If you were able to walk into an opening cut into the center of a large redwood tree, when you exited from the middle of the trunk (stem) outward, you would cross, in order, _____
A) the annual rings, new xylem, vascular cambium, phloem, and bark
B) the secondary xylem, cork cambium, phloem, and periderm
C) the vascular cambium, oldest xylem, and newest xylem
D) the secondary xylem, secondary phloem, and vascular cambium
A
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Which of the following is least likely to be the result of a mutation in the promoter of a gene?
A. The level of expression of that gene increases. B. The level of expression of that gene decreases. C. The protein sequence of the gene product is altered. D. The level of expression of that gene remains the same.
Gastrulation produces ____.
A. hollow balls of cells B. embryos with three primary tissue layers C. solid balls of cells D. specific organs E. dead tissue
A patient who requires repeated dosing with strong analgesics over a period of more than a few days might be prescribed which of the following secondary plant metabolites?
A. Morphine B. Taxol C. Genistein D. Cyanogenic glycosides E. Quinine
The group of white blood cells that lacks visible granules in the cytoplasm is called ________. Included in this group are monocytes and lymphocytes
Fill in the blank(s) with correct word