Amoebae Move by Crawling Over a Surface (Cell Crawling), Which

question 18

Multiple Choice

Amoebae move by crawling over a surface (cell crawling) , which involves ________.

• A) growth of actin filaments to form bulges in the plasma membrane
• B) setting up microtubule extensions that vesicles can follow in the movement of cytoplasm
• C) reinforcing the pseudopod with intermediate filaments
• D) cytoplasmic streaming

---

Definitions:

Unemployment

The failure to use all available economic resources to produce desired goods and services; the failure of the economy to fully employ its labor force.

Barter System

An economic system where goods or services are directly exchanged for other goods or services without using money.

Coincidence of Wants

A situation in a barter system where two parties each have a good or service that the other desires, allowing for a direct trade.

Division of Labor

The assignment of different parts of a manufacturing process or task to different individuals in order to improve efficiency and productivity.