Which of the following is the binding site for
RNA polymerase on the DNA molecule?
a. structural gene 1
b. repressor gene
c. promoter sequence
d. operator sequence
e. region between an operator and the first
structural gene
C
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A thin, crescent-shaped organism with a single flagellum originating from a basal body and which folds back laterally across the cell would most likely be a member of the genus
A) Trypanosoma. B) Glossina. C) Entamoeba. D) Gambiense.
The medium or media of choice used to recover Legionella is:
a. buffered charcoal yeast extract (BCYE). b. Regan-Lowe agar. c. Löwenstein-Jensen medium. d. blood and chocolate agars.
Pharyngeal arches will become all of the following EXCEPT
a. the face. b. the neck. c. the mouth. d. structures associated with the head region. e. lower stomach.
You are excited because your lab is studying the first microorganisms retrieved from Mars! Interestingly, their genetic material consists of a single-stranded nucleic acid with six different nitrogenous bases. Like organisms from Earth, segments of the nucleic acid contain the code for making proteins. If the genetic code in these organisms was read in groups of 2 bases instead of 3, what is the maximum number of amino acids that could be coded for assuming that only one codon functioned as a stop codon? (Enter your answer as a numeral not a word, e.g. enter 17 not seventeen.)
Fill in the blank(s) with the appropriate word(s).