Which of the following vitamins is NOT correctly matched with its major function?
A. Folic acid - helps to make hemoglobin in red blood cells
B. Vitamin K - helps to form collagen
C. Vitamin A - helps in night vision
D. Vitamin D - helps absorb calcium from the small intestine
Answer: B
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As blood leaves the right atrium, it passes through the ________ valve to the right ventricle.
A. pulmonary semilunar B. mitral C. bicuspid D. tricuspid
The receptor potential _____
A) can be graded with stimulus intensity B) amplitude can vary with the stimulus intensity C) amplitude can vary with the stimulus intensity, requires the appropriate stimulus and can be graded with a stimulus intensity D) requires the appropriate stimulus
A biopsy is the removal of a sample of tissue to see whether cancer cells are present. If they are not present, then the biopsy is said to be__________.
Fill in the blank(s) with the appropriate word(s).
What taste sensation is elicited by the most chemically diverse group of tastants?
a. sweet b. salty c. bitter d. sour e. fatty