Z Flashcards
1
Q
Z-Disk
A
The protein plate at the end of a sarcomere that serves as the insertion site of actin thin filaments.
2
Q
Zona Pellucida
A
A thickened glycoprotein extracellular matrix of a mammalian ovum; it binds the sperm to initiate the acrosomal reaction.
3
Q
Zwitterion
A
A molecule with groups that can become positive and others that can become negative.
4
Q
Zygote
A
The single cell arising from the fertilization of an ovum by a sperm.
