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TLS Online TPP Program

#Question id: 12269

If a woman hears her baby cry, she may experience milk ejection from the nipples even before the baby is placed to the breast. What is the explanation for this?

#Unit 7. System Physiology – Animal
  1. The sound of the hungry baby’s cry elicits secretion of oxytocin from the posterior pituitary, which reaches the breast and causes contraction of the myoepithelial cells
  2. The sound of the hungry baby’s cry causes a reflex relaxation of the myoepithelial cells, allowing the milk to flow
  3. The sound of the hungry baby’s cry elicits a surge of prolactin from the anterior pituitary, which promptly stimulates milk production from the breast
  4. The sound of the hungry baby’s cry elicits sympathetic nervous system discharge that causes contraction of the myoepithelial cells
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TLS Online TPP Program

#Question id: 74

#Unit 1. Molecules and their Interaction Relevant to Biology

The enthalpy and entropy of the initial and final states of a reacting system are shown in the table. Calculate the change in free energy for the reaction when the temperature is 4°C.
TLS Online TPP Program

#Question id: 28213

#Unit 5. Developmental Biology

Specification of different mesodermal cell types in the frog Xenopus laevis by activin, a paracrine factor of the TGF-beta family. Which of the following observation is correct at the high concentration of activin?
TLS Online TPP Program

#Question id: 10592

#Unit 10. Ecological Principles

Given below are the steps to assess the population size of grasshoppers in a given area, the size of the population is estimated as follows


Which of the following correct combination of parameter?
TLS Online TPP Program

#Question id: 31331

#Unit 7. System Physiology – Animal

Which of the following has the greatest effect on the ability of blood to transport oxygen?
TLS Online TPP Program

#Question id: 12971

#Unit 10. Ecological Principles

One group of ecologists has suggested that producers are limited by competition for resources, primary consumers (herbivores) are limited by predation, and secondary consumers (carnivores) are limited by food. If this were true, at which of the following trophic levels would one expect to find substantial evidence for competitive exclusion?