Which of the following is true of transcription in domain Archaea?
A. It involves promoters are identical to those in domain Eukarya.
B. There is only one kind of RNA polymerase.
C. It produces RNA transcripts that are processed after they leave the nucleus.
D. It terminates in a manner similar to that in bacteria.
E. It is regulated in the same way as in domain Bacteria.
Ans: B. There is only one kind of RNA polymerase.
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What characteristic would the R groups of amino acids have if they are located within the interior of biological membranes?
A. The R groups would be able to form ionic bonds. B. The R groups would be polar. C. The R groups would hydrophobic. D. The R groups would be hydrophilic. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about proteins in membranes? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following characteristics of protein degradation in eukaryotic cells is not true of protein degradation in bacterial cells?
A. Proteins with an Arg residue at their N-termini have short half-lives. B. Proteins are degraded by a large, barrel-shaped protease. C. Proteolysis is ATP dependent in regulated protein degradation. D. Protein degradation is directed by the covalent attachment of ubiquitin.
Decomposing organic material that releases nutrients into the soil is known as ____
a. clay b. humus c. silt d. hyphae
e. fungusRefer to the figure above. In their investigation of natural selection on Mc1r alleles (the gene that determines coat color) in Arizona pocket mice, Hoekstra et al. determined the frequency of the D and d alleles in each population
They also determined the frequency of alleles for two neutral mitochondrial DNA genes (genes that do not affect and are not linked to coat color). Why did the researchers include the mitochondrial DNA genes as part of their experimental design? A) Allele change for the neutral mitochondrial genes serves as an experimental group and gives information on any general background genetic difference among these populations. B) Allele change for the neutral mitochondrial genes serves as a control and determines coat-color differences among these populations. C) Allele change for the neutral mitochondrial genes serves as an experimental group and gives information on coat-color differences among these populations. D) Allele change for the neutral mitochondrial genes serves as a control and gives information on any general background genetic difference among these populations.