The form of hemoglobin with iron in an oxidized state is ________.
A. carboxyhemoglobin
B. methemoglobin
C. oxyhemoglobin
D. deoxyhemoglobin
Answer: B
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There are five basic taste sensations. Select the one mismatched with its causative agent.
A. Salty; metal ions such as potassium or sodium B. Umami; amino acids such as glutamate or aspartate found in chicken soup C. Bitter; acids such as those in toxins or poisons D. Sour; hydrogen ions from acids such as those in lemons E. Sweet; organic compounds such as sugar
The superior cerebellar peduncles connect the pons to the cerebellum.
Answer the following statement true (T) or false (F)
Which of the following is the most plentiful buffer in the tubular fluid of the kidney collecting duct?
a) Bicarbonate ion b) Monohydrogen phosphate ion c) Ammonium ion d) Dihydrogen phosphate ion e) None of these
Which of the following is not true of hemoglobin?
A. It makes up about 1/3 of a red blood cell. B. Each hemoglobin molecule consists of 4 protein subunits. C. Each hemoglobin molecule can bind to up to 20 oxygen molecules at a time. D. Oxyhemoglobin is bright red, and deoxyhemoglobin is dark red. E. All of these are true of hemoglobin.