Answer:
The presence of cholesterol in the plasma membranes of some animal cells <u>enables the membranes to stay fluid when cell temperature drops</u>.
Explanation:
Cholesterol is an essential lipid in the basic structure of cell membranes. The membranes must have a fluid structure so that the proteins integrated in them can move ''horizontally'' to interact with their ligands and with other proteins. With excess saturated fat the membranes become rigid, but only with the necessary unsaturated fat the membranes are extremely fluid, and very sensitive to changes in temperature. Cholesterol stabilizes the structure of the membranes; preventing the collapse and crystallization between lipid chains that would lead to loss of fluidity and excessive rigidity in the membrane. By decreasing the temperature; as temperatures drop, fluidity decreases, an effect that partially counteracts the presence of cholesterol.
4 is nucleus because it’s in the middle
<span>Fossil
fuels represent carbon storage areas. Carbon that is locked in these
fossil fuels does not cycle through the Earth. When humans burn fossil
fuels, the stored carbon is released into the atmosphere as carbon
dioxide. The carbon is then free to cycle through the Earth and can
upset the natural balance of the carbon available, changing the way that
processes occur on Earth.</span>
The answer is: " 32,768 " .
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Explanation:
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→ 2ⁿ = ? ; {that is: "2" , raised to the "n th" power, equals {<u>what value</u>} ?
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→ Note that "n" is the haploid number, which is:
"15" (value given within this very question).
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→ So we plug in "15" for "n" ; to obtain the "final value" —
which is the answer.
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→ As such: " 2¹⁵ = 32,768 " . (using scientific calculator online).
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→ The answer is: " 32,768 " .
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Answer: Acid rain
The volcanic eruption is a natural phenomena that results in the liberation of the lava from the heap of the earth along with the gases. The volcanic eruption causes major damages to the vegetation lying above the erupted crater of the volcano. This results in the immense release of gases such as carbon dioxide, carbon monoxide, sulfur dioxide, hydrogen chloride, hydrogen fluoride, methane and ammonia all these gases are major pollutants of the air. These gases reacts with water vapor in the atmosphere and condense in the form of acid rain.