The best and most correct answer among the choices provided by your question is the second choice or letter B.
<span>Radioisotopes are used to preserve food because radioisotopes: can kill the bacteria, mold, insect eggs and yeast that cause food to spoil quickly.</span>
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Answer: By definition, if the atomic number =
7
, then there are 7 protons, 7 electrons, and 8 neutrons!
Explanation:
The atomic number is by definition the number of protons, positively charged particles, contained within the atomic nucleus. So if there are 7 protons, there MUST be 7 electrons, 7 negatively charged particles. Why? Because matter is electrically neutral, and positive and negative particles must be equal.
Electrons have negligible mass; the mass number depends on the number of protons contained within the nucleus, PLUS the number of neutrons. Given that we have 15 N
, there must be 8 neutrons contained within the nucleus. does this help?
<span>Like DNA, RNA polymers are make up of chains of nucleotides *. These nucleotides have three parts: 1) a five carbon ribose sugar, 2) a phosphate molecule and 3) one of four nitrogenous bases: adenine, guanine, cytosine or uracil.
i hope this helps if it does can i get brainliest answer</span>
What is true of chemical energy is that chemical energy can be stored more efficiently as glucose than it can be as ATP. All the other answers in this case don't really apply. The correct answer is therefore A.
When ATP is broken down to ADP we get a release of energy - B and C are therefore wrong. Energy is broken in more ways as only ADP - D is also wrong. Only A stays as the correct answer.
