Tay-Sachs disease, phenylketonuria, and cystic fibrosis are all examples of

A. single gene disorders.
B. multifactorial inheritance.
C. chromosomal abnormalities.
D. mutations.


Answer: A

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Kayla is playing tag? she easily dodges the attempts of her younger brother to tag her by stopping quickly, changing directions, and maneuvering around obstacles. She is most likely at least

a. three years old. b. four years old. c. five years old. d. six years old.

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Someone who buys or uses goods and services is called a ________________.

a. consumer b. buyer c. seller d. producer

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Play types that can be effectively promoted outdoors include

a. solitary play. b. imaginative play. c. games with rules. d. all of the above.

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You have been juggling too many obligations and are on social overload. You never have a moment to yourself. This is a type of

A. alienation. B. opportunity. C. isolation. D. loneliness.

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