A scientist is trying to elucidate why a certain group of eukaryotic cells died by comparing their proteins to the proteins of similar living cells. Protein sequences show multiple stretches of incorrect amino acid sequences embedded within the polypeptide chain, which are absent in the proteins of the living cells. Which of the following describes a plausible reason for their presence?

A. The DNA primers are absent.
B. The P site in the ribosomes was damaged.
C. The start codons were missing.
D. The genetic code in these cells has been scrambled.
E. The introns of the mRNA were never removed.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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