Friedrich Miescher, after he began to study the chemical composition of the nucleus, was one of the first to ____
a. propose the nuclear structure of the H5N1 virus
b. discover that the nucleus contained DNA but no proteins
c. discover that human and mice chromosome chemistry differs greatly
d. isolate DNA and propose its structure
e. isolate and purify a cellular organelle
e
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Which of the following is not a char of all living organisms?
a. response to stimuli b. adaptation c. sexual reproduction d. regulation of internal environment e. acquisition of energy
A molecule that is phosphorylated
A) has an increased chemical reactivity; it is primed to do cellular work. B) has a decreased chemical reactivity; it is less likely to provide energy for cellular work. C) has been oxidized as a result of a redox reaction involving the gain of an inorganic phosphate. D) has been reduced as a result of a redox reaction involving the loss of an inorganic phosphate. E) has less energy than before its phosphorylation and therefore less energy for cellular work.
In annelids, ____ regulate the composition of body fluid.
Fill in the blank(s) with the appropriate word(s).
For the simple linear regression, Y = b + mX, which variable is considered the slope coefficient?
A. X B. m C. b D. Y