Woody plants have which two compounds in their cell walls?
A) chlorophyll and cellulose B) chitin and lignin
C) cellulose and lignin D) chitin and cellulose
Answer: C
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In the international division of labor, one reason for China's role as a major producer of everything from shoes to toys is the endless supply of people who will work for ________ an hour
A) nothing B) 6 cents C) 60 cents D) 6 dollars E) 60 dollars
Each carbon atom can share pairs of electrons with as many as ________ other atom(s)
Fill in the blank(s) with correct word
Morphogens are substances that help control development
Indicate whether the statement is true or false
In performing a Gram's staining techniques, the decolorization reagent is
A. A mixture of acetone and alcohol B. A mixture of different alcohols C. A mixture of acid and alcohol D. A mixture of acetone and ether E. none of the above