Because all organisms are made up of cells and there are different types of cells which carry different functions.
Answer: Option "D".
Explanation: During exercise muscle cells release irisin protein is being released causing Beige adipocyte formation.
the secretion of Irisin leads to the improvement in muscle activity, bone mineral density, increasing the formation of brown like Beige adipocytes in the tissue.
Adipocytes are divided into two tissues namely white and brown. white tissues generally expand during excessive nutrition and brown adipocytes have mitochondria and burn the energy during exercises resulting into the break down of ATP molecules increasing the body heat.
Therefore, during exercise heat generated due to the formation of brown adipocyte tissue which are formed due to the release of irisin protein.
He is credited with the discovery of Nucleic Acids.
<span>D. Gravity is the force of attraction between two objects and is dependent upon the mass of the objects and the distance between the objects.</span>
