PROCESS OF PHOTOSYNTHESIS
sana Photosynthesis (photo-light, synthesis-putting together) may be defined as the process in whieh the green plants synthesize carbohydrates from carbon dioxide and water, using the energy of sunlight. 673 K cal…
MODEL SUBJECTIVE QUESTION OF ENERGY AND ENZYME
abida What is energy? Give its forms. How is it measured? Discuss laws of thermodynamics. Write note on activation energy. Write note on enzyme. Give structure of enzyme. Describe function of…
Physio – Chemical Nature of Cytopsasm
rubab The living content of the protoplasm between plasma membrane and nucleus is called cytoplasm. Living content of eukaryotes is divided in to nucleus and cytoplasm. These living contents (nticlebs and…
DEFINITIONS AND KEY POINTS OF ENERGY AND ENZYME
TERMS DEFINITIONS Energy The capacity, to do work is called energy. Work Work is the transfer of energy. Thermodynamics The study of energy is called thermodynamics kilocalorie A kilocalorie (Kcal)…
OBJECTIVE FOR ENZYMES
Multiple Choice Questions (MCQs) Which of the followings enzymes is not protein? (a) Diastase (b) Pepsin (c) Ribozymes (d) Trypsin Key and lock model was proposed by: (a) Kosh land…
NOW CELLS CONVERT ENERGY: AN OVERVIEW
Animals make ATP in two ways: Substrate level phosphorylation The synthesis of ATP during reaction of glycolysis and Krebs cycle is called substrate level phosphorylation. ATP formation from ADP and…
ATP: THE CELL’S ENERGY CURRENCY
The major energy L.:rrency of all cells is adenosine triphosphate (ATP). ATP plays a central ro:(.. ( energy currency in all organisms. So it appeared early in the iNstor. .M…
PHYSIO -CHEMICAL NATURE OF PLASMA MEMBRANE
The plasma membrane surrounds the cell. Chemically plasma membrane is composed of: (a) Protein: 60 to 80% (b) Phospholipids: 20 to 40% (e) Cholesterol in small amount (d) Carbohydiutes in…
COFACTORS AND COENZYMES
Cofactors The metal ions which are loosely attached with the enzymes are called cofactors. These metal ions are Ca-2, mg-2, mn-2, 2, Cu” and Zr12. These metal ions change a…
Enzymes : Biological Catalysts
An enzyme is a biological catalyst that can accelerate a specific chemical reaction by lowering the activation energy but remain unaltered in the process. Most enzymes are proteins. Some are…