Biology includes both theory and diagrams, so presenting information correctly is essential. Many questions require labeled diagrams, flowcharts, or step-by-step explanations. To score well ...

How does the urinary system work? The urinary system's function is to filter blood and create urine as a waste by-product. The organs of the urinary system include the kidneys, renal pelvis, ureters, ...

The brain is a complex organ that controls thought, memory, emotion, touch, motor skills, vision, breathing, temperature, hunger and every process that regulates our body. Together, the brain and ...

The early differentiation of germ cells, those that will form egg and sperm, is a critical and nearly universal step in animal development. This paper reveals new layers of molecular and cellular ...

Before birth, unspecialized stem cells go through a process called differentiation to form the many types of cells found in the adult. Neural crest cells are a group of these stem cells found in all ...