The secondary stage of syphilis
A. is a time when the pathogen enters and multiplies in the blood.
B. is when gummas develop in tissues.
C. is when the patient is no longer infectious to others.
D. occurs within 10 days of the primary stage.
E. has no symptoms.
Answer: A
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The extrachromosomal DNA found in bacteria are called:
A. vectors. B. plasmids. C. telomeres. D. restriction enzymes.
Which of the following applies to organisms, particularly plants and fungi, that have distinct haploid and diploid phases of their life cycles?
A) polyploidy B) aneuploidy C) alternation of generations D) asexual propagation E) regeneration
Someone who has broken an arm and has had a cast on it for months will notice a distinct shrinking of the arm once the cast is removed. Why does this happen?
A) Muscles that are not used will atrophy. B) The cast has reduced blood flow to the muscle tissue to reduce swelling. C) If the person was right-handed, he or she will become left-handed. D) The other arm was used more to compensate for the unused one, and it has become stronger.
Although similar in function, the eukaryotic ribosome is generally smaller and more complex than bacterial and archaeal ribosomes.
Answer the following statement true (T) or false (F)