The levels of "parts" from small to large that make up organisms

The ability to do work

To get information and react to it in some physical way

To go from a smaller form to a larger form

To change over time

To create new individual organisms "offspring" from "parents"

A rigid support layer that surrounds the cells of plants and bacteria

A thin, flexible barrier that surrounds a cell and controls which substances pass into and out of a cell

A large oval organelle that contains the cell's genetic material in the form of DNA and controls many of the cell's activities

A tiny cell structure that carries out a specific function within the cell

A small grain-shaped organelle in the cytoplasm of a cell that produces proteins.

The thick fluid region of a cell located inside the cell membrane (in prokaryotes) or between the cell membrane and nucleus (in eukaryotes).

Rod-shaped cell structures that convert energy in food molecules to energy the cell can use to carry out its functions.

An organelle that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another.

An organelle in a cell that receives proteins and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell.

A sac-like organelle that stores water, food, and other materials.

An organelle in the cells of plants that captures energy from sunlight and changes it to an energy form that cells can use in making food.

A cell organelle which contains chemicals that break down large food particles into smaller ones and that can be used by the rest of the cell.

Consisting of many cells

Made of a single cell

A group of similar cells that perform the same function.

A body structure that is composed of different kinds of tissues that work together.

A group of organs that work together in performing vital body functions.

The first part of The Cell Theory based on the work of Matthias Schleiden and Theodor Schwann.

The second statement of The Cell Theory. It is also based on the work of Matthias Schleiden and Theodor Schwann.

The third statement of The Cell Theory. This is based on Rudolf Virchow's observation of living cells reproducing.

A cell that does NOT have a nucleus. The Eubacteria and Archaebacteria have prokaryotic cells. They are simple, small cells.

A cell that has a nucleus. Animals, plants, fungi, and protists have eukaryotic cells. They are complex and larger than prokaryotic cells.

Wanted to help people who couldn't see well. Created the first lens and made a simple microscope.

Spent a lot of time studying and drawing specimens under his handmade microscopes. Published a book in 1665 with his drawings. His drawing of "cork cells" is famous. He gave us the word "cell" for use with living things. He discovered cells.

Improved the microscope with a secret technique. Made hundreds of microscopes. He saw the first living microorganisms. He is called the "Father of Microscopy".

He studied plants. He looked at lots of plants under the microscope; their leaves, flowers, roots and stems. He decided that "All plants are made of cells".

He studied animals. He looked at animal tissues under the microscope and saw cells. He came to the conclusion, "All animals are made of cells".

He was a doctor. He studied human illness and looked at diseased body tissue. He observed living cells dividing into two parts. He came to the conclusion that living cells reproduced and made new living cells.

A basic theory of biology that describes one of the major characteristics of life. All living things have cells. This theory replaced the theory of Spontaneous Generation.