TLS Online TPP Program

#Question id: 7310


Which statement best describes the mechanism for circadian rhythm?

#SCPH28 | Zoology
  1. There is an alternation between enhanced and inhibited expression of clock genes.
  2. Clock genes inhibit gene expression of positive elements.
  3. Clock genes inhibit expression of negative elements.
  4. The time-keeping mechanism depends only on the breakdown of negative elements.
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TLS Online TPP Program

#Question id: 4142

#SCPH01 Biochemistry

The large structure consisting of a mRNA molecule being translated by multiple copies of the macromolecular complexes that carry out protein synthesis is called a:

TLS Online TPP Program

#Question id: 4142

#SCPH05 I Biotechnology

The large structure consisting of a mRNA molecule being translated by multiple copies of the macromolecular complexes that carry out protein synthesis is called a:

TLS Online TPP Program

#Question id: 4142

#SCPH06 I Botany

The large structure consisting of a mRNA molecule being translated by multiple copies of the macromolecular complexes that carry out protein synthesis is called a:

TLS Online TPP Program

#Question id: 4142

#SCPH28 | Zoology

The large structure consisting of a mRNA molecule being translated by multiple copies of the macromolecular complexes that carry out protein synthesis is called a:

TLS Online TPP Program

#Question id: 4143

#SCPH01 Biochemistry

It is possible to convert the Cys that is a part of Cys-tRNACys to Ala by a catalytic reduction.  If the resulting Ala-tRNACys were added to a mixture of (1) ribosomes, (2) all the other tRNAs and amino acids, (3) all of the cofactors and enzymes needed to make protein in vitro, and (4) mRNA for hemoglobin, where in the newly synthesized hemoglobin would the Ala from Ala-tRNACys be incorporated?

TLS Online TPP Program

#Question id: 4143

#SCPH05 I Biotechnology

It is possible to convert the Cys that is a part of Cys-tRNACys to Ala by a catalytic reduction.  If the resulting Ala-tRNACys were added to a mixture of (1) ribosomes, (2) all the other tRNAs and amino acids, (3) all of the cofactors and enzymes needed to make protein in vitro, and (4) mRNA for hemoglobin, where in the newly synthesized hemoglobin would the Ala from Ala-tRNACys be incorporated?