Aerobic degradation (pumping air or hydrogen peroxide into the contaminated site) is also known as ________
A) bioprocessing
B) biostimulation
C) bioventing
D) composting
E) landfarming
C
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If a mutation rendered the signal recognition particle receptor nonfunctional, what would be the most obvious effect on the cell?
A. Translation of most proteins would be incomplete. B. All proteins normally secreted by the cell would remain partially formed and attached to the endoplasmic reticulum. C. Proteins destined for the nucleus would remain in the cytosol. D. No proteins would arrive at their proper destinations within the cell. E. All proteins normally secreted by the cell would remain in the cytosol.
The phospholipid molecules of most membranes
have a. a hydrophobic head and a hydrophilic tail. b. a hydrophobic head and a hydrophobic tail. c. a hydrophobic head and two hydrophobic tails. d. a hydrophilic head and two hydrophobic tails. e. none of these.
Methylated DNA sequences typically contain ____ genes
a. transcriptionally active b. transcriptionally inactive c. constitutive d. housekeeping e. alternatively spliced
A young scientist has discovered a new species of grub worm in the Amazon. He would like to explore the possibility that in this grub worm the codon CUC is the start codon and codes for methionine, not leucine as it does in other worms. To date, he has been unable to get his research funded, most likely because
A) worms have been extensively studied and their genomes are simple. B) worms do not contain homologous genes to humans. C) codons are generally the same in all worms. D) the genetic code is universal to all species. E) worms are difficult to maintain in the laboratory.