A surprising finding of environmental metagenomic studies is that a majority of genes in the environment are
A) from microbes grown in the lab.
B) viral in origin.
C) eukaryotic in origin.
D) from extinct microorganisms.
Answer: B
You might also like to view...
Bacteria from the genus Caulobacter are used to model cellular differentiation in eukaryotes. The abundance of CtrA, DnaA, and GcrA separately control activity of other genes necessary for differentiation in Caulobacter
Thus, these three proteins can be classified as A) activating sensors. B) heterologous regulators. C) differentiating regulons. D) transcriptional regulators.
A person who is infected with a potential pathogen fails to develop signs or symptoms of disease. This correlates with ________ initial microbial dose, ________ microbial lethality, and/or ________ replication rate of the pathogen.
A. low; high; low B. low; low; high C. high; low; high D. high; low; low
Based on the evolutionary tree, which letter represents the common ancestor of all
eukaryotes?
a. A b. B c. C d. D
During translation elongation, which event happens last?
A. A tRNA molecule translocates from the P site to the E site. B. A tRNA carrying an amino acid binds to the A site. C. A tRNA molecule translocates from the A site to the P site. D. A peptide bond forms.