Often connected to a petiole, ____ may be either simple or compound and are typically the main organs of
photosynthesis and gas exchange.
a. roots
b. leaves
c. flowers
d. stems
e. trichomes
ANSWER: b
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The flow of ____ and the cycling of ____ maintains nature’s organization
a. water; populations b. atoms; energy c. nutrients; water d. energy; materials e. raw materials; water
Cardiac muscle fibers lack striations
____________________ Indicate whether the statement is true or false.
Which of the following is true regarding noncompetitive inhibition?
A. The amino acid sequence of an enzyme is altered. B. Excess product blocks the active site. C. The active site is unable to bind substrate. D. Excess product enhances enzyme activity
The following belong together except which one?
A) microtubule B) microvilli C) aid in DNA movement D) comprise an internal skeleton