The selective permeability of a membrane refers to ____

a. the movement of a molecule from an area of greater concentration to an area of lesser
concentration.
b. the ability of a substance to pass through a membrane
c. the ability of only certain molecules to pass across a membrane
d. the need for carrier proteins to transport some molecules
e. the ability of molecules to be transported across the membrane only certain times of the
day


C

Biology & Microbiology

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An example of a micronutrient is phosphorus

____________________ Indicate whether the statement is true or false.

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Which of the following nutrients would yield the most energy per gram?

A) Minerals B) Proteins C) Vitamins D) Carbohydrates E) Lipids

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In which order does blood from the veins flow through the mammalian heart?

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