Which statement is LEAST characteristic of proteobacteria?
a. They live only inside plants.
b. Some are photoautotrophs.
c. Some are chemoautotrophs.
d. Some are chemoheterotrophs.
e. They are the most diverse group of bacteria.
ANSWER: a
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Indicate whether the statement is true or false
Which of the following clusters of terms applies when addressing enhancers as elements associated with eukaryotic genetic regulation?
A) trans- and cis-acting, variable position B) cis-acting, variable position, fixed orientation C) cis-acting, fixed position, fixed orientation D) trans-acting, fixed position, fixed orientation E) cis-acting, variable orientation, variable position
Which of the following excretory structures is used by birds?
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If the DNA sequence is G-C-C-T-A-T in one polynucleotide chain, then the sequence found in the other polynucleotide chain must be
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