Essays on Transition State

Introduction

There are environmental chemical processes which require light to react. These processes are called photochemical reactions. Photochemical reaction is commonly initiated due to the absorption of solar energy or light. When molecules absorb energy in the form of light, the atoms are converted in a transient excited state (Larson & Weber, 1994). This transition state or excited has completely different physical and chemical properties with the initial state of the molecule. The excited states also have more tendencies to react since they are considered stronger acids and stronger reductants that the initial state of the molecule. The excited state of ...

Part A

How Enzymes Act As Protein Catalysts in Biochemical Processes Catalysis refers to the speeding up of a chemical reaction by a catalyst. A catalyst is a substance that accelerates a chemical reaction but does not undergo a permanent chemical change in the process. Enzymes are catalysts whose building blocks are amino acids: they are proteins. Enzymes also exhibit a defined three-dimensional structure. In addition, they have a cleft on their surface called active site. The active site is the region where substrate interactions take place. Enzymes play important roles in fructose metabolism. The first step of fructose metabolism in the liver is the phosphorylation of ...

Stars can be considered as the most attractive and the most recognized object that can be identified in the galaxy. They can be easily distinguished through their bright-colored and shiny appearance whenever we try to look at it at night. Basically, stars are born within the clouds of dust scattered in different locations in the Earth’s galaxy. Generally, the larger the star, the shorter its life is.

Describe what triggers a star leaving the main sequence:

The general theory why stars prefer to leave the main sequence is that when the Hydrogen fuel core is being consumed, energy is being released; permitting the radiant energy to pass ...