A person with blood group A has both A and B type antibodies. Indicate whether the statement is true or false
F
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An individual who is attracted to light is exhibiting
(a) negative phototaxis. (b) positive phototaxis. (c) negative thigmotaxis. (d) positive thigmotaxis.
Which of the following is not true of the translocation step of translational elongation in bacteria?
A. The deacylated tRNA is moved from the P site to the E site. B. EF-G binds to the A site, mimicking a EF-Tu-aminoacyl-tRNA complex. C. EF-G hydrolyzes GTP. D. The peptidyl-tRNA moves from the P site to the A site.
The advantage of avian respiration over mammalian respiration is that _______________
a. there is a one way flow of air b. they have spiracles to control airflow c. they have air sacs that allow them to store oxygen d. they do not need to ventilate their lungs
Veins from the ____ join together and form the hepatic portal vein
a. large intestine b. liver c. pancreas d. small intestine e. stomach