What are the three important functions of the lipid bilayer of the plasma membrane?
a. forms the basic membrane structure; hydrophilic interior acts as barrier; aids in RNA transfer
b. forms the basic membrane structure; hydrophobic interior acts as barrier; responsible for fluidity
c. forms the basic membrane structure; hydrophobic interior acts as barrier; aids in RNA transfer
d. allows electrical flow via nerves; hydrophobic interior acts as barrier; responsible for fluidity
e. allows electrical flow via nerves; hydrophilic interior acts as barrier; responsible for fluidity
b
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The left side of the heart receives __________ blood from the __________ circulation and pumps it into the systemic circulation
Fill in the blank(s) with correct word
Umbrella cells
a. are located in the kidney. b. are located in the bladder. c. are located in the urethra. d. are at the base of the internal urethral sphincter. e. none of these.
Where are intercalated cells found and what do they do?
A. Distal convoluted tubule; secretion of hydrogen or bicarbonate ions B. Collecting duct; secretion of hydrogen or bicarbonate ions C. Collecting duct; reabsorption of sodium D. Nephron loop; reabsorption of sodium E. Distal convoluted tubules; reabsorption of sodium
Name the hormones synthesized by the syncytiotrophoblast
What will be an ideal response?