A plant cell wall is arranged in layers and contains cellulose microfibrils, hemicellulose, pectin, lignin, and soluble protein. These components are organized into three major layers: the primary ...

Cells are the smallest unit of life and the building blocks for all organisms. Each component of a cell has its own function. Animal and plant cells differ and they have similarities. Nucleus, cell ...

Most life on Earth depends upon plants for energy. Plants capture light from the sun and use it to build up chemical stores of energy. This is called photosynthesis. The basic structure of a plant ...