Terms
The smallest unit
CELL
What major events in the history that you remembered in the history of Cell Biology?
1665-Robert Hooke observes Cork Cells
1827-Kark Von Baer discovers the mammalian egg
1855-Rudolf Virchow adds to the Cell Theory
Identify the five individuals and their discoveries mentioned in Chapter 4, Section 1.
1. Robert Hooke (English Scientist) in 1665-Dead cell
2. Anton Van Leeuwenhoek (Dutch) in 1673-Living things
3. Botanist Mathias Schleiden (German) in 1838-All plants are composed of cells
4. Zoologist Theodor Schwann (German) in 1839-Animals are composed to cells
5. Rudolf Virchow (German) in 1855-Found Cells originated from existing cells
What are the types of Cell Theory?
1. All living things contain cells
2. Some have only one, others have more cells
3. It is the basic units of structure and function in organism
4. Cells reproduction to form new cells
What are the two sizes that are mentioned on the PowerPoint?
1. Size varies from 0.2 to 20
2. Animal cells vary from 10 to 50
What is Cell Theory?
Cell Theory cell has three essential part
What is light Micro-scope?
An instrument that uses optical lenses to magnify objects by bending light rays
What are the differences between Eukaryotes and Prokaryotes?
Organisms that have their cells' nucleus surrounded by membrane are called Eukaryotes, like plants and animals. while the prokaryote is an organism whose cells do not have membrane-bound nucleus like bacteria and Archaea.
Name eight characteristics that all living things share
1. Organized parts
2. Obtain energy from the surrounding
3. Perform Chemical Reaction
4. Change with time
5. Respond to environmental
6. Reproduce
7. Internal environment
8. Ever-changing external environment
What is the largest Organelle at the center?
Nucleus
What is Hemeostasis?
The ability to maintain a constant internal environment