Cells

What is a cell?
A cell is the smallest complete piece of a living thing. cells are like building blocks because they go together to form whole plants, animals, and any organisms. They are living things and need water, food, air, and energy. In order for them to obtain these resources they have to absorb them through their cell membrane. They are also a structural and functional unit of all living organisms.
How many cells do organisms have?
The amount of cells that organisms have varies. some organisms such as bacteria may be unicellular and consist of only one cell. Other organisms such as humans are multicellular and have around 100,000,000,000,000 cells.
What is the cell theory?
The cell theory was developed in 1839 by Schleiden and Schwann. It states that all organisms are composed of one or more cells. This means that all cells come from preexisting cells.
What can cells do?
Each cell has its own set of directions. It has to take in nutrients and convert them into energy. Some cells carry out functions. Others reproduce if necessary.
What types of cells are there?
There are two types of cells that all other cells fall in. There are Eukaryotic and prokaryotic. Eukaryotic cells are found in multicellular organisms, have nuclear membrane, and are ten times the size of prokaryotics. Prokaryotics are found in unicellular organisms, are small, and lack in nuclear membrane.
What is metabolism?
In successive cell divisions cells grow through the functioning of cellular metabolism. This is the process in which individual cells process nutrient. first the cells break down complex molecules to produce energy and reduce power. Then the cells use all that energy to construct complex molecules and to perform other biological functions. When cells use this process they can brek sugar that the organism has consumed into a less chemically-complex molecule called glucose. Then the glucose is broken down into ATP, which is a type of energy.
What is cell division?
This process involves a single cell dividing into two daughter cells. This process leads to growth in a multicellular organism. Prokaryotic cells divide by binary fission. Eukaryotic cells usually go through a process called mitos followed by the division of cells called cytokinesis.

Overall, cells are a cool topic to learn about visit this website for more information. http://web.jjay.cuny.edu/~acarpi/NSC/13-cells.htm
http://en.wikipedia.org/wiki/Cell_(biology)