Answer all questions Explain the difference between exergoni

Answer all questions

Explain the difference between exergonic and endergonic reactions and give an example of each.

Describe the effect of each of the following on the rate of reaction without enzyme: temperature

Identify the monomers and polymers.

Compare and contrast general molecular structure.

Discuss physiological and structural roles in the human body.

Solution

Explain the difference between exergonic and endergonic reactions and give an example of each.
Exergonic reactions: An exergonic reaction refers to a reaction where energy is released. Because the reactants lose energy (G decreases), Gibbs free energy (G) is negative under constant temperature and pressure. Eg. Respiration

Endergonic reactions: an endergonic reaction refers to a reaction where energy is absorbed. It is a chemical reaction in which the standard change in free energy is positive. Eg. Photosynthesis

Describe the effect of each of the following on the rate of reaction without enzyme: temperature
The rate of an enzyme-catalyzed reaction increases as the temperature is raised. A 10 degree Centigrade rise in temperature will increase the activity of most enzymes by 50 to 100%. Variations in reaction temperature as small as 1 or 2 degrees may introduce changes of 10 to 20% in the results. In the case of enzymatic reactions, this is complicated by the fact that many enzymes are adversely affected by high temperatures.

Identify the monomers and polymers.
Monomer : a molecule that can be bonded to other identical molecules to form a polymer.
Eg: Glucose in glycogen, Aminoacid in Proteins...etc

Polymers: a substance which has a molecular structure built up from a large number of similar units bonded together.