CBSE
Multiple Choice QuestionsGiven 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?
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
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
A gene whose expression helps to identify transformed cell is known as
Selectable marker
Vector
Plasmid
Plasmid
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
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
The DNA fragments separated on an agarose gel can be visualised after staining with
Bromophenol blue
Acetocarmine
Aniline blue
Aniline blue
Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called
Bio-infringement
Biopiracy
Bioexploitation
Biodegradation
Lysozyme that is present in perspiration, saliva and tears, destroys
certain fungi
certain types of bacteria
all viruses
all viruses
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
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
