It is false that living organisms contain unique chemical elements which are not found in non-living systems.
Cytoplasm<span>, the rest of the material of the cell within the </span>plasma membrane<span>, excluding the nucleoid region or </span>nucleus<span>, that consists of a fluid portion called the cytosol and the organelles and other particulates suspended in it. Ribosomes, the organelles on which protein synthesis takes place.
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The capsid surrounds the virus and is composed of a finite number of protein subunits known as capsomeres, which usually associate with, or are found close to, the virion nucleic acid
A gateway substance is something that may be menial but could lead to something bigger, an example is weed in the drugs world, weed is not hard to get and is usually a gateway drug to stronger types of drugs and potentially more dangerous
<h3><u>Answer and Explanation</u>;</h3>
- Purines: Heterocyclic rings are synthesized one atom at a time, first atom attached to ribose phosphate (source is PRPP) and then all the other atoms are added .
- Pyrimidines: Common intermediate, orotate, synthesized first, then orotate is attached to ribose phosphate (source is PRPP or 5-Phosphoribosyl-1-pyrophosphate).
