Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Radioisotopes
Radioisotopes are those forms of an element which exhibit rzdioactivity and so can be used as markers or tracers. For this purpose, we first introduce the radioisotope in a molecule in the cell and then detect the radioactivity with the help of certain device. For example, if we replace a suitable hydrogen atom of thymidine by 3H, we may trace the course of thymidine in the cell. Since thymidine is a component of DNA but not of RNA, we can be sure that we are following only DNA metabolism. Similarly, to know the course of protein synthesis we may use radioactively labelled amino acids.Radioisotopes are used to:
(a) measure the rates of metabolic turnover of a material within a cell or tissue,
(b) locate the site of synthesis of molecules,
(c) measure the rate of exchange of materials across cellular membranes,
(d) locate a molecule in a cell. Radioisotopes are widely applied to study also the precursor-product relathship.
Many times when a radioactively labelled mokcule (pncursor) is introduced into a system. The molecule is chemically converted into another form (product). For example, when radioactive iron is introduced in blood, radioactivity can be detected in liver femtin and haemoglobin of red blood cells. Similarly, radioactivity of 32P- labelled phosphate can be detected in many phospholipids.
Q. Describe Palynological Evidence? Palynology is the study of pollen and spores. The taxonomic characters of pollen grains include wall structure, polarity, symmetry, shape an
R uminal tympany (Bloat) It is the over-distension of the rumen with gases which may be either frothy or free gas. The disease is characterized by change in silhouette of the
As heart failure sets in, there is activation of RAS (Fig 2.1). Adrenergic stimulation of beta-1 receptors in juxtaglomerular apparatus of the kidneys results in release of renin.
What are the illustrations of the civil law? Illustrations of the civil law: Illustrations of civil actions are defamation of breach, character of contract, trespassing or
Which one of the following does not follow the central dogma of molecular biology? 1. Pea 2. Mucor 3. Chlamydomonas 4. HIV HIV is the central dogma of molecular bi
a) In what ways do farmers try to improve the quality of (i) their soil, (ii) their crop plants? b) What other steps do farmers take to maximise the yield from their
make assignment multiple alleles
Clinical Manifestation Early onset of dyspnea on exertion (DOE) which progresses to continuous dyspnea. Rhonchi, crackles , accessory muscle breathing, Increased rate of br
Phylum Sporozoa 1) Thcy do not liavc any external locomotory dcvice and move by wriggling. 2) Reproduction by producing numerous spores. 3) All are parasites of animals,
Q. What is the path followed by the energy absorbed by plants to be used in photosynthesis? The energy source of photosynthesis is the sun, the central and unique star of our p
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd