What is the blood type of individuals who lack antigens on their red blood cell surfaces?  

A.  A, Rh+
B.  B, Rh+
C.  AB, Rh-
D.  O, Rh-.
E.  O, Rh+

D.  O, Rh-.

Biology & Microbiology

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Over time, the carbon isotope 14C decays into

a. 12C. b. 14N. c. 12N. d. 13C. e. 12B.

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Most of the energy required to form the peptide bonds during elongation comes from _____

a. ATP b. CTP c. GTP d. TTP e. whichever nucleotide is at the front of the codon

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Describe the main functions of the plasma membrane

What will be an ideal response?

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Which solute must be administered in high amounts because of its very efficient secretion and removal by the kidney tubules?

A. vitamin K B. HCO3- ions C. glucose D. penicillin E. amino acids

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