Which of These Would a Paleontologist Be Most Likely to Do

question 57

Multiple Choice

Which of these would a paleontologist be most likely to do in order to determine whether a fossil represents a reptile or a mammal?

• A) Look for the presence of milk-producing glands.
• B) Look for the mammalian characteristics of a four-chambered heart and a diaphragm.
• C) Because mammals are eutherians, look for evidence of a placenta.
• D) Use molecular analysis to look for the protein keratin.
• E) Examine the teeth.

Conceptualize the mechanism of action for key organic reagents (e.g., Grignard reagents, LiAlH4).

Explain the criteria for choosing suitable substrates for Grignard reagent formation.

Predict the outcomes of reactions involving the reduction of ketones and aldehydes.

Develop synthetic routes for the preparation of complex molecules from simpler precursors.

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