At rest, veins hold about ____ percent of the body's blood.
A. 40
B. 50
C. 60
D. 70
E. 80
Answer: C
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Mutations resulting from exposure to physical or chemical agents are called ________ mutations.
Fill in the blank(s) with the appropriate word(s).
Abnormal epigenetic patterns of DNA ____________________ are associated with many types of cancer, and the removal of ____________________ groups can activate genes involved with cell growth and can increase genomic instability
Fill in the blank(s) with correct word
Most archaeal cell walls consist of ____; most bacterial cell walls consist of a polymer of peptides and polysaccharides
a. lipids b. proteins c. phospholipids d. glycoproteins e. glycolipids
Centrioles and a starburst cluster of spindle fibers would be found in
a. both plant and animal cells. b. only plant cells. c. only animal cells. d. none of the above.