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TLS Online TPP Program

#Question id: 5683

There may be an important connection between sperm translocation and capacitation. Which of the following option is correct explanation of above statement?

#Unit 5. Developmental Biology

  1. The influx of bicarbonate ions (and possibly other ions) alkalinizes the sperm, raising its pH.

  2. before entering the ampulla of the oviduct, the uncapacitated sperm bind actively to the membranes of the oviduct cells in the narrow passage (the isthmus) preceding it.  This binding is temporary and appears to be broken when the sperm become capacitated.

  3. The cholesterol efflux from the sperm cell membrane is thought to change the location of its “lipid rafts,” isolated regions that often contain receptor proteins that can bind the zona pellucida and participate in the acrosome reaction.

  4. Capacitation is a transient event but translocation is not.

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TLS Online TPP Program

#Question id: 20967

#Unit 12. Applied Biology

Transgenic models exist for ________ disease.
TLS Online TPP Program

#Question id: 29548

#Unit 6. System Physiology – Plant

R genes recognizes
TLS Online TPP Program

#Question id: 4369

#Unit 3. Fundamental Processes

Which of the following is an incorrect association between transcription factors and their characteristics?
TLS Online TPP Program

#Question id: 15300

#Unit 5. Developmental Biology

In hippo signaling pathway, the activation of the Cdx2 gene in the trophoblast cells appears to be regulated by the Yap protein, which in turn is a cofactor for the transcription factor Tead4. Tead4 is found in the ________blastocyst
TLS Online TPP Program

#Question id: 1416

#Unit 4. Cell Communication and Cell Signaling

Which of the following forms a dimer that gets displaced from the surface of the mitochondria by EGL-1?