Answer:
other guy is wrong its sensory organ
Explanation
Answer: <u>Option 4; Oxygen gains electrons and hydrogen to form water.
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Respiration is a process where glucose is used and energy is released stored in this molecule. Oxygen is used during respiration as well and it gains the electrons and hydrogen to form water. And, gain of electrons is an oxidation reaction. So answer is option 4.
Since, oxygen is consumed during respiration, option 1 is incorrect.
Loss of electrons is reduction, so option 2 is also incorrect.
Glucose is used in respiration, thus option 3 is incorrect.
Elements cannot be broken down to similar substances.
Hope this Helps! (:
If you don't ingest enough amino acids you would have difficulties
synthesizing protein. Basically, there are 20 of them in the genetic
code and they build into everything because they are combined into
proteins. They are the second most found molecule in our body after
water, and you need a lot of them. If you don't get them your body won't
have enough protein and you can die if it becomes too extreme.