillin 250 mg
In the lack of tryptophan shown in the figure, a trp repressor protein encoded by a split operon, trpR that is synthesized and forms a dimer. Furthermore, this is inactive and so
Q. Meaning of Gestational Diabetes Mellitus? In this type of diabetes, increased blood sugar level is first diagnosed or recognized during pregnancy. Women are not known as dia
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