Which statement is an example of a feedback mechanism in humans 1.) increase in the level of blood sugar results in the pancreas increasing the amount of insulin it secretes

2.) increase exposure to pathogenic bacteria result in an increase in the number of red blood cells produced

3.) an increase in exercise results in a decrease in the rate of respiration

4.) increased muscle activity results in a decrease in heart rate

1.

Explanation:

Controlling the level of sugar in the blood is an example of a feedback mechanism

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.