Scientific Explorer -- Cells and Genetics

Author: Not available
Publisher:
Publication Date: 2003-02-01
Features: A comprehensive science textbook widely used in American middle schools, the best reference book for new curricula, new concepts, and new learning methods. Explore the mysteries of science, guide inquiry-based learning, with equal emphasis on knowledge, skills, and methods, offering hands-on and engaging activities. Before the late 16th century, there was no method to observe cells, and even no one knew their existence. It wasn't until around 1590 that the invention of the microscope made it possible to observe very small objects. The invention of the microscope enabled the discovery and understanding of cells. Once we enter the cell, a large, round object immediately catches the eye. This is the nucleus, the cell's "brain." You can think of the nucleus as the cell's control center, directing all its activities.