The Formation of the Fertilization Envelope in a Sea Urchin

question 45

Multiple Choice

The formation of the fertilization envelope in a sea urchin egg is most directly stimulated by an increase in the cytosolic concentration of which of the following ions?

• A) calcium ions
• B) hydrogen ions
• C) potassium ions
• D) sodium ions

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Definitions:

Real Estate Sales

Transactions involving the transfer of ownership rights in property or land from one party to another, typically facilitated by agents or brokers.

Contra-Asset Account

A contra-asset account is an account used in a ledger to reduce the value of a related account. It has a credit balance and is used to adjust the value of an asset account to its net value.

Consignment-In

A transaction arrangement where goods are placed in the care of another party to sell, but ownership and title remain with the supplier until sale.

Credit Balance

A situation where the total credits in an account exceed the total debits, often reflecting a company's liability or revenue.