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Most RNA molecules are single-stranded but an RNA molecule should hold regions that can form complementary base pairing where the RNA strand loops back on itself in the above figure. If so, the RNA will have few double-stranded regions. The Ribosomal RNAs (rRNAs) and transmit RNAs (tRNAs) exhibit substantial secondary structure, as do some messenger RNAs (mRNAs).
figure: An example of self-complementarity in RNA, forming an internal double-stranded region; hydrogen bonding between bases is shown by the symbol •.
Numerous receptors have intrinsic or tightly related enzyme activity. On the required of ligand to their extracellular face like receptors undergo a conformational change and acti
Q. Explain about Pre - Diabetes? Pre - Diabetes is a condition where blood sugar level is above normal but below to be diagnosed as diabetes mellitus. It has been found that
There are three levels of diversity viz. genetic, species and ecosystem diversity. In effect, these levels cannot be separated. Each is important, interacting with a nd influencin
What are trophic levels? How many trophic levels can a food chain have? The Trophic levels correspond to positions on a food chain. thus producers always belong to the first tr
Q. What is signifying when it is said that beings of the phylum Annelida are vascular beings? From which other phyla of the animal kingdom does this feature differentiate them?
Insulin Devices - Insulin Pen Insulin pen is an insulin injection system. A pen consists of disposable needle, a vial of insulin and a pen. There are two pen systems replac
Hormone s . The thyroid gland secretes following hormones. Thyroxine (tetraiodothyronine or T 4 )' and tri-iodothyronine or T 3 are secreted by the thyroid follicular cells.
Define Methods of Determination of Proteins and Amino Acid Content in Foods? The methods for protein quality evaluation are grouped under the following headings: I) Analytic
Ground Water Ground water represents a major subterranean reservoir of fresh water. In general. it is not tapped by plants as it is too deep and does not suffer from loss due t
Q. What is continuous full thickness incision? 2. Continuous full - thickness incisions are indicated for a variety of situations outlined below. This type of incision may be u
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