The difference in the concentration of dissolved particles from one location to another is called a
A.) concentration gradient.
B.) concentrated solution.
C.) saline solution.
D.) dynamic gradient.
Ans: A.) concentration gradient.
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Indicate whether the statement is true or false.
The portion of an enzyme where the substrate binds is known as the ____
a. receptor site b. active site c. target receptor d. target site e. contact site
Energy ____ in an ecosystem and nutrients ____.
A. is cycled continuously; flow one way B. flows in all directions; flow one way C. flows two ways; flow one way D. is cycled continuously; are cycled continuously E. flows one way; are cycled continuously
The outermost barrier to penetration by microbial invaders is the ________.
Fill in the blank(s) with the appropriate word(s).