Most enzymes
A.
are generic, typically recognizing a number of different substrates.
B.
are specific, typically recognizing a single or a few substrates.
C. are active over a wide pH range.
D.
are active over a wide temperature range.
E.
are generic, typically recognizing a number of different substrates AND are active over a wide pH range.
B
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If there are 20 chromatids in a cell, how many centromeres are there?
A) 10 B) 20 C) 30 D) 40 E) 80
According to the evidence collected so far, the animal kingdom is _____
A) monophyletic B) paraphyletic C) polyphyletic D) euphyletic E) multiphyletic
In presenting data that result from an experiment, a group of students show that most of their measurements fall on a straight diagonal line on their graph
However, two of their data points are "outliers" and fall far to one side of the expected relationship. What should they do? A) Do not show these points because clearly something went wrong in the experiment. B) Average several trials, rule out the improbable results, and do not show them in the final work. C) Show all results obtained and then try to explore the reason(s) for these outliers. D) Change the details of the experiment until they can obtain the expected results.
Products of photosynthesis The main product of photosynthesis used by plants is
a) glucose. b) oxygen. c) carbon dioxide. d) chlorophyll. e) sunlight.