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TLS Online TPP Program

#Question id: 5656

What is the cortical reaction, and why is it important?

#Unit 5. Developmental Biology

  1. The cortical reaction is the entry of Ca2+ ions into the egg, which initiates development.

  2. The cortical reaction is the exocytosis of the cortical granules during egg maturation, which contain the components of the zona pellucida.

  3. The cortical reaction is the depolarization of the plasma membrane after sperm entry, which helps to block polyspermy.

  4. The cortical reaction is the release of the cortical granules after sperm entry, which converts the vitelline membrane into the fertilization membrane which blocks polyspermy.

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TLS Online TPP Program

#Question id: 23985

#Unit 1. Molecules and their Interaction Relevant to Biology

The teacher has been glorified by the phrase 'Friend, Philosopher and Guide' because
TLS Online TPP Program

#Question id: 23986

#Unit 1. Molecules and their Interaction Relevant to Biology

Suppose a child is devoid of social efficiency then what measures will you adopt to overcome this difficulty?
TLS Online TPP Program

#Question id: 23987

#Unit 1. Molecules and their Interaction Relevant to Biology

If there is a great problem of discipline in your school which disrupts the routine of the school. What would you like to do to deal with such a utter chaos?
TLS Online TPP Program

#Question id: 23988

#Unit 1. Molecules and their Interaction Relevant to Biology

Suppose luckily you get an opportunity to serve the minority institution. The castism and narrow views are the rules of the place. As you are little bit having scientific outlook and you become prey of victimisation. How would you find yourself in a equilibrium in such an institution?
TLS Online TPP Program

#Question id: 23989

#Unit 1. Molecules and their Interaction Relevant to Biology

If your principal indulges in corruption and forces you to co-operate, how would you make compromise with such a superior fellow?
TLS Online TPP Program

#Question id: 809

#Unit 1. Molecules and their Interaction Relevant to Biology

A single-stranded DNA molecule contains 40 nucleotides with equal amounts of A, C, G, and T. This DNA strand can combine with a complementary DNA strand to form a double-stranded DNA molecule. Which of the following double-stranded DNA molecules would denature at a lower temperature than the 40 base-pair double-stranded molecule described above?