Basic Principles of Biotechnology MCQs

For a nucleic acid probe to hybridize, which of the following must be true?

A homogeneous protein of native molecular weight 100,000 gave a single band of molecular weight 50,000 on SDS-PAGE in presence of β-mercaptoethanol. N-terminal analysis gave two amino acids alanine and leucine in equal proportions. Hence the

In the RNAi regulatory pathway, the DICER enzyme cleaves

Which one of the following is the unit of heat transfer coefficient?

Amplified fragment length polymorphism (AFLP) P. A PCR-based tool Q. Uses restriction enzymes to cut genomic DNA R. Involves ligation of adaptors to the sticky ends of the restriction fragments S. Involves amplification using primers complementary to the adaptor

Which of the following statements are true in case of fluid-mosaic model for cell membrances P. Between 5 - 8 nm thick and appear trilaminar when viewed in cross-section under electron microscope Q. Less than 1 nm thick and consist of a layer of protein sandwitched between two layers of phospholipids R. In the lipid bilayer, proteins are embedded at irregular intervals and held by hydrophilic interactions between lipids and hydrophilic domains of the proteins S. The protein domains exposed on one side of the lipid bilayer are different from those exposed on the other side

Which one of the following is the most suitable type of impeller for mixing high viscosity (viscosity > 105 cP) fluids?

Which of the following statements about myosin is not true?

Which of the following statements about histones is incorrect?