Active guanylyl cyclase causes the sperm cell to produce more cGMP, that activates a calcium channel in the cell membrane of the sperm tail.

TLS Online TPP Program

#Id: 2170

#Unit 11. Evolution and Behavior

The components of fitness are survival and reproduction.

TLS Online TPP Program

#Id: 1078

#Unit 5. Developmental Biology

According to the Quartet Model, floral organ identity is regulated by tetrameric complexes of the ABCE proteins.

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#Id: 3059

#Unit 10. Ecological Principles

The species-area hypothesis S = c Az

TLS Online TPP Program

#Id: 7788

#Unit 2. Cellular Organization

The mutations responsible for this altered cellular localization occur within a specific seven-residue sequence rich in basic amino acids near the C-terminus of the protein: Pro-Lys-Lys-Lys-Arg-Lys-Val.

TLS Online TPP Program

#Id: 9457

#Unit 4. Cell Communication and Cell Signaling

Each members of JAK family of kinases contains:

An N-terminal domain that binds to the receptor

A C-terminal kinase domain 

A middle pseudokinase domain