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Cortical Reaction in Sea Urchin Eggs: Fertilization Myths & Realities
Chapter 0, Problem 1(choose chapter or problem)
The cortical reaction of sea urchin eggs functions directly in
a. the formation of a fertilization envelope.
b. the production of a fast block to polyspermy.
c. the release of hydrolytic enzymes from the sperm.
d. the generation of an electrical impulse by the egg.
e. the fusion of egg and sperm nuclei.
Questions & Answers
QUESTION:
The cortical reaction of sea urchin eggs functions directly in
a. the formation of a fertilization envelope.
b. the production of a fast block to polyspermy.
c. the release of hydrolytic enzymes from the sperm.
d. the generation of an electrical impulse by the egg.
e. the fusion of egg and sperm nuclei.
ANSWER:Step 1 of 3
Echinoidea is a class of marine echinoderms that includes sea urchins. Their flattened or spherical bodies are coated with spines, a defensive mechanism. Typically, sea urchins have a test made up of connected plates and are a hard, calcareous shell. They have tube feet, which help with breathing, mobility, and feeding.
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Cortical Reaction in Sea Urchin Eggs: Fertilization Myths & Realities
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Discover the complex world of sea urchin reproduction, focusing on the essential role the cortical reaction plays in egg fertilization. Uncover common myths surrounding this process and learn what actually happens at the cellular level. Gain insight into how the formation of a fertilization envelope is crucial for successful fertilization.