The greatest mass extinction of all time occurred at the end of the ____ era, in which more than 90% of all existing
marine organisms became extinct.
a. Archaean
b. Paleozoic
c. Cenozoic
d. Mesozoic
e. Proterozoic
b
Biology & Microbiology
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Translation requires _____
A) mRNA, tRNA, DNA, and rRNA B) mRNA, DNA, and rRNA C) mRNA, tRNA, and rRNA D) mRNA, tRNA, and DNA
Biology & Microbiology
Which of the following Ralstonia spp. most often causes infections in cystic fibrosis patients?
a. Ralstonia gilardii b. Ralstonia insidiosa c. R. mannitolilytica d. R. pickettii
Biology & Microbiology
The energy that sustains life ultimately comes from sunlight
Indicate whether the statement is true or false
Biology & Microbiology
Which of the following coliforms is the most common cause of non-nosocomial urinary tract infections?
A) Escherichia coli B) Serratia marcescens C) Proteus mirabilis D) Klebsiella pneumoniae E) Enterobacter
Biology & Microbiology