ATP fuels the primary active transport pump for Sodium and Potassium. The pump maintains a positive voltage on the exterior of the cell and negative on the interior.
The is should be C, Im not 100% sure though...
I think the most accepted Theory to make up living things is the cell theory.
Alfred Marshal was one of the most influential economists of his time and the author of the Principles of Economics book which was the principal economic textbook in England for long years. During his economic theory development, he borrowed a concept from the marginalists which is the theory of demand and the collective result of buyers who yearns services and products or the concept of scarcity.
In plants, the chloroplast is necessary to photosynthesis, and mitochondria contain enzymes responsible for producing energy
