Q. Which of the following component of TEM focuses the beam of electrons on the sample?

View solution

Q. Image formation in electron microscope is based on ___________________________

View solution

Q. The biological materials have little intrinsic capability to ____________________

View solution

Q. Glutaraldehyde is a ________________

View solution

Q. Osmium is a ___________________

View solution

Q. In TEM, the tissue is stained by floating on drops of ______________________

View solution

Q. Shadow casting is a technique of visualizing ___________________

View solution

Q. The scanning electron microscope is used to examine _____________

View solution

Q. In the preparation of samples for SEM, the specimens are air-dried by a process of critical-point drying.

View solution

Q. At the critical drying point, there is no surface tension between ________________

View solution

Q. In SEM, the image is formed by the electrons that _________________

View solution

Q. The AFM uses a _______________ to scan the surface of a molecule.

View solution

Q. The identity and chemical properties of an atom are determined by ____________

View solution

Q. Isotopes have the same number of protons.

View solution

Q. Which of the following is radioactive?

View solution

Q. The half life of a radioisotope is _____________

View solution

Q. Which of the following emitted particles consists of two protons?

View solution

Q. A beta particle is equivalent to an electron.

View solution

Q. Liquid scintillation spectrometry is a method of detecting ________________________

View solution

Q. Trypsin is used for dissociating the tissue into single cells.

View solution