Referring to the figure of sperm penetration and fusion, match the lettered description with the correct numbered step in the figure.
A. Some of the zona pellucida is degraded by acrosomal enzymes.
B. Enzymes are released by cortical granules that harden the zona pellucida.
C. Sperm and egg fuse at the plasma membrane.
D. Sperm penetrates the corona radiata.
E. The sperm nucleus dissociates and enters the cytoplasm.
F. Additional sperm can no longer penetrate.
1. Step I
2. Step II
3. Step III
4. Step IV
5. Step V
6. Step VI
1. D. Sperm penetrates the corona radiata.
2. A. Some of the zona pellucida is degraded by acrosomal enzymes.
3. C. Sperm and egg fuse at the plasma membrane.
4. E. The sperm nucleus dissociates and enters the cytoplasm.
5. B. Enzymes are released by cortical granules that harden the zona pellucida.
6. F. Additional sperm can no longer penetrate.
You might also like to view...
The cartilaginous organ between the pharynx and the trachea, which contains the vocal cords in humans is called the ________.
Fill in the blank(s) with the appropriate word(s).
Changes in the physical and biological structures of communities as one moves across the landscape are referred to as ________
Fill in the blank(s) with correct word
The drug taxol stabilizes microtubules so they cannot shorten. If taxol were added during anaphase of mitosis, what effect would you expect it to have on anaphase movements?
a. It would stop all movements. b. It would stop anaphase A but not anaphase B. c. It would stop anaphase B but not anaphase A. d. It would have no effect. e. None of the above
Cat scratch disease is caused by Bartonella (bacilliformis/henselae/quintana)
What will be an ideal response?