A Psychologist Is Interested in the Social Interactions of Preschool

question 1

Multiple Choice

A psychologist is interested in the social interactions of preschool children. She measures the number of verbal interactions that each child at a preschool engages in during a day. Here is the frequency distribution of the data. The 50^th percentile point is _________.

• A) 65.50
• B) 62.15
• C) 65.00
• D) 74.00

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Definitions:

Hydrolysis

A chemical reaction in which water is used to break down the bonds of a particular substance, such as in the digestion of nutrients.

Macromolecules

Large molecules essential for life, including proteins, nucleic acids, carbohydrates, and lipids, which perform a variety of vital functions in cells.

Competitive Inhibition

A form of enzyme inhibition where a substance competes with the substrate for binding to the active site of the enzyme.

Enzymes

Enzymes are biological molecules, typically proteins, that significantly speed up the rate of virtually all chemical reactions within cells without being consumed by those reactions.