In cerebrospinal fluid the concentration of ___ is higher and the concentration of ___ is lower than in plasma.
A. K+, H+
B. H+, K+
C. Na+, Cl-
D. Cl-, Na+
Ans: B. H+, K+
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Lysis of marine algae and cyanobacteria releases the major osmoregulatory solute, dimethylsulfoniopropionate (DMSP), which is degraded into the most abundant organic S compound in nature, ________
A) dimethyl sulfide (CH3-S-CH3) B) hydrogen sulfide (H2S) C) gypsum (CaSO4) D) elemental sulfur (So)
Prions are easily destroyed by common sterilization procedures
Indicate whether this statement is true or false.
Attributes of Welwitschia mirabilis include
_____ It has only two leaves. _____ It obtains most of its water from seasonal heavy rains. _____ It lives under desert conditions. _____ It is a gnetophyte. _____ Its stems are photosynthetic, but its leaves are not.
The pH of an aqueous solution is an indication of the concentration of available protons. However, you should not expect to find lone protons in solution; rather, the proton is added to a water molecule to form a(n) ______________ ion
(a) hydroxide (b) ammonium (c) chloride (d) hydronium