There are many types of RNAs, but three types of it are described here: 1. Ribosomal RNA (rRNA) 2. Messenger RNA (mRNA) 3. Transfer RNA (tRNA). Type # 1. The Ribosomal RNA (rRNA): The non-genetic RNAs are synthesized on the DNA template and are present in the nucleolus and cytoplasm. Therefore, the base sequences of […]
Types of RNA (Ribonucleic Acid) | Biochemistry
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Classification of Pili | Bacteria
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In this article we will discuss about the classification of pili. Mainly pili are of two types: (a) Common pili which act to adhere the cell to surfaces, and (b) Sex pili which join the other bacterial cell for transfer of genome. Ottow (1975) has classified the pili into the following six groups: Group 1: […]
Chargaff-Equivalence Rule for DNA | Biochemistry
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In this article we will discuss about the Chargaff-equivalence rule for DNA. By 1948, a chemist Erwin Chargaff started using paper chromatography to analyse the base composition of DNA from a number of studies. In 1950, Chargaff discovered that in the DNA of different types of organisms the total amount of purines is equal to […]
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