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TLS Online TPP Program

#Question id: 5667

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: 11034

#Unit 7. System Physiology – Animal

An increase in shear stress in a blood vessel results in which of the following changes?
TLS Online TPP Program

#Question id: 1569

#Unit 4. Cell Communication and Cell Signaling

A bacterium entering the body through a small cut in the skin will do which of the following?
TLS Online TPP Program

#Question id: 16496

#Unit 12. Applied Biology

Neomycin phosphotransferase  gene is used as a selectable marker. It provides resistence against which antibiotic ?
TLS Online TPP Program

#Question id: 2956

#Unit 2. Cellular Organization

The product of the cdc2 gene is
TLS Online TPP Program

#Question id: 5185

#General Aptitude

The difference , the sum and the product of two integers are in the proportion 1:3:10 . The two integers are :