Which is incorrect about Yersinia pestis?
What will be an ideal response?
It produces enterotoxin.
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In a cell with a diploid number of 12, how many chromatids are present at prophase of mitosis?
A) 6 B) 12 C) 24 D) 48 E) none of the above
Why must an animal such as an amphibian remain moist?
What will be an ideal response?
Characteristics of headwaters include:a
fast flow, high oxygen, and free-floating vegetation. b. fast flow, low oxygen, and free-floating vegetation. c. fast flow, high oxygen, and streamlined animal bodies. d. fast flow, high oxygen, and free-floating vegetation. e. slow flow, high oxygen, and free-floating vegetation
Which of the following findings was essential for Edward Jenner's vaccination process?
A) Exposure to a milder disease form may produce immunity. B) A weakened microorganism will not cause disease. C) Someone who recovers from a disease will not acquire that disease again. D) Disease is caused by viruses. E) Pathogenic microorganisms infect all humans and animals in the same manner.