A DNA similarity of 75% between two organisms
A. suggests the organisms are very closely related at the species level.
B. suggests the organisms are not related.
C. suggests the organisms may or may not be related.
D. means the GC content is 45%.
A
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Suppose an antibody to bindin and sea urchin sperm were mixed together and the mixture was added to eggs. You predict that the antibody-treated sperm will _____
A) fertilize the eggs normally B) fertilize eggs from other species C) not bind to the egg membrane D) not be able to swim toward the egg
Which of the following biochemical reactions identifies an organism associated with blood, bone, and joint infections in young children?
a. Positive catalase, positive nitrate reduc-tion, and positive indole b. Negative catalase, positive nitrate reduc-tion, and positive indole c. Negative catalase, negative nitrate reduc-tion, and positive indole d. Negative catalase, negative nitrate reduc-tion, and negative indole
Although poliovirus capsids contain several distinct proteins, these are synthesized as a single polypeptide then cleaved by proteases to produce the individual proteins.
Answer the following statement true (T) or false (F)
Most bacteria can reproduce very quickly, so their populations increase rapidly. Describe the evolutionary process that prevents most human-disease-causing bacterial parasites from causing the human population to become extinct
What will be an ideal response?