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TLS Online TPP Program

#Question id: 7267

Endocrine disruptors can interfere with hormone function in many ways like, They can act as antagonists and inhibit the binding of a hormone to its receptor or block the synthesis of a hormone. which of the following example best explains the antagonistic effect of endocrine disruptors?

#Unit 5. Developmental Biology

  1. The endocrine disruptor diethylstilbestrol (DES), which binds to the estrogen receptor and mimics estradiol, a hormone that is very active in building the tissues of the female reproductive tract.

  2. DDE, a metabolic product of the insecticide DDT, can act as an anti-testosterone, binding to the androgen receptor and preventing normal testosterone from functioning properly.
  3. The herbicide atrazine, elevates the synthesis of estrogen and can convert testes into ovaries in frogs.
  4. Polychlorinated biphenyls (PCBs) disrupt the endocrine system is by interfering with the elimination and degradation of thyroid hormones.
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TLS Online TPP Program

#Question id: 28283

#Unit 5. Developmental Biology

Following statements are related to fast block to polyspermy, which statement is incorrect?
TLS Online TPP Program

#Question id: 1795

#Unit 4. Cell Communication and Cell Signaling

Stimulation of glucocorticoid synthesis by IL-1:
TLS Online TPP Program

#Question id: 24273

#Unit 4. Cell Communication and Cell Signaling

Which of the following physiological function perform by integrins?
TLS Online TPP Program

#Question id: 33476

#Unit 2. Cellular Organization

Find true and false statements
A. The structures of eukaryotic genes show extensive variation. 
B. Some eukaryotic genes are uninterrupted and their sequences are colinear with those of the corresponding mRNAs. 
C. Most multicellular eukaryotic genes are interrupted, but the introns vary enormously in both number and size.
TLS Online TPP Program

#Question id: 28768

#Unit 2. Cellular Organization

Given following paths from different sources feed substances into lysosomes for digestion, find out the A, B and C?