The ribosome binding site in an mRNA transcript is located ____ and is where ____
a. at the start codon; the large ribosomal subunit binds to the mRNA-tRNA complex in prokaryotes
b. just upstream of the start codon; the large ribosomal subunit binds to mRNA in eukaryotes
c. at the start codon; the small ribosomal subunit binds to the mRNA-tRNA complex in eukaryotes
d. on aminoacyl-tRNA; the large ribosomal subunit binds to tRNA in prokaryotes
e. just upstream of the start codon; the small ribosomal subunit binds to mRNA in prokaryotes
ANSWER: e
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Which of the following are environmental factors that determine where an organism can live? (Check all that apply.)
_____ intraspecific competition _____ predation _____ prey availability _____ soil type _____ sunlight _____ temperature _____ water
Eutrophication of a lake most likely is the result of
A) an increase in oxygen content of the water. B) elevated nitrogen and oxygen gas levels in the water. C) an increase in atmospheric pressure associated with surface waters. D) competitive exclusion. E) excessive concentrations of organic and inorganic nutrients.
In trying to limit the growth of a pest, you will have more success if you can reduce the carrying capacity of the environment rather than reduce the population size of the pest.
Answer the following statement true (T) or false (F)
Which of the following is not a sign of sepsis?
A) rapid heart rate (more than 90 beats per minute) B) body temperature above 101°F (38.3°C) or below 96.8°F (36°C) C) increased respiratory rate (more than 20 breaths per minute) D) dilated pupils E) increased white blood cell count