Which of the following is true of an individual with blood type AB?
a) They have red blood cells with A antigens only.
b) They have red blood cells with A and B antigens.
c) They are classified as the "universal donor" and can donate blood to anyone.
d) They produce A and B antibodies.
e) They can receive blood from blood type O individuals only.
Ans: b) They have red blood cells with A and B antigens.
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Which of the following is the neurotransmitter responsible for triggering skeletal muscle movement?
a. epinephrine b. adrenaline c. acetylcholine d. serotonin
The modern, living plants in which pollen-producing organs and egg-producing organs are situated
very close together are the
a. gymnosperms. b. angiosperms. c. bryophytes. d. seedless vascular plants. e. seed plants.
A mutualism in which each species can live without the other is termed
A. an obligate mutualism. B. a facultative mutualism. C. a dispersive mutualism. D. a trophic mutualism. E. a defensive mutualism.
An interruption to the blood supply of the brain may cause a(n) ________
Fill in the blank(s) with correct word