Collagen, a helical protein, became straight and flat as the temperature of its environment was changed. Its primary structure was not altered. What happened to cause it to flatten?
A. Hydrogen bonds were broken.
B. Peptide bonds were broken.
C. Bonds between carbon and oxygen were broken.
D. Peptide bonds were formed.
Answer: A
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A. the transfer of antibodies from another individual. B. direct encounter with the antigen. C. that an active virus be used in a vaccine. D. that all immune responses to the pathogen result in symptoms of illness.
Which of the following is an accurate statement regarding multiple organ dysfunction system?
a. It has a mortality rate of 5% to 50% b. It involves four or more organ systems c. It is an uncommon cause of death in the ICU setting d. It is often caused by sepsis
The presence of ferromagnetic objects in the body or in the MRI scanning room can pose a safety hazard for those having an MRI.
Answer the following statement true (T) or false (F)
In diabetes insipidus, blood levels of ________ are decreased causing an increase in ________.
A) aldosterone : potassium in the urine B) aldosterone : sodium in the urine C) ADH : plasma volume D) ADH : urine volume E) insulin : glucose in the urine