More than one sperm is prevented from fertilizing an egg by all of the following mechanisms except:
A. Opening sodium channels in the plasma membrane causes a change in the electrical charge of the membrane.
B. Secretion of material from cortical granules pushes sperm away from the already fertilized egg.
C. A slow block to polyspermy occurs.
D. Meiosis II is completed by the egg.
E. A fast block to polyspermy occurs.
Answer: D
You might also like to view...
One sign of a UTI is frequent urination, which is called ________________
Fill in the blank(s) with correct word
Bone growth at the articular cartilage is responsible for bone growth of
A. long bones. B. only the cartilage. C. flat bones. D. short bones. E. irregular bones.
Which type of vessel has the greatest compliance?
A. Arterioles B. Arteries C. Veins D. Capillaries
A neuron with nicotinic receptors is exposed to acetylcholine. This will not lead to
A) activation of chemically gated ion channels. B) excitation of the neuron. C) entry of sodium ion. D) binding of the nicotine to the channel. E) activation of muscarinic receptors.