How many different bases are found in the DNA strand?
a. 1
b. 2
c. 3
d. 5
e. 4
e
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Recall that C4 plants tend to have higher rates of photosynthesis compared to C3 plants (under normal 21% O2 atmospheric conditions). If photosynthetic rates are higher, why aren't all plants C4 plants?
A. Because of the need to regenerate PEP, C4 photosynthesis utilizes more energy vs. C3 photosynthesis. B. Because of rubisco, C4 photosynthesis utilizes more O2 vs. C3 photosynthesis. C. Because of mesophyll cells, C4 photosynthesis requires more chlorophyll. D. Because of leaf veins, C4 photosynthesis requires more H2O.
Where do axons of olfactory receptors synapse with interneurons?
a. olfactory bulb b. ganglia c. spinal cord d. nasal cavity e. peripheral nerve
Human traits are controlled only by the genetic material found in the 46 chromosomes
a. True b. False
Hydrogen peroxide is an effective
A) sterilizing agent. B) disinfectant. C) antiseptic. D) disinfecting and sterilizing agent. E) antiseptic and disinfectant.