The Genus Latrodectus Includes Several Species, Including Spiders Commonly Called

question 16

Multiple Choice

The genus Latrodectus includes several species, including spiders commonly called widow spiders. The black widow is perhaps the most notorious member of this genus, and some species of black widows exhibit the familiar red hourglass on their ventral side. Black widows have large venom glands, and their bite can be harmful to humans. However, these bites very seldom lead to death in humans if proper medical treatment is provided. In comparison with females, adult male black widows are often gray or brown in color, rather than black, and they are only about half the size of females. As a result, they have smaller venom glands and tend to be less of a health concern. Black widows produce a neurotoxin called latrotoxin, and as the venom spreads through the body, it causes the release of neurotransmitters, including acetylcholine. Which of the following is likely a symptom of exposure to the venom latrotoxin?

• A) malfunction of sodium-potassium pumps
• B) paralysis
• C) constant muscular contractions
• D) continuous action potentials along axons

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Definitions:

Periodic Inventory System

An inventory management method where updates to inventory records are made at specific intervals, not continuously.

Inventory Account

An account on the balance sheet representing the total cost of goods a company intends to sell to customers, including raw materials, work-in-progress, and finished goods.

Period-End

Marks the conclusion of an accounting period, at which point various accounting entries are finalized, and reports are prepared.

Current Asset Account

An account on the balance sheet representing the value of assets that are expected to be converted into cash, sold, or consumed within a year or the operating cycle, whichever is longer.