TLS Online TPP Program

#Question id: 5563


In mammalian eggs, the receptors for sperm are found in the ________.

#I Life Science/ Life Sciences Group – I-V
  1. fertilization membrane

  2. egg plasma membrane

  3. cytosol of the egg

  4. mitochondria of the egg

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TLS Online TPP Program

#Question id: 568

#SCPH05 I Biotechnology

Which of the following statements about allosteric control of enzymatic activity is false?

TLS Online TPP Program

#Question id: 15817

#SCPH12 I Genetics

You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thrmutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium

Based on these experiments, what is the minimum number of genes required for threonine synthesis?

TLS Online TPP Program

#Question id: 10714

#SCPH06 I Botany

What is value of Gini-simpson indices of following community? 


TLS Online TPP Program

#Question id: 404

#SCPH01 Biochemistry

When a mixture of 3-phosphoglycerate and 2-phosphoglycerate is incubated at 25 °C with phosphoglycerate mutase until equilibrium is reached, the final mixture contains six times as much 2-phosphoglycerate as 3-phosphoglycerate.  Which one of the following statements is most nearly correct, when applied to the reaction as written?  (R = 8.315 J/mol·K; T = 298 K)  3-Phosphoglycerate -> 2-phosphoglycerate

TLS Online TPP Program

#Question id: 19496

#SCPH05 I Biotechnology

The radius of an atomic nucleus is of the order of————–