Ans.
ATP (adenosine triphosphate) is complex organic biomolecule that provides energy to all living organisms. ATP is produced by a chemical reaction, in which an inorganic phosphate molecule binds with ADP (adenosine diphosphate) molecule.
ATP is important to the cells as it is considered as energy currency of the cell, which is required for various functions, performed by a living cell, such as chemical synthesis of compounds, muscle contraction, and propagation of nerve impulses.
Gradient = difference in elevation/horizontal distance
Oxygen plays an important/ key role in both systems.
Answer;
A) Blood pressure decreases greatly; blood flow to the heart is inadequate, and blood pressure decreases.
Explanation;
-With negative feedback, the output reduces the original effect of the stimulus. While in a positive feedback system, the output enhances the original stimulus.
-Negative feedback is the most commonly used feedback loop in the body. Negative feedback is used to negate or counteract a stimulus without completely eradicating it.
-One key difference between the two feedback is that positive feedback loops are used to eradicate a stimulus. Another key difference is that responses through positive feedback become more amplified over time. So once a stimulus activates a positive feedback loop it is not turned off until the stimulus is completely removed.