Biotechnology : Principles and Processes

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

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

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

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

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

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

• Selectable marker

• Vector

• Plasmid

• Plasmid

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

• Bromophenol blue

• Acetocarmine

• Aniline blue

• Aniline blue

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

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

• Bio-infringement

• Biopiracy

• Bioexploitation

• Biodegradation