Slow block to polyspermy (cortical granule reaction) becomes active about a minute after the first successful sperm-egg fusion

TLS Online TPP Program

#Id: 1521

#Unit 2. Cellular Organization

Free-energy change for dissociation of a subunit from the D-form polymer is more favorable (negative) than the free-energy change for dissociation of a subunit from the T-form polymer.

TLS Online TPP Program

#Id: 1775

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 10375

#Unit 4. Cell Communication and Cell Signaling

One individual, however, expresses only a small number of these molecules—up to six different class I molecules and 12 or more different class II molecules.

TLS Online TPP Program

#Id: 6980

#Unit 8. Inheritance Biology

Polyploidy 

Some organisms possess more than two sets of chromosomes—they are polyploid.  Allopolyploidy Condition in which the sets of chromosomes of a polyploid individual are derived from two or more species.  Autopolyploidy Condition in which all the sets of chromosomes of a polyploid individual are derived from a single species.

TLS Online TPP Program

#Id: 10068

#Unit 4. Cell Communication and Cell Signaling

In absence of Ca2+, 

the hinges can flex, the structure becomes floppy & adhesion fails