The MMR (measles, mumps, rubella) vaccine requires multiple immunizations in the first year because it is composed of whole killed viruses.
Answer the following statement true (T) or false (F)
False
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If DNA repair mechanisms were perfect, which of the following would most likely result?
A. We would live forever. B. Evolution as we know it would stop because mutations are the only agent that gives us new genetic variation. C. The rate of evolutionary change would dramatically increase. D. Humans would stop aging, as aging is a collection of DNA mutations. E. All of the answer options are correct.
The nucleus of an atom contains ____
a. protons only b. electrons only c. neutrons only d. protons and neutrons e. protons and electrons
Gymnosperms are characterized by producing "naked seeds." Which of the following groups is NOT classified as a gymnosperm?
A. ginkgoes B. horsetails C. cycads D. conifers E. gnetophytes
A flower that lacks any one of its floral parts might be called
A. fatally flawed. B. incomplete. C. mostly complete. D. misrepresented. E. misinterpreted.