False
A single-celled organism doesn't need a circulatory system as human do. Since they are singular, they can interact with their environment directly. Unlike them, a multicellular organism like a human has a part where their cells can't get oxygen or food directly, thus need to be supplied by the circulatory system. Some of the cells also well differentiated so it only accept a certain processed food.
Like many other polymerization reactions, protein synthesis contains three phases: initiation, polymerization, and termination. Initiation of a protein synthesis is a complex process.
The end product of glycolysis 2 Pyruvate 2 NADH and 2 ATP.
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