Which Statement Best Reflects the Evolutionary History of the Ligand-Gated

question 17

Multiple Choice

Which statement best reflects the evolutionary history of the ligand-gated channel?

• A) The sequence homology of the ligand-gated receptors is similar to that of voltage-gated receptors.
• B) Ligand-gated channels have had a minimum of three independent appearances in evolutionary history.
• C) Ligand-gated channels in the neuromuscular junction are evolutionarily distinct from ligand-gated channels in the brain.
• D) Most kinds of ligand-gated channels appear to have evolved from a common ancestor.

---

Definitions:

Five Year Bonds

Debt securities issued with a maturity of five years, typically paying interest semi-annually.

Factor Receivables

The financial practice of selling accounts receivable to a third party at a discount to immediately generate cash.

Uncollectible Accounts

Accounts receivable that are recognized as not being collectible, representing losses to the company.

Lending Institution

A financial institution that provides loans to individuals or businesses.