I believe the answer is receptor sites, but correct me if I'm wrong.
Hope this helps!
Correct answer: B). Food and fossil fuels
The energy can not be created nor destroyed but it can be transformed into another form. The ultimate source of energy on this planet is the sun, the sun provides sunlight where sunlight is converted into chemical energy, which is used by plants to prepare food. Then we consume food prepared by plants to get energy and perform various types of work like movement, reproduction, growth etc. In this, the chemical energy is converted into mechanical energy.
<h2>polysaccharides; that is, both molecules are made up of a lot of sugar molecules. </h2><h2>:3</h2><h2 />
The best option would be 'C'.
Answer:
Red Blood Cell
Explanation:
Red Blood Cells (RBCs) are round and without a nucleus. It has no nucleus so that it has more space to accommodate oxygen molecules and it helps in diffusion due to the biconcave shape, and that biconcave shape is present because there is no nucleus present in the RBC.
I hope this helps you!!