Over Evolutionary Time, Photosynthesis Has, in Effect, Introduced Challenges to Itself

question 151

Multiple Choice

Over evolutionary time, photosynthesis has, in effect, introduced challenges to itself by producing an oxygen atmosphere because:

• A)rubisco is an oxygenase.
• B)rubisco is a carboxylase.
• C)O₂ is a strong oxidant.
• D)rubisco is an oxygenase and O₂ is a strong oxidant.
• E)rubisco is an oxygenase and O₂ is a strong reductant.

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Definitions:

Operating Income

Earnings from a company's main business activities, excluding expenses like interest and taxes.

Operating Expenses

Operating expenses are the costs associated with running a company's core business operations, excluding the cost of goods sold, such as rent, utilities, and payroll.

Merchandising Business

A type of business that purchases goods and sells them at a higher price without changing their form.

Merchandising Income Statement

A financial statement that shows the gross profit, operating expenses, and net income of a company that buys and sells goods.