Module 4.7c Quiz

Dr. Gavin studies the sugar found in the bloodstream that provides energy for the human body. Gavin studies

• orexin.

• leptin.

• PYY.

• glucose.

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NGSS.HS-LS1-7

Which of the following would be an appropriate operational definition for a researcher who wants to study hunger-arousing factors?

• Leptin levels

• PYY levels

• Orexin levels

• Set point levels

Which of the following best explains, in terms of ethical principles, why Ancel Keys’ semistarvation study would be unlikely to be conducted today?

• The participants experienced greater-than-usual harm in the study because the participants likely experienced permanently decreased glucose levels.

• The participants experienced greater-than-usual harm in the study because the participants’ basal metabolic rates were possibly impacted past the duration of the study.

• The participants experienced greater-than-usual harm in the study because the participants experienced a disruption in the ecology of eating.

• The participants experienced greater-than-usual harm in the study because the participants’ arcuate nuclei were destroyed.

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Harvey’s weight has remained approximately the same over the last 10 years. However, when he turned 38, he decided that he wanted to eat smaller portions at each meal. He lostweight quickly after this decrease in caloric intake, but he noticed that his weight loss slowed over time.

Which of the following best explains why Harvey’s weight remained the same for a decade?

• Arcuate nucleus

• Set point

• Ecology of eating

• PYY

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NGSS.HS-LS1-3

Harvey’s weight has remained approximately the same over the last 10 years. However, when he turned 38, he decided that he wanted to eat smaller portions at each meal. He lostweight quickly after this decrease in caloric intake, but he noticed that his weight loss slowed over time.

Which of the following best explains Harvey’s slowed weight loss over time after he reduced the amount of food he ate at each meal?

• His PYY level increased.

• His orexin level increased.

• His basal metabolic rate decreased.

• His ghrelin level decreased.

Tags

NGSS.HS-LS1-3

Which of the following research methods has been used to support the genetic influence on weight?

• Case studies

• Twin studies

• Experiments

• Surveys