What will occur when the translation machinery encounters a nonsense codon during protein synthesis?
a. A mutated protein will be produced.
b. The nonsense codon is ignored.
c. Protein synthesis will terminate.
d. The cell will begin apoptosis.
c. Protein synthesis will terminate.
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The differentiation of embryonic stem cells into neurons and glial cells is a consequence of which type of cell signaling?
A. juxtacrine B. paracrine C. autocrine D. endocrine E. All of these choices are correct.
Which of the following must exist in a population before natural selection can act upon that population?
A. variation among individuals in reproductive success B. genetic variation among individuals C. sexual reproduction D. Three of the responses are correct. E. Two of the responses are correct.
Which of the following are ways in which scientific names are derived? Select all that apply.A) Scientific names can be descriptive.B) Scientific names are often based on an organism's common name.C) Scientific names can include geographic descriptions.D) Scientific names can be derived from the name of a person.E) Scientific names can be based on mythical characters.
What will be an ideal response?
Limiting exposure to rodents and their waste is an important means of preventing
A) coccidioidomycosis. B) Hantavirus pulmonary syndrome. C) histoplasmosis. D) bronchiolitis. E) inhalational anthrax.