Practice Questions

TLS Online TPP Program

#Question id: 4167

Which statement is false concerning ribosomes and their components?

#SCPH01 Biochemistry

All ribosomes have two subunits of unequal size.
The genes for eukaryotic rRNA occur as tandem arrays of hundreds of copies.
The 30S and 50S ribosomal subunits of E. coli combine to generate an 80S subunit.
Sequences exist in prokaryotic and eukaryotic rRNA that are so similar, they likely derive from a common ancestor.

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TLS Online TPP Program

#Question id: 18663

#SCPH01 Biochemistry

When a protein exists in mono-, di- and tri-phosphorylated forms. The difference of a couple of phosphate groups has no significant effect on the overall relative molecular mass of the protein, hence a single band on SDS gels, but the small charge difference introduced on each molecule can be detected by

TLS Online TPP Program

#Question id: 18663

#SCPH06 I Botany

When a protein exists in mono-, di- and tri-phosphorylated forms. The difference of a couple of phosphate groups has no significant effect on the overall relative molecular mass of the protein, hence a single band on SDS gels, but the small charge difference introduced on each molecule can be detected by

TLS Online TPP Program

#Question id: 18664

#SCPH01 Biochemistry

2D electrophoresis is the combination of

TLS Online TPP Program

#Question id: 18664

#SCPH06 I Botany

2D electrophoresis is the combination of

TLS Online TPP Program

#Question id: 18665

#SCPH01 Biochemistry

In a road accident a forensic scientist collected traces of blood or other biological fluids and he wants to compared samples according to the composition of certain isoenzymes, for this which technique will efficiently work

TLS Online TPP Program

#Question id: 18665

#SCPH06 I Botany

In a road accident a forensic scientist collected traces of blood or other biological fluids and he wants to compared samples according to the composition of certain isoenzymes, for this which technique will efficiently work