A hormone with an effect that lasts for days would have a
A. long half-life.
B. no half-life.
C. whole life.
D. short half-life.
Answer: A
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A person is experiencing severe heartburn. To compensate for their pain, they take 9 sodium bicarbonate-based antacids, which is more than triple the recommended dosage. Which of the following is NOT a way the body can compensate to react to the pH-related condition this overdose will produce?
A. Dihydrogen phosphate in the extracellular environments will dissociate to release H+ ions. B. The respiratory centers will cause an increased breathing rate and depth to release CO2. C. The kidneys reabsorb hydrogen ions and decrease their secretion into the urine. D. In the blood, amino acid chains of structures like hemoglobin will release H+ ions from -COOH and -NH3+ groups.
A timeline containing substances someone ingests or becomes exposed to can be found in the ________.
A. hair B. bones C. teeth D. eyes
The oral cavity is a part of which body system?
A) digestive B) nervous C) urinary D) respiratory
Which of these animals has an open circulatory system?
a. lobster b. shark c. sea anenome d. sponge e. nematode