what does it mean
"isolated metabolic reactions in vitro are not living things but surely living reactions ."

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Solution

All living organisms are made up of chemicals. These chemicals can change into different biomolecules through various chemical reactions. The sum total of all chemical reactions occurring in the body of living organisms is known as metabolism. So, all the living organisms whether unicellular or multicellular exhibit metabolism. However, metabolic reactions can also be carried out outside the body in a cell free system. So, the metabolic reactions are living reactions since they are the characteristic feature of living organisms but isolated metabolic reactions carrying out in vitro represent the non-living things.

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Metabolism is a defining feature of all living organisms without exception. Isolated metabolic reactions in vitro are not living things but surely living reactions. Comment.

1. what do you mean "in vitro" ? specifically on sentences"Cell division occurs in certain tissues to replace lost cells.Unicellular organisms grow by cell division .One can easily observe this in IN VITRO cultures by simply counting the number of cells under microscope".

And on sentence "Metabolism is a defining feature of all living organisms without exception ,isolated metabolic reactions IN VITRO are not living things but surely living reactions."

Q. Assertion (A): Cellular organisation of the body is the defining feature of life forms.
Reason (R): Isolated metabolic reactions are living reactions.

Q. Given below are two statements in the form of assertion and reason.
Assertion (A): Cellular organisation of the body is the defining feature of life forms.
Reason (R): Isolated metabolic reactions are living reactions.
Select the appropriate option among the following.

Q. Assertion :Metabolism refers to the sum of chemical reactions that occur within living organisms. Reason: Metabolic reactions occur simultaneously inside living organisms.

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what does it mean "isolated metabolic reactions in vitro are not living things but surely living reactions ."

what does it mean
"isolated metabolic reactions in vitro are not living things but surely living reactions ."