Oxidation reduction reactions ________.
A) utilize hydrogenases
B) may involve the loss of hydrogen and electrons
C) are rarely coupled together
D) occur via the gain of hydrogen or the loss of oxygen
B) may involve the loss of hydrogen and electrons
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Which of the following glands are not part of the endocrine system?
a. salivary gland b. pituitary gland c. thyroid gland d. hypothalamus
Vitamin B12 is poorly absorbed in the absence of
A) erythropoietin. B) intrinsic factor. C) extrinsic factor. D) folic acid
Which of the following hair colors is the result of a decrease in melanin?
A. Red B. White C. Brown D. Auburn E. Black
You receive a call to a residence for a 60-year-old man who is bleeding from his dialysis shunt. When you arrive, the patient's wife, who has been properly trained on the use of the dialysis machine, tells you that she panicked and called EMS. The dialysis cannula has loosened from the needle, which is still in the shunt. Your initial action should be to:
A) immediately clamp off the cannula and apply direct pressure. B) attempt to tighten the connection between the needle and cannula. C) remove the dialysis needle from the shunt and apply direct pressure. D) apply direct pressure over the shunt and carefully remove the needle.