B.An advertisement for acne medication claims it can clear up acne in less than one week.
False, changes in genes due to mutations can be beneficial. (An example would be polar bears. They had a genetic mutation that gave them their white fur. Therefore, they blended in with snow easier, ate more food, survived longer, and passed down their genetics, while those without the mutation died out.)
Answer:
Plant-like protists produce almost one-half of the oxygen on the planet through photosynthesis. Other protists decompose and recycle nutrients that humans need to live. For example, medicines made from protists are used in treatment of high blood pressure, digestion problems, ulcers, and arthritis. Fungi are very important ecologically, because they are one of the most important decomposers in most ecosystems. They help to break down plant fibers such as dead leaves and wood and allow the nutrients to be released into the soil. Fungi are useful to humans because they have economic value.
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Explanation:
The sodium concentration is higher outside the cell than
inside the cell and the potassium concentration is higher inside the cell than
outside the cell.
Because the sodium-potassium exchange pump moves sodium and
potassium ions in opposite directions, the pump generates concentration
gradients for these ions that are opposite in direction.
