Water that moves through nonliving regions of root, such as air spaces in root tissue, is following the
a. symplastic pathway.
b. transmembrane and symplastic pathways.
c. transmembrane pathway.
d. apoplastic, transmembrane, and symplastic pathways.
e. apoplastic pathway.
E
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Where are the ribosomal subunits assembled in eukaryotes?
A. Nucleus B. Nucleoid C. Nucleolus D. Nuclear envelope
In DNA profiles, the pattern of bands is _____
a. due to variations in restriction enzyme recognition sites in plasmid DNA b. identical in all individuals c. due to variations in STR alleles between individuals d. due to the presence of transgenes e. possible only when copious quantities of DNA are available
An instrument that measures lung volumes is a
a. caliper. b. spirometer. c. barometer. d. stethoscope.
Aneuploidies describe:a
a phenomenon that only occurs in plants. b. a condition in which an extra chromosome is present or one is absent. c. a defect that is always fatal in humans. d. an uncommon condition in humans. e. mutations that almost always have a beneficial effect on an individual.