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.
Unstable Angina : It is indicative of important reversible myocardial ischaernia that needs urgent evaluation and treatment. Medical management usually relieves symptoms and if t
Q. Explain working of Cerebral Cortex? Cerebral Cortex/Cerebrum: The cerebrum or the cortex is the large part of the brain and is associated with the cognitive functions of the
Q What are the differences and similarities between the transcription process and the replication processes? A DNA polynucleotide chain serves up as a template in the replication (
CONCEPT OF NURSING UNIT: Concept in the design and facilities of nursing unit has been changed time to time based on the different categories of patients and peculiarities of
Q What are muscle tissues? How is the function of this tissue related to the typical characteristics of its cells? Muscle tissues are that tissues which are made of cells able
Energy Budget - Ecosystem All living things must take in and use energy to maintain their bodies, to grow, to obtain more energy and to reproduce. Each individual has an 'ener
Centrioles Centrioles is also called cell centre . Centrosome discovered by Benden . T. Boveri called it centrosome. Centrosome is present in all animal eukaryotic
Q. Compared to mammals do birds absorb more or less water in their digestive system? Why is this phenomenon an adaptation to flight? Bird feces are more liquid than mammal a fe
Discuss about electric field The electric field is a vector quantity whose magnitude is the force per unit charge and points in the direction of the force on the positive test
where does kreb cycle takes place
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