Steroid hormones are nonpolar molecules that travel in the blood. Explain how such molecules interact with the water of the plasma
What will be an ideal response?
Because they are nonpolar, steroids are hydrophobic and are excluded from dissolving within the watery plasma. Like other nonpolar plasma solutes, they require carrier proteins to be transported through the blood.
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Which layer of the heart wall consists of mesothelium and connective tissue?
a) Epicardium b) Myocardium c) Endocardium d) Fibrous pericardium e) None of the answer selections are correct
The structure that surrounds the heart is the ____________________________
Fill in the blank(s) with correct word
The enzyme(s) called ________ break(s) down the substrate called ________.
A. nucleases; nucleotides B. peptidases; proteins C. lactose; lactase D. lipases; micelles E. lactase; glucose
When acetylcholine binds to autonomic muscarinic receptors, ________.
A. heart rate increases B. voluntary movements occur C. intestinal motility decreases D. intestinal motility stops E. intestinal motility increases