Anything that has weight and occupies space can be described as ________.
A. an atom
B. a molecule
C. a compound
D. matter
Answer: D
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Which is not one of the bases found in DNA nucleotides?
A. Adenine B. Diamine C. Cytosine D. Thymine E. Guanine
Many second messenger systems activate ________, enzymes that transfer a phosphate group from ATP to a protein. The phosphorylation of proteins sets off a series of intracellular events that lead to the ultimate cellular response.
Fill in the blank(s) with the appropriate word(s).
Another name for the subcutaneous layer that shares names with a needle is the ________.
What will be an ideal response?
Muscle tissue, one of the four basic tissue groups, consists chiefly of cells that are highly specialized for
A) conduction. B) contraction. C) peristalsis. D) cushioning. E) None of the answers is correct.