Which one of the following is not a component of an amino acid?
A. an alpha carbon
B. an amino group
C. a carboxyl group
D. an R group
E. a phosphate group
Answer: E
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Which of the following are examples of convergent evolution in plants? Select all correct choices
A. the vascular cambia of gymnosperms and angiosperms B. the vascular cambia of quillworts (Isoetes) and angiosperms C. water transport in ferns and some bryophytes D. the leaves of lycophytes and gymnosperms E. pollen in angiosperms and gymnosperms
The skin-invading molds belong to the genera
A. Epidermophyton. B. Microsporum. C. Trichophyton. D. Ixodes. E. Epidermophyton, Microsporum, AND Trichophyton.
Which process explains the evolution of mitochondria and chloroplasts in eukaryotes?
a. Endosymbiosis b. Transformation c. Conjugation d. Transduction
Vertebrates have four Hox gene clusters that control the anterior-posterior axis. Indicate whether the statement is true or false