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प्रश्न
Histones are rich in ______.
विकल्प
alanine and glycine
lysine and arginine
histidine and serine
cysteine and tyrosine
उत्तर
Histones are rich in lysine and arginine.
Explanation:
Histones are basic proteins that are positively charged and high in the amino acids arginine and lysine. Histones bond closely to DNA, which is an acid H4 since they are basic.
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संबंधित प्रश्न
Name the transcriptionally active region of chromatin in a nucleus.
Explain the role of histones in forming a nucleosome.
Differentiate between Heterochromatin & Euchromatin.
Read the following and answer from given below:
In prokaryotes, DNA is circular and present in the cytoplasm but in eukaryotes, DNA is linear and mainly confined to the nucleus. DNA or deoxyribonucleic acid is a long polymer of nucleotides. In 1953, the first correct double-helical structure of DNA was worked out by Watson and Crick. Based on the X-ray diffraction data produced by Maurice Wilkins and Rosalind Franklin. It is composed of three components, i.e., A phosphate group, a deoxyribose sugar, and a nitrogenous base. Different forms of DNA are B-DNA, Z-DNA, A-DNA, C-DNA, and D-DNA.
The double chain of B-DNA is coiled in a helical fashion. The spiral twisting of the B-DNA duplex produces ______
Read the following and answer from given below:
The translation is the process of polymerization of amino acids to form a polypeptide. The order and sequence of amino acids are defined by the sequence bases in the mRNA. The amino acids are joined by a bond called a peptide bond. The ribosome is the site of protein synthesis.
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Flagella are present both in prokaryotic and eukaryotic cells, however, they differ in:
Which one of the following is not considered as part of the endomembrane system?
______ are the amino acids of histones.
Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?
Name the enzymes involved in replacement of gaps during RNA processing in prokaryotes and eukaryotes.
