Overall, the most common blood type is
A) A.
B) B.
C) AB.
D) O.
E) There is no common pattern of blood type distribution.
Answer: D
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The normal amount of air exchanged during respiration is _____________________________
Fill in the blank(s) with correct word
Which T cell toxin fragments DNA?
a) Perforin
b) Tumor antigen
c) Interferons
d) Lymphotoxin
e) Toxin T
If cardiac muscle cells are unable to repolarize, this would cause
A. cardiac output to increase. B. no harm. These cells can spontaneously depolarize anyway. C. the heart rate to decrease. It might cause cardiac arrest. D. an increased demand on mitochondria to produce more ATP. E. tachycardia.
Blockage of the ileocecal valve would prevent
A. pancreatic juice from entering the duodenum. B. bile from entering the duodenum. C. lymph from entering the jejunum. D. chyme from entering the ileum. E. chyme from entering the large intestine.