Parathyroid hormone (PTH) increases the
a. breakdown of bone.
b. reabsorption of calcium.
c. production of an enzyme that activates
vitamin D.
d. indirectly, helps intestines take up calcium
from food.
e. activities of all of these
E
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Secondary metabolites are organic compounds produced outside of primary metabolic processes essential for cell structure and growth. Based on this information, which of the following is an example of a secondary metabolite?
A. glucose. B. lipids. C. proteins. D. RNA. E. steroids.
Which of the following statements about Reye syndrome is FALSE?
A) It is associated with aspirin use. B) It is a complication that may occur in chickenpox infection. C) It mostly affects older adults. D) Symptoms may include vomiting, drowsiness, or behavior changes. E) Prolonged neurological problems may occur.
Which structure produces immune cells and is part of the lymphatic system?
What will be an ideal response?
In eukaryotes, most proteins contain short stretches of amino acid sequences called sorting signals that direct the protein to the correct cellular location.
Answer the following statement true (T) or false (F)