CELL DIVISION
abidaTHE CELL CYCLE The period from the time a cell is produced until it completes mitosis is called cell cycle. Cell division occurs during growth and repair processes. Cell cycle…
OBJECTIVES Of Harvest Energy Stored In Nutrients
Multiple Choice Questions MCQs: Four options are given at the end of each statement. You should encircle.one option from them. The first step of respiration is: (a) ETC (b) Krebs…
MODEL SUBJECTIVE QUESTION
Describe the process of glycolysis. Discuss evolutionary perspective of glycolysis. Write note on fermentation. Discuss different steps of Krebs cycle. Draw Krebs cycle. Describe different steps of electron transport chain.…
DEFINITIONS AND KEY POINTS
TERMS DEFINITIONS Electron transport chain • The collection of molecules embedded in the inner membrane of the mitochondrion is called electron transport chain Krebs cycle Krebs cycle is a…
THE METABOLIC POOL
Th destructive chemical reactions (catabolism) of glycolysis and the Krebs cycle pe orm many functions. They constitute a metabolic pool. This pool supplies materials for synthesis (anabolism) of many important…
CONTROL OF METABOLISM
Cells are very efficient. They do not waste. energy and do not make substance which they do not need. Following process keeps the metabolism of different compounds under control: Control…
METABOLISM OF FATS AND PROTEINS
ALTERNATIVE FOOD MOLECULES The catabolism of glucose is the most common metabolic pathway in cells. But animals also consume fats and proteins. These may be used to harvest energy. Fats…
THE ENERGY SCORE FOR AEROBIC RESPIRATION
A BALANCE SHEET T eukaryotic cell obtains a net gain of 36 ATP molecules from the breakdown of ach glucose molecule. 1. GI colysis: Glycolysis produces four ATP molecules. But…
AEROBIC RESPIRATION: THE MAJOR SOURCE OF ATP
The glycolysis and fermentation are inefficient processes. Thus the end product of glycolysis (pyruvate) still contains large amount of energy. This energy can be released by further oxidation. Free oxygen…
GLYCOLySIS
Glycolysis is the initial step of catabolic chemical reactions. It occurs almost in all the cells. Six-carbon glucose molecule is broken down into two molecules pyruvate during glycolysis. Pyruvate is…