TLS Online TPP Program

#Question id: 4553


The NtrC protein (nitrogen regulatory protein C)—stimulates transcription of the glnA gene, this protein is an activator of σ54-RNA polymerase. Which of the following given characteristics about this protein is incorrect?

#Unit 3. Fundamental Processes
  1. NtrC is a dimeric protein, in turn, is regulated by a protein kinase called NtrB

  2. In response to high levels of glutamine, NtrB phosphorylates dimeric NtrC, enhancer-bound phosphorylated NtrC then stimulates the σ54-polymerase and initiate transcription

  3. NtrC has an ATPase activity

  4. Mutants with an NtrC that is defective in ATP hydrolysis are invariably defective in stimulating the σ54-RNA polymerase to melt the DNA strands at the transcription start site

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TLS Online TPP Program

#Question id: 5367

#Unit 8. Inheritance Biology

Following pedigree showing X link recessive disorder. Which of the following confirm a carrier female in a family?

TLS Online TPP Program

#Question id: 5368

#Unit 8. Inheritance Biology

Which of the following is correct about genetic disorder in family?

A) Gene for this trait present in both sex

B) Trait is governed by mitochondrial gene

C) Sex limited trait acts like a recessive trait on an autosome

D) Sex influenced trait acts like a dominant trait on an autosome

TLS Online TPP Program

#Question id: 5369

#Unit 8. Inheritance Biology

Above family shows inheritance of colour-blindness is recessive genetic disorder. Which of the following is correct statement? (All persons are outside of family either homozygous (female) or hemizygous (Male) are consider)

TLS Online TPP Program

#Question id: 5370

#Unit 8. Inheritance Biology

The pedigree below represents the inheritance of an X link recessive trait. The probability of effected child in fourth generation of family?

TLS Online TPP Program

#Question id: 5371

#Unit 8. Inheritance Biology

The trait represented in the following pedigree (shaded symbols) is known to be inherited as a single dominant gene. Calculate the probability of the trait appearing in the offspring if the first cousins should marry and have children.

TLS Online TPP Program

#Question id: 5372

#Unit 8. Inheritance Biology

Consider the following diagrams, each being a different situation in which an entire gene is represented in a higher organism. In some cases, a point mutation exists (indicated by p). In other cases, a deletion has occurred (indicated by xxxxx), both of which render the gene nonfunctional

Which of the following homozygous cross would produce wild type phenotype?