The risk of heart attacks and stroke can be reduced by avoiding the conditions that damage the blood
vessel artheroslerotic plaque.
Indicate whether the statement is true or false.
ANS: F, endothelium
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Which of the following is true of carbon?
A) It forms only polar molecules. B) It can form a maximum of three covalent bonds with other elements. C) It is highly electronegative. D) It can form both polar and nonpolar bonds.
Which of the following choices represents the correct
sequence? a. microspores >>> meiosis >>> gametophyte >>> sperm b. meiosis >>> microspores >>> gametophyte >>> sperm c. gametophyte >>> meiosis >>> megaspores >>> eggs d. meiosis >>> gametophyte >>> megaspores >>> eggs e. gametophyte >>> mitosis >>> megaspores >>> eggs
The knee-jerk reflex used by physicians to check
nerve response is based on a. muscle spindles. b. stretch receptors. c. spinal cord synapses. d. muscle spindles and stretch receptors. e. all of these.
In female mammals, most of the inactive X chromosome becomes:a
associated with histones. b. transcriptionally active. c. euchromatin. d. replicated. e. heterochromatin.