What is the plasma membrane?
cell membrane, the cell's outer boundary
100
What three things does a plant cell have that an animal cell doesn't?
-Plastids
-Central Vacuole
-Cell Wall
100
What is a vesicle?
small spherically shaped sacs that are surrounded by a single membrane and that are classified by their contents
100
What are the three parts of the cell theory?
- All living things are made of cells
- Cells are the basic unit of all organisms
- Cells are produced only from other cells
200
What is a ribosome?
a cell organelle composed of RNA and protein
200
What is an organelle?
one of the small bodies that are found in the cytoplasm of a cell and that are specialized to perform a specific function
200
What is a Plastid?
an organelle of plant cells that contains specific substances and performs specific functions for the cell
200
What is a lysosome?
a cell organelle that contains digestive enzymes
200
Who was the first person to observe living cells?
Anton van Leeunwenhook
300
What is a Phospholipid Bilayer?
a double layer of phospholipids that makes up plasma and organelle membranes
300
What is tissue?
a group of similar cells that perform a common function
300
What is the Central Vacuole?
a large cavity or sac that is found in plant cells or protozoans and that contains air or partially digested food
300
What is the Golgi Apparatus?
a cell organelle that helps make and package materials to be transported out of the cell
300
Who was the first scientist to use and practically "invent" the light microscope?
Robert Hooke
400
What is a Microfilament?
a fiber found inside eukaryotic cells that is composed mainly of the protein actin and that has a role in cell structure and movement
400
What is an organ?
a collection of tissues that carry out a specialized function of the body
400
What is the plastid in a plant cell that contains chlorophyll?
Chloroplast
400
What is the nucleus?
controls most of the functions of a eukaryotic cell
400
Who discovered that all plants are composed of cells?
Matthias Schleiden
500
What is the Endoplasmic Reticulum?
a system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids
500
What is cilium?
a hairlike structure arranged in tightly packed rows that projects from the surface of some cells
500
What is a Thylakoid?
a membrane system found within chloroplasts that contains the components for photosynthesis
500
What is the nucleolus?
the part of the eukaryotic nucleus where ribosomal RNA is synthesized
500
Which German Physician discovered that all cells come from other cells?