Studies have shown that in the flowering plant Arabidopsis the development of parts of a flower is governed by ____
a. differential uptake of hormone signals from the leaves
b. the oxygen gradient from outside to inside of the closed flower
c. differentiation of cell types as they are formed from the apical meristem
d. the timing of cell division
e. the expression patterns of several floral organ homeotic genes
ANSWER: e
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The type of RNA that carries protein-building information is called _____
a. ribosomal RNA b. transfer RNA c. messenger RNA d. reader RNA e. translator RNA
Identify the form of nonionizing radiation from the list below:
A) gamma rays B) X rays C) cathode rays D) ultraviolet rays
Which of the following is found in both archaeal and eukaryotic genomes?
A. chromatin fibers B. histones C. heterochromatin D. euchromatin E. nuclear envelope
During respiration, glucose is converted into pyruvate through ________, and pyruvate is oxidized into CO2 through ________
a. glycolysis / fermentation b. the citric acid cycle (CAC) / glycolysis c. glycolysis / the citric acid cycle (CAC) d. the citric acid cycle (CAC) / the glyoxylate cycle