"Explain the process of how the human circulatory system delivers blood that is rich with oxygen to all parts of the body and then returns the blood to the lungs and completes this cycle over and over" "List 5 senses and how does the nervous system including the brain and spinal cord play a part in the process of each of these 5 senses."

"Please compare and contrast the difference between photosynthesis and cellular respiration. Please include glucose, water, oxygen, carbon dioxide and the sun"

The circulatory system of our body complies with the gas exchange in the pulmonary alveoli, there the oxygen enters and binds to a protein which oxidizes it, this protein is allosteric, and it is called hemoglobin, this hemoglobin travels the human body capturing every need punctual of each organ, some organs will demand more or less oxygen according to the metabolic state of the human system.

Once oxygen is in front of an organ with few partial pressures of oxygen, it is released from the hemoglobin and this protein changes its conformation and then re-oxidizes when passing through the pulmonary alveoli.

It is important to clarify that hemoglobin is found in red blood cells, and these in the blood where they are pumped and distributed by the cardiovascular system.

Sense of taste, smell, touch, hearing and sight.

In the spinal cord, it is related more than anything those touch receptors in charge of executing reflexes against injuries or harmful conditions, such as touch receptors that are in charge of measuring temperature and measuring the limb's withdrawal response to excessive heat or burn .

As for the central nervous system and the cortex, they are responsible for managing the signals sent by sensory neurons, associating them with feelings, memories and experiences, such as taste and smell.

Photosynthesis is a process where energy currency for plants is obtained as a product, it requires ultraviolet light and carbon dioxide as products, where plant chlorophyll intervenes and oxygen is released to generate food autonomy for plants.

On the other hand, the respiratory chain is a process where proteins are oxidized sequentially to allow the gas exchange of those living organisms.

Explanation:

Explanations one and three are related because they both explain breathing methods in plants and animals such as humans, while in question two the human nervous system is related to the perception of the environment through the senses.