Answer:
a. polarized
Explanation:
The whole living cell and in particular the nerve cells show electric potential difference between the inner and outer faces of their cell membrane.
The resting potential of a cell refers to the difference in electrical potential that the inner and outer faces in the membrane of a neuron that is not transmitting nerve impulses. The resting potential value is around -70mV (milliVolts). The negative sign indicates that the interior of the cell is negative relative to the exterior.
The existence of the resting potential is mainly due to the difference in concentration of sodium (Na +) and potassium (K +) ions inside and outside the cell. This difference is maintained by a mechanism of active ion pumping through cell membranes, in which sodium is forced out of the cell and potassium in.
At rest, the alternation between passive and active ion transport occurs. There is passive input of sodium (Na +) ions, which are subsequently actively expelled, while potassium (K +) ions enter actively. Then K + passes passively from the cell, making the external medium positive relative to the internal medium. With this, the cell becomes polarized.
The correct answer is: 5) NER recognizes helix distortions, while BER recognizes specific base damage.
DNA damage that occurs as a result of radiation, oxidizing reagents, chemicals and other mutagens can be repaired. Excision repair repairs single strand DNA damage and it includes:
• Nucleotide excision repair (NER)-it detects and repairs types of damage that distort the DNA double helix such as those of UV radiation (thymine dimers); not only the damaged nucleotide(s) are removed but also a surrounding patch of DNA
• Base excision repair (BER)-it detects and removes certain types of damaged bases (small, non-helix-distorting bases); enzyme glycosylase is responsible for this type of repair
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Answer:</h2>
The <u>structure and function</u> are affected by the amino acids order in a protein.
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Explanation:</h2>
The succession of a protein is controlled by the DNA of the genes that encode the protein. An adjustment in the gene's DNA arrangement may prompt an adjustment in the amino acid grouping of the protein. In any event, changing only one amino acid in a protein's grouping can influence the protein's general structure and capacity.
For example, a solitary amino acid change is related to sickle cell frailty, an acquired infection that influences red platelets. In sickle cell frailty, one of the polypeptide ties makes hemoglobin, the protein that conveys oxygen in the blood has a slight succession change. The glutamic acid that is regularly the 6th amino acid of the hemoglobin β chain is supplanted by a valine.
Caffeine since it's an ingredient that boosts you're body in energy.
