Part of the Cell
A phosholipid layer that covers a cell's surface and acts as a barrier between the inside of a cell and the cell's environment.
Cell Membrane
In eukaryotic cells, the organelle that is the site of cellular respiration, which releases energy for use by the cell.
mitochondria
In biology, the smallest unit that can perform all life processes.
cell
The first person to describe cells.
Robert Hooke
The barrier of the cell.
Cell Membrane
A rigid structure that surrounds the cell membrane and provides support to the cell.
Cell Wall
A fluid-filled vesicle found in the cytoplasm of plant cells or protozoans.
vacuole
A living thing; that can carry out life processes independently.
organism
The botanist Robert Brown discovered blobs inside cells. He called these blobs _____.
nucleus
The brain of the cell.
Nucleus
The region of the cell within the membrane that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus.
cytoplasm
Golgi Complex
One of the small bodies in a cell's cytoplasm that are specialized to perform a specific function.
organelle
All organisms are made of one or more cells. The cell is the basic unit of all living things. All cells come from existing cells. These principles make up ________.
Cell Theory
The power plant of the cell.
mitochondia
In a eukaryotic cell, a membrane-bound organelle that contains the cell's DNA and has a role in processes such as growth, metabolism, and reproduction.
nucleus
An organelle found in plant and algae cells where photosynthesis occurs.
chloroplast
An organism made up of cells that have a nucleus enclosed by a membrane; includes protists, animals, plants, and fungi but not archaea or bacteria.
eukaryote
The two German scientist that discovered that cells move concluded that cells must be _____.
alive
The post office of the cell.
Golgi Complex
A cell organelle composed of RNA and protein; the site of protein synthesis.
ribosome
A cell organelle that contains digestive enzymes.
Lysosome
A single-celled organism that does not have a nucleus or membrane-bound organelles; examples are archaea and bacteria.
prokaryote
In the late 1600s, a Dutch merchant studied many different kinds of cells. He made his own microscopes. With them, he looked at tiny pond organism called protists. He also looked at blood cells, yeast, and bacteria. His name was _________.
Anton van Leeuwenhoek
The immune system of the cell.
lysosomes