Chapter 3 Flashcards
Cell
In biology, the smallest unit that can perform all life processes; cells are covered by a membrane and have DNA and cytoplasm
Cell membrane
A phospholipid later that covers a cell’s surface; acts as a barrier between the inside of a cell and the cell’s environment.
Organelle
One of the small bodies in a cell’s cytoplasm that are specialized to perform a specific function
Nucleus
In a eukaryotic cell, a membrane-bound organelle that contains the cell’s DNA and that has a role in the processes such as growth, metabolism, and reproduction
Prokaryote
An organism that consists of a single cel that does not have a nucleus
Eukaryote
An organism made up of cells that have a nucleus enclosed by a membrane; eukaryotes include animals, plants and fungi, but not archaebacteria or eubacteria
Cell wall
A rigid structure that surrounds the cell membrane and provides support to the cell
Ribosome
Cell organelle composed of RNA and protein; the site of protein synthesis
Endoplasmic reticulum
A system of membranes in which proteins, lipids, and other materials are made
Mitochondrion
Is the organelle in which sugar is broken down to produce energy
Golgi complex
Cell organelle that helps make and package materials to be transported out of the cell.
Vesicle
A small cavity or sac that contains materials in a eukaryotic cell
Lysosome
A cell organelle that contains digestive enzymes.
