A course designed to Post graduates in Biochemistry(CCSS) offered by Department of Life Sciences university of Calicut, who are having an under graduate experience in Biochemistry and intermediary metabolism.

Overview of metabolism

Cells are constantly carrying out thousands of chemical reactions needed to keep the cell, and your body as a whole, alive and healthy. These chemical reactions are often linked together in chains, or pathways. All of the chemical reactions that take place inside of a cell or an organism are collectively called the metabolism.
To get a sense of the complexity of metabolism, let's take a look at the metabolic diagram below. To me, this mess of lines looks like a map of a very large subway system, or possibly a fancy circuit board. In fact, it's a diagram of the core metabolic pathways in a eukaryotic cell, such as the cells that make up the human body. Each line is a reaction, and each circle is a reactant or product.
Abstract diagram representing core eukaryotic metabolic networks. The main point of the diagram is to indicate that metabolism is complex and highly interconnected, with many different pathways that feed into one another.
Image credit: "Metabolism diagram," by Zlir'a (public domain).
In the metabolic web of the cell, some of the chemical reactions release energy and can happen spontaneously (without energy input). However, others need added energy in order to take place. Just as you must continually eat food to replace what your body uses, so cells need a continual inflow of energy to power their energy-requiring chemical reactions. In fact, the food you eat is the source of the energy used by your cells!
To make the idea of metabolism more concrete, let's look at how  metabolic processes that are crucial to life on earth: those that build sugars, proteins, Lipids Nucleic acids and those that break them down, and how these processes are regulated  in an orderly fashion.

The course includes the topics:

Animal physiology

Plant physiology

Animal Developmental Biology

Plant Developmental Biology