Entrance of More Than One Sperm

question 47

Multiple Choice

Entrance of more than one sperm

• A)is called polyspermy and is disastrous for animal zygotes.
• B)results in epigenesis.
• C)is neutralized by fusion with polar bodies.
• D)results in formation of a large pronucleus.
• E)initiates cleavage.

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Definitions:

Antiaromatic

Compounds that possess conjugated pi electrons in cyclic structures but with destabilization due to unfulfilled criteria for aromatic stability.

Nonaromatic

Describes a compound that does not meet the criteria for aromaticity, lacking a cyclic, planar structure with a delocalized pi electron system over the ring.

Pyrene

A polycyclic aromatic hydrocarbon (PAH) consisting of four fused benzene rings, resulting in a flat aromatic system.

Huckel Rule

A rule that helps predict the aromaticity of planar rings based on the count of pi electrons, stating that aromatic compounds must have 4n+2 pi electrons.