This program profiles the structure of a eukaryotic cell, describing the form and function of each part of a cell. The program covers the phospholipid bilayer, cytoskeleton, cytoplasm, mitochondria, lysosome, nucleus, and the rough and smooth endoplasmic reticulums.
This program outlines the essential features of enzymes and their vital role in all living cells. It discusses the function of a catalyst and enzymes as organic catalysts and looks at activation energy and enzyme structure. It illustrates the lock and key model of enzyme action, examines the roles of coenzymes and cofactors, and explores such factors affecting enzyme action as temperature, pH, enzyme concentration, and substrate concentration. It also looks at competitive and non-competitive enzyme inhibition and discusses enzymes and DNA
Using animation and photomicrography, this program illustrates the essential steps of photosynthesis and explains its vital role in converting light to chemical energy. It examines chloroplast structure and function and shows the steps of photosynthesis, looking at the light-dependent stage and the light-independent stage and the inputs and outputs of each. The program presents key factors affecting photosynthesis, including light intensity, water availability, carbon dioxide concentration, and temperature; considers the use of glucose by plants; and examines chemosynthetic organisms. It also features a separate sequence illustrating the steps of the Calvin cycle.