What is the minimal number of tRNAs that can be used to recognize all of the codons for threonine?
A. 1
B. 2
C. 3
D. 4
B
Biology & Microbiology
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What are purines
What will be an ideal response?
Biology & Microbiology
Solutions that contain concentrations of H+ ions lower than pure water
a) have pH values below 7 b) are acids c) are bases d) are enzymes
Biology & Microbiology
How is most carbon dioxide transported in the blood?
A. on the free hemoglobins since they have lost their oxygen in the tissues B. as bicarbonate ions (HCO3) C. as carbon monoxide D. as carbon compounds and oxygen radicals E. as gas bubbles of CO2, just as in carbonated soft drinks
Biology & Microbiology
Each renal calyx
A. is a funnel-shaped structure. B. surrounds the tip of a renal pyramid. C. joins to form the renal pelvis. D. has all of these characteristics. E. has none of these characteristics.
Biology & Microbiology