Structures in an organism that are reduced in size, complexity or strength compared to related
organisms and have no current function are called
a. homologous
b. vestigial
c. mutualistic
d. fossil
e. convergent
B
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The Shine-Dalgarno sequence in bacteria __________
A) is a purine-rich consensus sequence found in the 5? UTR of the mRNA B) is a pyrimidine-rich consensus sequence found in the 3? UTR of the mRNA C) is a purine-rich consensus sequence found in the 16S rRNA subunit D) is a region of the tRNA molecule involved in formation of charged tRNAs E) is a consensus sequence involved in the termination of translation
A normal cell is anchorage-dependent for growth and mortal
a. true b. false
Which class of hormones produced in the roots of plants promotes cell division and growth and retards the aging of flowers and leaves?
A) gibberellins B) phytochromes C) cytokinins D) ethylene
A fungus which produces sexual spores within a sac-like chamber in a fruiting body is a member of the
A) Ascomycota. B) Basidiomycota. C) Deuteromycetes. D) Zygomycota. E) Answer cannot be determined with this information.