The difference between simple and facilitated diffusion is that
A. facilitated diffusion requires energy while simple diffusion does not.
B. facilitated diffusion requires a carrier molecule while simple diffusion does not.
C. facilitated diffusion results in the exchange of substances across a membrane, while simple diffusion does not.
D. None of the above
B
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A deficiency of this vitamin causes pernicious anemia:
1.Niacin 2.Cobalamin 3.Folate 4.Vitamin C
Sue is the mother of a two-year-old named Tara. Sue wants to protect Tara from pesticides, chemicals, and other harmful contaminants on the food she serves her daughter. She is committed to only purchasing organic foods and preparing them in a healthy manner. What recommendations would you make to Sue?Sue's brother, Manuel, says she is going overboard by insisting that everything Tara eats is
labeled "organic." A disadvantage of buying certified organic foods that he mentions is that ____. a. more synthetic fertilizer residues will end up in waterways b. farmers may follow less humane animal welfare standards c. organic farming methods require greater water and energy consumption d. the food may be fertilized with improperly composted animal manure containing harmful organisms e. the foods may have lower amounts of phytochemicals
Consumption of protein, itself, is known to contribute to heart disease and mortality
a. True b. False Indicate whether the statement is true or false
Which of the following is a good source of vitamin D for vegetarians?
A) Fish B) Self-synthesis with exposure to sunlight C) Bananas D) Apples