Epithelial Tissues Have Polarity, with an Apical Side That Faces

question 18

Multiple Choice

Epithelial tissues have polarity, with an apical side that faces the environment and a basolateral side that faces the interior of the animal. Because of the harsh environmental exposure on the apical side, epithelial cells have a short life span of 2- 6 days. Which of the following is the most likely reason that the tissue as a whole does not wear away, despite the short life spans of the cells?

• A) The epithelial tissue is unusually thick.
• B) The tissue has cells that actively undergo mitosis and cytokinesis to replace the lost cells.
• C) The degraded tissue is recycled and restored to its original site.
• D) New cells are transported in the blood to the site where old cells have worn away.

Describe the characteristics and impact of subcellular microorganisms.

Understand the complications and specific diseases caused by pathogenic bacteria.

Identify beneficial bacteria and their functions within the human body.

Classify microorganisms based on their cellular structure.

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Definitions:

Dividend Irrelevance Theory

A theory suggesting that an investor's choice between investing in companies that pay dividends and those that do not does not affect the investor's overall return.

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A financial strategy involving the reduction of dividend payouts to shareholders in the short-term, typically with the aim of reallocating funds for company growth or debt reduction.

Future Dividends

Predicted payments made by a corporation to its shareholders out of its earnings in the future.

Stock Split

An action by a company to divide its existing shares into multiple shares to boost the liquidity of the shares, although the firm's overall market capitalization remains unchanged.