Which of the following vectors would be the best choice for gene transfer in plant cells?
A) Cosmid
B) Bacterial artificial chromosome
C) Bacteriophage vector
D) Ti vector
E) Plasmid
D
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A basidiocarp is the ____ of a basidiomycete
a. feeding stage b. asexual sporangium c. reproductive body d. infecting vessel e. haploid life cycle stage
Plant tissues are more than 90 percent ____ by weight
a. carbohydrates b. water c. carbon d. nitrogen e. cellulose
Nodes of Ranvier are intervals between Schwann cells that the conduction of nerve impulses.
A. slow down B. have no effect on C. initiate D. speed up E. completely block
Which of the following is not a characteristic of parenchyma cells?
a. They all lack the ability to photosynthesize. b. They can differentiate into other kinds of cells in response to an injury to the plant. c. They may contain various storage materials, such as starch grains, oils, or water. d. They must be living cells in order to function. e. They may secrete substances of various types.