MMP2 is a protein that digests extracellular matrices (such as the zona) and may be responsible for digesting a pathway to the oocyte Acrosin bind secondarily to the zona, keeping the sperm in the channel it creates

TLS Online TPP Program

#Id: 5415

#Unit 7. System Physiology – Animal

Fibrous astrocytes, contain many intermediate filaments are found primarily in white matter.Protoplasmic astrocytes are found in gray matter and have a granular cytoplasm.

TLS Online TPP Program

#Id: 756

#Unit 3. Fundamental Processes

Base-pair geometry and the complementarity between the bases cannot reach the extraordinarily high levels of accuracy

TLS Online TPP Program

#Id: 5274

#Unit 7. System Physiology – Animal

When the potential reaches a threshold voltage of about −40 millivolts, the L-type calcium channels become “activated,” causing the action potential.

TLS Online TPP Program

#Id: 9108

#Unit 10. Ecological Principles

Antipredator Adaptations

TLS Online TPP Program

#Id: 9180

#Unit 11. Evolution and Behavior

Average fitness

In a species, only 1 of every 1000 seeds survives to reproductive age, and that those that survive produce an average of 3000 seeds.