option-A if there is a change in the oxidation states of atoms from reactants to products, the reaction in an oxidation reduction reaction describes the oxidation-reduction .
We know that oxidation is a process that increases the oxidation number, whereas reduction is a process that decreases the oxidation number. An oxidation-reduction (redox) is a type of chemical reaction wherein the electrons are exchanged among distinct strains Any chain reaction that occurs when the oxidation number of the a molecule, atom, or ion modifications by acquiring or losing an electron is an oxidation-reduction reaction. Reduction-oxidation reaction any chemical reaction in which one species oxidizes (loses electrons) while another species reduces (gains electrons) Oxidized. defines an element that has lost electrons and increased its oxidation number
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the complete question is:
Which best describes oxidation-reduction reactions?
A- if there is a change in the oxidation states of atoms from reactants to products, the reaction in an oxidation reduction reaction
B-If there is formation of salt and water, the reaction is an oxidation-reduction reaction.
C-If there is formation of a precipitate, the reaction is an oxidation-reduction reaction.
D-If there is no change in the oxidation states of atoms from reactants to products, the reaction is an oxidation-reduction reaction.
Answer:
Living organism should obtain the 4 main types of macromolecules for maintaining proper body physiology.
Explanation:
The four major types of macromolecules that we should intake are Carbohydrate,protein,fat and nucleic. Each of them performs their specific functions.The 4 macromolecules are deeply interlinked to each other.
Deficiency of one of these four macromolecules can leads to various health hazards or health abnormalities.
For example if we do not intake carbohydrate then the lack of carbohydrate will weakens the body.The brain will not get sufficient amount of glucose to exhibit its biological function.
The protein deficiency leads to the development of marusmus a phusiological disorder occur due to protein energy malnutrition.
Answer:
A
Explanation:
only one type of atom= (PURE SUBSTANCE not mixture)
is atom chemically bonded to another atom? (NO- element, not compound)
