The perception of sound depends on
A) thermoreceptors.
B) photoreceptors.
C) chemoreceptors.
D) nociceptors.
E) mechanoreceptors.
E
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There is always concern that new strains of influenza virus will emerge; lack of resistance to a particularly virulent virus could result in a pandemic. Which statement best describes one mechanism by which a "new virus" could be created?
A. Viral RNA polymerase creates additional RNA genomic segments. B. One of the eight RNA segments of the influenza genome is eliminated from viral genome. C. Viral RNA polymerase creates an inaccurate cDNA copy from which RNA transcripts are synthesized. D. The RNA genome is inaccurately replicated by the viral RNA polymerase. E. The viral genome is inaccurately translated by host ribosomes.
Which of the following is NOT an example of parental investment?
A. A male fish holds fertilized eggs in his mouth until they hatch to protect them from predators B. A female mammal produces milk for her offspring C. A male praying mantis is eaten by a female during mating, and the proteins from his body are deposited into the eggs she produces after mating with him D. A female bird sits on a nest to incubate eggs E. A male fish guards a female after mating with her, preventing other males from mating with her F. all of these are examples of parental investment
What is a gene? How are genes involved in the evolutionary process?
What will be an ideal response?
Researchers can deliver genes into plants by using ____
a. PCR b. DNA sequencing c. electric or chemical shocks d. gel electrophoresis e. DNA segmentation