The movement of molecules from an area of high concentration to an area of lower concentration is called ________.
A. osmosis
B. active transport
C. diffusion
D. facilitated diffusion
E. endocytosis
Answer: C
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Reactive oxygen species are detoxified by a general category of molecules referred to as ____
Fill in the blank with the appropriate word.
Birds are evolved from reptiles, but also differ dramatically. Which features of birds differentiate them from most reptiles?
What will be an ideal response?
Lack of which element can lead to goiter?
a. iron b. iodine c. calcium d. zinc e. magnesium
Which of the following piece of fossil evidence was not observed during Darwin's journey aboard the Beagle?
A. fossilized marine shells in the cliffs of the Andes Mountains B. fossilized remains of a giant ground sloth C. 13 different species of fossilized finches on the Galápagos Islands D. fossilized remains of the Glyptodont