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TLS Online TPP Program

#Question id: 2617

According role of regulatory proteins, RNA polymerase and one or more promoter elements, mostly three levels of transcription are there, choose correct one

#SCPH01 Biochemistry

  1. RNA polymerase occasionally binds the promoter spontaneously – No transcription

  2. Binding of the repressor to the operator- Basal level

  3. If both the repressor and activator are present and functional, the action of the repressor typically overcomes that of the activator - Activated level

  4. A & B both are correct

More Questions
TLS Online TPP Program

#Question id: 3871

#SCPH05 I Biotechnology

Which of the following is not known to be involved in initiation by eukaryotic RNA polymerase II?
TLS Online TPP Program

#Question id: 12100

#SCPH28 | Zoology

Prairie dogs once covered the expanses of the Great Plains. Their grazing made the grass more nutritious for the huge herds of bison, and a variety of snakes, raptors, and mammals   preyed on the rodents. In fact, the black- footed ferret (now endangered) specialized in prairie dog predation. Today, growing housing and agricultural developments have covered many prairie dog towns. Which of the following statements about prairie dogs is true?
TLS Online TPP Program

#Question id: 14350

#SCPH05 I Biotechnology

Henry's law relates 
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: 4742

#SCPH12 I Genetics

In birds, sex is determined by a ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons. What would be the sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a normal female?