Answer:
Ions are atoms with a positive or negative charge.
Explanation:
Ions are atoms or molecules that, when subjected to the phenomenon of ionization, gain or lose electrons, ceasing to be neutral and acquiring an electric charge.
The charge that atoms or molecules possess can be positive —if it has lost electrons— or negative when it acquires electrons. The negatively charged particle is called anion, and when it is positively charged cation.
The other options are not correct because of:
- <em>There are usually as many or more neutrons than protons.
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- <em>Uncharged atoms are neutral.
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- <em>The number of protons or neutrons does not affect the electric charge of the atom.</em>
- <em>Atoms that joined in fixed proportions can form molecules.</em>
The intake of food must be monitored to make sure that the cells in the body possess the essential nutrients to function. For example, one must consume the balanced diet, which is rich in carbohydrates, proteins, essential macro and micro-nutrients, fewer fats, and others.
The nutrition and diet are closely associated. The food consumed is digested and conducted to the different segments of the body as an important molecule, that is, in the form of glucose. Thus, the prediction of proteins and glucose in the cells of the body is the suitable procedure to monitor the substances needed for the cells to function.
<span>Random fertilization adds to the genetic variation thanks to B)Fusion of sperm and ovum, each having a unique combination of chromosomes, introduces further variation. Fertilization is a process of fusion of sperm and ovum. In a random fertilization, it is expected that sperm and ovum each have a unique combination of chromosomes. Thus, the created zygote will have a unique combination of chromosomes which introduces variation.</span>
