Choose the defining characteristic of all arteries.
A. They only carry oxygenated blood.
B. They only carry blood away from the heart.
C. They only carry blood back to the heart.
D. They only carry deoxygenated blood.
Answer: B
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Which of the follwoing is NOT true of sebaceous glands?
a. They secrete oil. b. They are found in the skin. c. They release entire cells with the secretion. d. They are exocrine glands. e. They produce hormones
The pH of an acidic solution is.
a) less than 7 b) more than 7 c) equal to 7 d) cannot be determined
Which uses synthetic DNA plus DNA cloning techniques to introduce nucleotide changes at specific sites?
a. artificial chromosome synthesis b. ligation c. oligonucleotide replacement d. site-directed mutagenesis
A single muscle cell is referred to as a _____.
A. myofibril B. muscle fiber C. muscle neurons D. sarcolemma E. sarcomere