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!
How cells are studied
We learnt about the evolution of the cell and a historical account of the growth of cell biology. In this section, you will study about the various tools and techniques used to study the cell.
Cells, due to their minute size, cannot be observed by the naked eye. Lenses can magnify minute objects only upto a limited extent. Therefore, many lenses were combined together to form an instrument known as the microscope (Gr mikros-small, skopein-to see). Subsequently, many new tools and techniques were invented by cell biologists about which you will study in detail in this section.
We begin the section with light microscope (LM). Here, you will know about the difference between resolving power and magnification and various cytochemical techniques which are used to study the chemical components and structural organisation of the cell. Phase contrast microscopy; an important technique for viewing the live cells is described. You will also learn about electron microscopy (EM), the best known method for the study of the ultrastructure of the cell and an important technique called 'freeze fracturing' which is used to study the internal structure of membrane in the cell.Use of radioisotopes, antibodies, and fluorescence microscopy for localisation of various cell components are discussed in this Unit. You will also learn about cell culture and cinemicrography, the other important techniques used to study live cells. While going through this unit, it would be useful to recall and apply your knowledge of elementary chemistry, physics and mathematics, such as radioisotopes, refractive index and simple mathematical calculations. The study of this Unit assumes that you are familiar with the optical laws and princi~leso n which a microscope works.
What is Concentration Gradient? The graduated dissimilarity in concentration of a solute per unit - distance by a solution.
Seed Dormancy - Plant Growth Substances Seed dormancy is critically important for the survival of plants. Factors involved in seed dormancy are: A. Environmental Factors
Q. What are the steroids? What are the few examples of steroids with a biological function? Steroids are lipids based in an angular combination of four carbon rings, one ring m
Name the endocytosis? A. During endocytosis of GLUT4 transporters in fat cells, there is removal of GLUT4 transporters from plasma membranes. B. During endocytosis of
Full Description about microfilament
What is an organ that belongs to more than one organ system? One answer is the pancreas. It belongs to both the endocrine and digestive systems. Another one is bone marrow. It
How sugar play a major role in Fermentation? The production of chemicals by fermenting several sugars is a very well-accepted science. Its utilize ranges from producing beverag
For many of the mammalian Hox genes, it has been possible to determine that some of them are more similar to one of the insect HOM-C genes than to the others. Describe an experimen
What are respiratory pigments? What is the respiratory pigment present in some arthropods? Which is the analogous molecule in humans? Respiratory pigments are molecules able t
ROLE OF A NURSE IN LEGAL PSYCHIATRY: 1) Standard Care : The nurse must function at laid down standards and keep up with the standard of care by knowing the policies & pro
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