Chapter 3 Vocab Flashcards
Cell membrane
A phospholipid layer 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 processes such as growth, metabolism, and reproduction.
Prokaryotes
An organism that consists of a single cell that does not have a nucleus.
Eukaryotes
An organism made up of cell’s that have a nucleus enclosed by a me brain; eukaryotes include animals, plants, and fungi, but not archaea or bacteria.
Cell wall
A grid structure that surrounds the cell membrane and provides support to the cell.
Ribosomes
Cell organelle composed of RNA and protein; the site of protein synthesis.
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.
Cell
In biology, the smallest unit that can perform all life processes; cells are covered by a membrane and have DNA and cytoplasm.
Mitochondrion
In eukaryotes cell’s, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration.
Golgi complex
Cell organelle that helps make and package materials to be transport out of the cell.
Vesicle
A small cavity or sac that contains materials in a eukaryotic cell.
Lysosomes
A cell organelle that contains digestive enzymes.
Tissue
A group of similar cell’s that perform a common function.
Organ
A collection of tissues that carry out a specialized function of the body.
