Guard Cells Are the Only Cells in the Epidermis That

question 39

Multiple Choice

Guard cells are the only cells in the epidermis that contain chloroplasts and can undergo photosynthesis. This is important because

• A) chloroplasts sense when light is available so that guard cells will open.
• B) photosynthesis provides the energy necessary for contractile proteins to flex and open the guard cells.
• C) guard cells will produce the O₂ necessary to power active transport.
• D) ATP is required to power proton pumps in the guard cell membranes.
• E) chloroplasts sense when light is available so that guard cells will open and guard cells will produce the O₂ necessary to power active transport.

Explain the role of hormones in the reproductive behavior of certain animal species.

Describe mechanisms of fertilization and polyspermy prevention.

Understand the process of regeneration and its implications for population dynamics.

Identify the characteristics and outcomes of parthenogenesis.

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Definitions:

Dividend

Profits paid out to shareholders by a corporation, usually as a form of earnings distribution.

Information Ratio

A measure of portfolio returns above the returns of a benchmark, to the volatility of those returns.

Residual Standard Deviation

A measure of the amount of variance in a dataset that is not explained by the predictive variables in a regression model.

Beta

Beta is a measure of a stock's volatility in relation to the overall market, indicating how much its price is expected to move compared to market movements.