The Following Questions Refer to the Description and Table 28

question 22

Multiple Choice

The following questions refer to the description and Table 28.1 below.
Diatoms are encased in Petri-plate-like cases (valves) made of translucent hydrated silica whose thickness can be varied. The material used to store excess calories can also be varied. At certain times, diatoms store excess calories in the form of the liquid polysaccharide, laminarin, and at other times, as oil. Below are data concerning the density (specific gravity) of various components of diatoms, and of their environment.
Table 28.1: Specific Gravities of Materials Relevant to Diatoms
$$\begin{array} { l l } \text { Material } & \text { Specific Gravity } ( \mathrm { kg } / / \mathrm { m }^{3} ) \\\text { Pure water } & 1000 \\\text { Seawater } & 1026 \\\text { Hydrated silica } & 2250 \\\text { Liquid laminarin } & 1500 \\\text { Diatom oil } & 910\end{array}$$
-A certain unicellular eukaryote has a siliceous (glasslike) shell and autotrophic nutrition. To which group does it belong?

• A)dinoflagellates
• B)diatoms
• C)brown algae
• D)radiolarians
• E)oomycetes

Compare and contrast the characteristics of vision and hearing in terms of stimuli and information processing.

Understand the common sources of frustration and their differentiation from other emotions.

Comprehend the various conceptualizations and sources of stress, particularly those outlined by Lazarus.

Identify and differentiate between the types of conflicts and pressures individuals face in stressful situations.

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Definitions:

Manager

An individual responsible for directing, controlling, and administering a group, project, or organization.

Maintaining

The process of keeping something in a condition of efficiency or preservation through continual repair or care.

Text

Written or printed words, particularly those forming a body of content for reading.

Options

Financial derivatives that give the buyer the right, but not the obligation, to buy or sell an asset at a specified price within a specified time.