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.

---

Definitions:

Writing Approach

The method or style a writer uses to convey their ideas or tell a story.

Persuasive

Having the ability to convince or influence others through argument or presentation.

Objective

A goal or aim that a person or an organization strives to achieve.

Legalese

The formal and technical language that is characteristic of legal documents and proceedings, often criticized for being difficult to understand.