Bone is considered an important storage reservoir for
A. calcium, phosphate, and lipids.
B. steroids, proteins, and complex carbohydrates.
C. glycogen, nitrogenous bases, and calcium.
D. phosphate, glycogen, and nonpolar amino acids.
E. calcium, complex carbohydrates, and polar amino acids.
A
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Answer the following statements true (T) or false (F)
1. Steroid hormone receptors are in the nucleus of the cell. 2. Steroid hormones do not need a second messenger because they are able to pass through the cell membrane. 3. A cell with an abnormally low number of ribosomes would slow down the effect of a steroid hormone. 4. TSH causes an increase in thyroid hormones when their blood level is too low. This is an example of a positive feedback mechanism. 5. Most hormones use a negative feedback system for regulation.
Match the following:
A) Parathyroid B) Thyroid C) Hypophysis D) Pancreas E) Adrenal medulla 1) The size and shape of a pea; produces hormones that stimulate other endocrine glands. 2) The gland that controls the fight-or-flight reaction. 3) Produces hormones that regulate glucose levels in the body. 4) Produces a hormone that controls blood levels of calcium and potassium by their removal from bone tissue. 5) Produces the body's major metabolic hormones.
Phagocytes can destroy foreign microbes only after they have engulfed these invaders
Indicate whether the statement is true or false
What happens to the blood's pH as blood CO2 levels fall?
A) pH becomes more acidic. B) Bicarbonate ions absorb the hydrogen ions. C) pH increases. D) pH decreases.