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TLS Online TPP Program

#Question id: 12077

 RU486 causes abortion if it is administered before or soon after implantation. What is the specific effect of RU486?

#Unit 7. System Physiology – Animal
  1. It binds to luteinizing hormone receptors, stimulating the secretion of progesterone from the corpus luteum
  2. It blocks progesterone receptors so that progesterone has no effect within the body
  3. It blocks the secretion of follicle-stimulating hormone by the pituitary
  4. It blocks the effects of oxytocin receptors in the uterine muscle
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TLS Online TPP Program

#Question id: 2534

#Unit 2. Cellular Organization

How the matrix polysaccharides are differ from the cellulose?
TLS Online TPP Program

#Question id: 31055

#Unit 4. Cell Communication and Cell Signaling

MEK is a kinase that phosphorylates its target proteins on:
TLS Online TPP Program

#Question id: 2635

#Unit 2. Cellular Organization

In E. coli, deleting the ribosome binding site and region 1 of the trp attenuator and leaving the remainder of the attenuator intact has which of the following effects?
TLS Online TPP Program

#Question id: 28672

#Unit 2. Cellular Organization

Which proteins is involved to inhibit Cdc25 phosphatase and hold it into inactive condition
TLS Online TPP Program

#Question id: 19707

#Unit 13. Methods in Biology

Currents caused by opening of which of the following channels contribute to the repolarization phase of the action potential ofventricular muscle fibers?