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TLS Online TPP Program

#Question id: 24495

Which of the following step of splicing involves ATP

#Unit 3. Fundamental Processes
  1. A complex
  2. E complex
  3. B1 complex
  4. B2 complex
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TLS Online TPP Program

#Question id: 12489

#Unit 8. Inheritance Biology

Achondroplasia shows autosomal dominant inheritance with complete penetrance. A man with achondroplasia has an unaffected partner of normal height. Their first two children are not affected. Which of the following is correct?
TLS Online TPP Program

#Question id: 12238

#Unit 10. Ecological Principles

The mussel Mytilus edulis thrives in saline habitats, in both the highly salty seawater of tidal zones and the less salty estuaries. This results in two kinds of populations: one adapted to the higher salt concentrations of the tidal zone, and one adapted to the lower salt concentrations of the estuary. It has been found that the more salt-tolerant populations have high frequencies of an allele that produces an enzyme involved in maintaining osmotic equilibrium. Conversely, estuarine mussels having the same enzyme seem to be disfavoured and have a much higher death rate than mussels without the allele. Adult estuarine populations do have lower frequencies of this allele. Each spring, large numbers of larvae from  the salty habitats pour into the estuaries.
The invasion of the seawater larvae would be expected to facilitate change in the genetic structure of the estuarine population by a process called
TLS Online TPP Program

#Question id: 10554

#Unit 6. System Physiology – Plant

Transpiration is an important means of dissipating the heat input from sunlight, Heat dissipates because the water molecules that escape into the atmosphere
TLS Online TPP Program

#Question id: 7251

#Unit 5. Developmental Biology

Following statements are regarding to the three “toggle switches” activated along the anterior-posterior axis to establish gap gene domains in drosophila.

A. The mutual inhibition of Knirps and Hunchback positions the Knirps protein domain at around 60–80% along the anterior-posterior axis.

B. Hunchback inhibits Krüppel expression at high concentrations but promotes it at intermediate concentrations.

C. Hunchback inhibits Krüppel expression at intermediate concentrations but promotes it at high concentrations.

D. Krüppel and Giant mutually inhibit each other’s synthesis.

E. Kruppel inhibits Giant expression at high concentrations but promotes it at intermediate concentrations.

Which of the following statements are correct?
TLS Online TPP Program

#Question id: 376

#Unit 1. Molecules and their Interaction Relevant to Biology

Phosphoric acid is tribasic, with pKa of 2.14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is