Restriction endonuclease

• cuts the DNA molecule randomly

• cuts the DNA molecule at specific sites

• restricts the synthesis of DNA inside the nucleus

• restricts the synthesis of DNA inside the nucleus

A gene whose expression helps to identify transformed cell is known as

• Selectable marker

• Vector

• Plasmid

• Plasmid

During DNA replication, Okazaki fragments are used to elongate

• The leading strand towards replication fork

• The lagging strand towards replication fork

• The leading strand away from replication fork

• The leading strand away from replication fork

Which of these statements is incorrect?

• Enzymes of TCA cycle are present in mitochondrial matrix

• Glycolysis occurs in cytosol

• Oxidative phosphorylation takes place in outer mitochondrial membrane

• Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms

What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis?

• The larger the fragment size, the farther it moves

• The smaller the fragment size, the farther it moves

• Positively charged fragments move to farther end

• Positively charged fragments move to farther end

Given below is a diagrammatic cross section of a single loop of the human cochlea.

diagram

Which one of the following options correctly represents the names of three parts? 

• B: Perilymph
  C: SPerilymph
  D: Secretory Cells

• C :Endolymph
  D : Sensory hair cells
  A: Serum

• D: Sensory hair cells 
  A: Endolymph
  B: Tectorial membrane

• D: Sensory hair cells 
  A: Endolymph
  B: Tectorial membrane

Lysozyme that is present in perspiration, saliva and tears, destroys

• certain fungi

• certain types of bacteria

• all viruses

• all viruses

The DNA fragments separated on an agarose gel can be visualised after staining with

• Bromophenol blue

• Acetocarmine

• Aniline blue

• Aniline blue

Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?

• GUU, GCU - Alanine

• UAG, UGA - stop

• AUG, ACG - start/ methionine

• AUG, ACG - start/ methionine

Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called

• Bio-infringement

• Biopiracy

• Bioexploitation

• Biodegradation