What is the substance in tea that binds iron, reducing the amount absorbed?
A. Caffeine
B. Ascorbic acid
C. Tannic acid
D. Folic acid
Answer: C
You might also like to view...
Which of the following hormones is NOT usually secreted at higher levels in response to stress?
A. Vasopressin B. Aldosterone C. Antidiuretic hormone (ADH) D. Gonadotropins E. Beta-endorphin
Sequence the following events involved in muscle cell contraction:
1 . Sodium channels open and sodium flows in. 2 . Impulse reaches the axon's terminal. 3 . ACh binds to receptors on the muscle cell membrane. 4 . Synaptic vesicles fuse with neuron's membrane and release ACh via exocytosis. 5 . If enough sodium moves in to the muscle cell, an impulse (action potential) develops. a. 1, 2, 3, 4, 5 b. 2, 1, 3, 4, 5 c. 2, 4, 3, 1, 5 d. 3, 4, 5, 1, 2 e. 3, 5, 2, 1, 4
The purpose of the fluid in the pleural cavity is to __________.
a. provide lubrication for diaphragmatic constriction b. allow for the exchange of electrolytes during respiratory movements c. reduce friction between the parietal and visceral pleura d. provide a medium for the exchange of O2 and CO2
There are two brachiocephalic veins and ________ brachiocephalic artery (or arteries)
A) no B) 1 C) 2