Randi Is Considering Adopting a Vegetarian Diet

question 21

Multiple Choice

Randi is considering adopting a vegetarian diet. She has two friends who are vegetarians: Serdar, who has followed a vegan diet for 10 years, and Rafael, who follows a lacto-ovo vegetarian diet. Randi knows she has a lot to learn before becoming a vegetarian. She has decided to have Serdar and Rafael over for dinner to talk more about their diets and gather tips. For dinner, she makes a vegetarian stir-fry that consists of fresh vegetables, tofu, and spices; a noodle casserole with egg noodles, chicken broth, and cheese; and a strawberry shortcake with homemade ice cream for dessert. She is excited to share the meal with her friends while she learns more about their dietary lifestyles.
After learning more about Serdar's dietary lifestyle, Randi realizes there are several nutrients that may be lacking in a vegan diet. Which nutrient is most likely a concern?

• A) DHA
• B) potassium
• C) fiber
• D) vitamin C
• E) vitamin A

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Definitions:

Difference Threshold

The minimal detectable difference needed to discriminate between two stimuli.

Auditory Convergence

The integration of sound information from both ears at certain points in the auditory pathway, enhancing sound localization and processing.

Refractory Threshold

The refractory threshold is the period following an action potential during which a neuron is incapable of firing another action potential or the threshold is significantly increased.

Difference Threshold

The smallest detectable difference between two stimuli that a person can sense at least half the time.