The name of the meristem that ultimately gives rise to secondary xylem and phloem is the
A. ground meristem.
B. vascular cambium.
C. intercalary meristems.
D. primary meristem.
E. cork cambium.
Answer: B
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The plots that were staked out on the island were part of the:
A. applied research. B. basic research. C. experimental design. D. constructed model.
Which one of the following statements about Chlamydia and Chlamydophila spp. is false?
A) They are obligate intracellular pathogens. B) They are considered to be “energy parasites.” C) The diseases they cause are all arthropodborne. D) They are considered to be Gram-negative bacteria.
Enzymes ____
a. control the speed of a reaction b. change shapes to facilitate certain reactions. c. may place physical stress on the bonds of the substrate. d. always work on their own. e. lower activation energy.
Acidic dyes
A) work best in low pH environments. B) are negatively charged. C) are used for staining negatively charged molecular structures. D) are lipid soluble. E) are negatively charged and work best at low pH.