Which of the following is NOT true about enzymes?
A. Very few enzymes require cofactors for activation.
B. Most enzymes are not sensitive to changes in pH.
C. As the temperature increases from 25°C to 37°C, enzyme activity decreases.
D. All of the choices are correct.
Answer: D
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Which of the following is considered to be the wind pipe?
a) alveolar duct b) bronchiole c) trachea d) esophagus
During the early steps of glycolysis, glucose is converted to glucose 6-P, and then glucose 6-P is converted directly to
A. isomerase. B. NADH. C. fructose 6-P. D. aldolase. E. pyruvate.
The control of respiration by centers in the brainstem can be over-ridden by higher brain centers when speaking, breath-holding, undergoing emotional reactions, and experiencing pain.
Answer the following statement true (T) or false (F)
The __________ secretes a hormone that increases the body's metabolic rate, promotes alertness, quickens reflexes, and stimulates the fetal nervous system.
A. thyroid gland B. pancreas C. adrenal gland D. parathyroid gland E. thymus