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