1. What is the osmotic concentration of a solution containing 300 mM NaCl and 100 mM...

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Medical Sciences

1. What is the osmotic concentration of a solution containing300 mM NaCl and 100 mM glucose? Is it iso-, hypo-, or hyper-osmolar?
A.
700 mOsm/L, hyper-osmolar
B.
600 Osm/L, iso-osmolar
C.
200 Osm/L, hypo-osmolar
D.
400 mOsm/L, hyper-osmolar
2. Ocean water has a high salt concentration compared to bodyfluids. If you were adrift at sea drinking seawater will not helpyou, and may make you even more dehydrated! What explains this?
A.
Water diffuses from body tissues into the intestines because ofthe higher osmolarity of seawater.
B.
Waste contaminants in seawater clog pores in intestinalepithelial cells, thereby blocking water absorption.
C.
Water is actively pumped by the intestinal epithelial cells intothe body from the intestine. This requires enormous amounts of ATP(active transport) and the waste products are osmolytes.
D.
Seawater is hypertonic and that makes cells swell.
3.Â Â Â What you predict the concentration of Na+,K+, and Ca2+ in a T cell to be?
A.130 mM Na+, 3.5 mM K+, and 2.4 mM Ca2+
B.4 mM Na+, 70 mM K+, and 0.4 ÂµM Ca2+
C. 140 mM, 5.2 mM, and 0.2 mM
D. 9.5 mM Na+, 140 mM K+, and 0.1 ÂµM Ca2+

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3.7 Ratings (439 Votes)

1st question Osmolarity of a solution is the sum of concentration of solutes present in it In the solution the sodium chloride dissociate to form sodium ions and chloride ions Thus 300 mM of See Answer

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	A.	700 mOsm/L, hyper-osmolar
	B.	600 Osm/L, iso-osmolar
	C.	200 Osm/L, hypo-osmolar
	D.	400 mOsm/L, hyper-osmolar

	A.	Water diffuses from body tissues into the intestines because ofthe higher osmolarity of seawater.
	B.	Waste contaminants in seawater clog pores in intestinalepithelial cells, thereby blocking water absorption.
	C.	Water is actively pumped by the intestinal epithelial cells intothe body from the intestine. This requires enormous amounts of ATP(active transport) and the waste products are osmolytes.
	D.	Seawater is hypertonic and that makes cells swell.