DNA Structure
What is DNA Structure? What do a human, a rose, and a bacterium have in common? Each of…
Cellular Respiration
What is Cellular Respiration? Some organisms, such as plants, can trap the energy in sunlight through photosynthesis (see…
Photosynthesis
What is Photosynthesis? A great variety of living things on Earth, including all green plants, synthesize their foods…
Cells and Energy
What are Cells and Energy? The Laws of Thermodynamics; Life can exist only where molecules and cells remain organized.…
What is The Chemical Basis of Life?
What is The Chemical Basis of Life? Understanding of Chemical; A chemical substance is a form of matter that…