book 2. Chapter 1 Flashcards
(17 cards)
cell membrane
a phopholipid 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.
nuclueus
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.
Prokaryote
an organism that consists of a single cell that does not have a nucleus.
Eukaryote
an organism made up of cells that have a nucleus enclosed by a membrane; Eukaryotas 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.
ribisomes
cell organelle composed of RNA and protein; the site of protein synthesis.
Endoplasmic Reticulm (ER)
a system of membranes that is found in a cells cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids.
mitocondron
in eurkaryotic cells, 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 transported out of a cell.
vesicle
a small cavity or sac that contains materials in eukaryotic cell
lysosome
a cell organelle that contains digestive enzymes.
tissue
a group of similar cells that perform a common function`
organ
a collection of tissues that carry out a specialized function of the body.
organ system
a group of organs that work together to perform body functions
structure
the arrangement of parts in an organism
function
the special, normal, or proper activity of an organ or part.
