The first major divergence of life gave rise to
all of the following except
a. bacteria.
b. archea.
c. ancestors of the eukaryotes.
d. endomembrane systems.
e. The first major divergence of life gave rise
to all of these
D
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Which of the following is not a property of water that results from hydrogen bonding?
A) The temperature of water changes very slowly. B) Many polar substances dissolve in water. C) Water molecules have cohesiveness. D) Ice melts at -100°C. E) Water has a high surface tension.
The work of James B. Sumner was to
A) discover ribozymes. B) prove that enzymes were carbohydrates. C) isolate the insulin hormone. D) originate the term ferments to describe enzymes. E) crystallize urease, the first enzyme isolated.
There is a cure for transmissible spongiform encephalopathies.
a. true b. false
The mitochondrial ATP synthase consists of several different protein subunits. Which subunit binds to ADP + Pi and catalyzes the synthesis of ATP as a result of a conformational change?
(a) transmembrane H+ carrier (b) F1 ATPase head (c) peripheral stalk (d) central stalk