DNA studies can be used to suggest genetic relatedness because
A. it is assumed that all members of the same species have the same DNA.
B. DNA is easily preserved in fossils.
C. mutations are rarely seen in DNA studies.
D. it is assumed that recently diverged organisms would have similar DNA.
D. it is assumed that recently diverged organisms would have similar DNA.
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Protein X contains four transmembrane domains, a short N-terminus and a long C-terminus. Following protein synthesis, the N-terminus of the protein faces the lumen (the inside) of the ER. After protein X is transported to the cell surface via exocytosis, you would expect the N-terminus of protein X to be
A. extracellular. B. cytoplasmic. C. in the lumen. D. in the lipid bilayer of the plasma membrane. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about how proteins are oriented in a membrane? What other information is related to the question? 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?
Interference competition and exploitative competition are both examples of ____
a. coevolution b. mimicry c. interspecific competition d. intraspecific competition e. parasitism
What is the most challenging issue facing genome sequencing?
a. the inability to develop fast and accurate sequencing techniques b. the ethics of using information from genomes at the individual level c. the availability and stability of DNA d. the use of recombinant DNA technology by drug manufacturers
The PCR technique requires a DNA polymerase from an organism that can endure high heat, such as Thermus aquaticus. What step of the protocol makes the heat-stability most necessary?
A. Synthesis B. Denaturation C. Primer annealing D. Antibody binding