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TLS Online TPP Program

#Question id: 12587

The most plausible  hypothesis to  explain why  species richness is  higher in  tropical  than in  temperate regions is that

#Unit 10. Ecological Principles
  1. Tropical communities are younger.
  2. Tropical regions generally have more available water and higher levels of solar radiation. 
  3. Higher temperatures cause more rapid speciation.
  4. Biodiversity increases as evapotranspiration decreases.
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TLS Online TPP Program

#Question id: 5048

#Unit 5. Developmental Biology

when a cell or tissue is capable of differentiating autonomously even when placed into another region of the embryo or a cluster of differently specified cells in a petri dish. This cell or tissue said to be-
TLS Online TPP Program

#Question id: 27954

#Unit 1. Molecules and their Interaction Relevant to Biology

Some of the statement is given regarding the Pyruvate kinase 
a. Pyruvate kinase is activated  by ATP, acetyl-CoA, long-chain fatty acids 
b. Pyruvate kinase is allosterically inhibited by ATP, acetyl-CoA, long-chain fatty acids
c. Accumulation of alanine allosterically inhibits pyruvate kinase M in muscles, slowing the production of pyruvate by glycolysis
d. Accumulation of alanine activate pyruvate kinase M in muscles, increases the production of pyruvate by glycolysis

Which of the following is incorrect
TLS Online TPP Program

#Question id: 28521

#Unit 5. Developmental Biology

 Which of the following stage of the diploid life cycle commences with the fusion of the haploid egg and sperm to form the single-celled ?
TLS Online TPP Program

#Question id: 450

#Unit 1. Molecules and their Interaction Relevant to Biology

The DG'° values for the two reactions shown below are given.

Oxaloacetate + acetyl-CoA + H2O -> citrate + CoASH DG'° = –32.2 kJ/mol

Oxaloacetate + acetate    ->   citrate DG'° = –1.9 kJ/mol

What is the DG'° for the hydrolysis of acetyl-CoA?

Acetyl-CoA + H2O -> acetate + CoASH + H+
TLS Online TPP Program

#Question id: 13053

#Unit 13. Methods in Biology

What would the generally expected effect on the PCR reaction be of adjustments that increase the temperature of the annealing phase and the length of the elongation phase?