Hypotheses explaining the development of autoimmune disease include
A. molecular mimicry.
B. genetic factors.
C. overuse of vaccines.
D. genetic factors and vaccines.
E. molecular mimicry and genetic factors.
Answer: E
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Soredia are:
A. sexual reproductive bodies of lichens B. asexual spores of mushrooms C. mycelia of crustose lichens D. identical with conidia E. clumps of hyphae and algae that disperse lichens
Which of the following enzymes converts chemical bond energy to light energy in bioluminescent organisms?
a. oxyluciferin b. luciferase c. pepsin d. luciferin
Gluten-free food options are becoming more and more common place due to the increased incidence and awareness of celiac disease in the US population. If a person with this disease eats foods containing gluten, the immune system responds by attacking and damaging or destroying his/her own villi. What digestive symptom would NOT be consistent with greatly-reduced numbers of villi?
A. abdominal bloating and pain B. chronic diarrhea C. weight loss D. peptic ulcer E. fatty stools Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about the function of villi? What other information is related to the question? Choose Answer · Given what you now know, what information 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?
How many covalent bonds can an individual carbon atom form?
a. 1 b. 2 c. 4 d. 8