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
B.
UAG, UGA - stop
The group of nucleotides that specifies one amino acid is a code word or condo. The nucleotides of mRNA are arranged as a linear sequence of codons, each London consisting of three successive nitrogenous bases. Three codons UAG, UAA and UGA are the chain stop or termination codons. They do not code for any of the amino acids.
In most organisms AUG codon is the start or initiation codon, They do not code or any of the amino acids.
In most organisms AUG codon is the start or initiation codon, ie, the polypeptide chain starts either with methionine or N-formylmethionine.
Leucine - UUA, UUG, CUU, CUC, CUA, CUG
Alanine - GUC, GCC, GCA, GCG
GUU - Valine
UCA - Serine
Restriction endonucleases are enzymes which
make cuts at specific positions within the DNA molecule
recognize a specific nucleotide sequence for binding of DNA ligase
restrict the action of the enzyme DNA polymerase
restrict the action of the enzyme DNA polymerase
Stirred -tank bioreactors have been designed for
the addition of preservatives of the product
purification of the product
ensuring anaerobic conditions in the culture vessel
ensuring anaerobic conditions in the culture vessel
What is true about Bt toxin
The inactive protoxin gets converted into active form in the insect gut
Bt protein exists as active toxin in the bacillus
The activated toxin enters the ovaries of the pets to sterilise it and thus prevent its multiplication
The activated toxin enters the ovaries of the pets to sterilise it and thus prevent its multiplication
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?
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
