The atomic number of the atom depicted in the figure is
a. 5.
b. 7.
c. 8.
d. 15.
e. 22.
B
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One of the major advantages of a continuous culture system is that the cells can be maintained in the exponential growth phase for extended periods of time.
Answer the following statement true (T) or false (F)
Ferns are more advanced than mosses because mosses lack which structure found in ferns?
a. spores b. cuticle c. xylem d. sporophytes e. flagellated sperm
In the Hardy-Weinberg equation, the term q2 refers
to the frequency of a. a recessive allele of a given locus. b. the homozygous recessive genotype at a given locus. c. recessive alleles in a population. d. heterozygotes in a population. e. alleles in the gene pool.
Which of the following describes the postembryonic development that members of the order Thysanura (silverfish) have instead of metamorphosis?
a. a single, wingless nymph instar followed by several winged adult instars b. a series of young instars that become more and more like an adult, ending with a wingless adult instar c. a series of nymph instars that lack functional wings, ending with an adult instar with functional wings d. several instars of often wormlike larvae, followed by a stage where they are a sessile pupa, and then ending in an adult stage that is very different from the larval stages