OpenSAT

Question #N1004

The process of photosynthesis is a complex one. Plants use sunlight to convert carbon dioxide and water into glucose, a type of sugar that fuels their growth. However, the process of photosynthesis isn’t limited to just producing glucose. Plants also produce other important compounds, including oxygen. The mechanism by which plants use sunlight to make glucose and oxygen is known as Photosystem II. The enzyme that drives Photosystem II is called Photosystem II, which absorbs energy-giving electrons from water molecules.

Which choice provides the best way to combine the sentences in the underlined portion of the passage into a single grammatically correct sentence?

A. The process of photosynthesis isn’t limited to just producing glucose, but plants also produce other important compounds, including oxygen, and the mechanism by which plants use sunlight to make glucose and oxygen is known as Photosystem II.

B. The process of photosynthesis isn’t limited to just producing glucose, but plants also produce other important compounds, including oxygen; the mechanism by which plants use sunlight to make glucose and oxygen is known as Photosystem II.

C. The process of photosynthesis isn’t limited to just producing glucose, but plants also produce other important compounds, including oxygen, the mechanism by which plants use sunlight to make glucose and oxygen is known as Photosystem II.

D. The process of photosynthesis isn’t limited to just producing glucose, but plants also produce other important compounds, including oxygen; the mechanism by which plants use sunlight to make glucose and oxygen is known as Photosystem II, which

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Correct Answer is: A

The best way to combine the sentences into a single grammatically correct sentence is to use the coordinating conjunction “and” to connect the independent clauses, since this choice includes the necessary punctuation. The other choices are incorrect because they either use incorrect punctuation, create a comma splice, or result in a run-on sentence.