<span>An organelle is a functional subunit enclosed by a membrane within a eukaryotic cell. The name "organelle" means little organ and the name comes from the analogy with organs: what an organ is to a body, an organelle is to a cell. So, the organelle is the organ of the cell. There are different types of organelles in cells, such as nucleus, mitochondria, Golgi apparatus, endoplasmic reticulum, chloroplasts, vacuoles, and they all have a different function. For example, the nucleus is the organelle which main function is control of cell activities. Mitochondria are organelles which main function is energy production. </span>
Carbohydrates are a source of quick energy (ex: sugars, starches) and are made up of monosaccharides, while proteins determine how your body looks and functions and are made up of amino acids.
No, I don't think we adequately account for the environmental impact in the cost that consumers pay for coal. <span>Consumers are paying much too low a price for coal-generated electricity, because the price they pay does not take account of the very large external costs associated with generation.</span>
DNA carries the instructions in for of genes.
