The statements 'function as electron acceptors or donors in catalyzed reactions' and 'synthesized in the membranes and cytoplasm of plant cells' about vitamins are TRUE. They are micronutrients.
Vitamins are micronutrients (like minerals) that must be consumed in a healthy diet to carry out cellular processes.
Vitamins can sometimes also be synthesized by the body (for example, vitamin D can be synthesized).
The consumption of vitamins is fundamental to carrying out cellular activities such as cellular respiration.
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