During which period did the coal forests form?

a. Cambrian
b. Carboniferous
c. Quaternary
d. Jurassic
e. Ordovician


B

Biology & Microbiology

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The DNA of some archaeons is stabilized by association with archaeal histone proteins forming particles resembling eukaryotic nucleosomes.

Answer the following statement true (T) or false (F)

Biology & Microbiology

The Calvin cycle includes 15 enzymes, most of which are involved in __________

A. RuBP carboxylation B. RuBP regeneration C. reduction D. starch synthesis E. ATP synthesis

Biology & Microbiology

________ demonstrated that there were equivalent amounts of adenine and thymine and equivalent amounts of guanine and cytosine.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

In studying an E. coli strain containing a known frameshift mutation, you isolate a mutant in which this frameshift is suppressed. You therefore expect to find which of the following associated with the suppression? (Assume the frameshift has not been corrected in the coding for the peptide.)

A) suppressor tRNAs encode an amino acid for a stop signal B) suppressor tRNAs encode a four-nucleotide anticodon C) suppressor tRNAs encode a two-nucleotide anticodon D) both choices B and C E) all of the above

Biology & Microbiology