A Flask Containing Photosynthetic Green Algae and a Control Flask

question 42

Multiple Choice

A flask containing photosynthetic green algae and a control flask containing water with no algae are both placed under a bank of lights, which are set to cycle between 12 hours of light and 12 hours of dark. The dissolved oxygen concentrations in both flasks are monitored. Predict what the relative dissolved oxygen concentrations will be in the flask with algae compared to the control flask.

• A) The dissolved oxygen in the flask with algae will always be higher.
• B) The dissolved oxygen in the flask with algae will always be lower.
• C) The dissolved oxygen in the flask with algae will be higher in the light, but the same in the dark.
• D) The dissolved oxygen in the flask with algae will be higher in the light, but lower in the dark.
• E) The dissolved oxygen in the flask with algae will not be different from the control flask at any time.

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Definitions:

Heterosexual

A sexual orientation characterized by a romantic or sexual attraction towards individuals of the opposite sex.

Sexual Response Cycle

The sequence of physical and emotional changes that occur as a person becomes sexually aroused and participates in sexually stimulating activities, typically including stages such as arousal, plateau, orgasm, and resolution.

Men and Women

Terms referring to the two primary categories of human gender, each associated with distinct biological and societal roles.

Biological Factors

Natural influences on organisms, including genetic, neurophysiological, and anatomical aspects that affect behavior and health.