A Flask Containing Photosynthetic Green Algae and a Control Flask

question 15

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 that is 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. The dissolved oxygen in the flask with algae will ________.

• A) always be higher
• B) always be lower
• C) be higher in the light, but the same in the dark
• D) be higher in the light, but lower in the dark

---

Definitions:

Bad Debts Expense

Bad debts expense represents the estimated amount of accounts receivable that a company does not expect to collect due to customers' inability to fulfill payment obligations.

Notes Receivable

Financial assets representing the right to receive payments from a debtor for a specified amount by a certain date.

Receivables Turnover

A financial ratio indicating how quickly a company collects outstanding accounts receivable.

Current Ratio

A liquidity ratio that measures a company’s ability to cover its short-term liabilities with its short-term assets.