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.
Which of the following is true for ventilation? A. Interneurons responsible for generating the rhythm of ventilation are located only in the hypothalamus. B. All the central
Explain Magnetic Stirrer - Food Microbiology It can be used for mixing ingredients at the time of media or reagents preparation. Mixing happens with spinning of a teflon coat
Where can RNA be found within cells? In the eukaryote cell nucleus RNA can be found dispersed in the nuclear fluid, with DNA, and as the main constituent of the nucleolus. In c
P ARTURITIO N - Gestation period is of 280 days (in rabbit 28 days). Parturition is the expelling of fully mature young ones from the mother's uterus. Oxytocin stimulates
Q. Explain Clinical Manifestations of cardiomyopathy? 1) Asymptomatic, when the diagnosis is made by 2D Echocardiography. 2) Enlargement of LV. Apex is shifted down and out.
Q. What are the characteristics of protozoans that make them resemble animals? Protozoans are unicellular beings with some related characteristics to animal cells. In compar
how to make question on classification of Protozoan parasite
You have accidentally mixed up 3 beakers of solutions. One is water. One is pure methanol. One is pure phosphoric acid. What would be a very wrong way to tell the difference betwee
Explain Theory or Principle of Determination of Coliforms? Coliforms are gram negative, non-spore forming, facultative anaerobic bacteria which produce acid and gas on lactose
Sphaerosome Also known as Plant lysosome , because they contain hydrolytic enzymes. Hanstei n first observed them and called microsomes . Discovered by Dangeared
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