Unit 5 cell vocab

function

the special, normal or proper activity of an organ or part

structure

the arrangement of parts in an organism

cell membrane

a phospholipid layer that covers a cells surface and acts as a barrier between the inside of a cell and the cells environment

organelles

one of the smallest bodies in a cells cytoplasm that are specialized to perform a specific function

Prokaryotic

a single celled organism that does not have a nucleus or membrane bound organelles examples: arches and bacteria

Eukaryotic

an organism made up of cells that have a nucleus enclosed by a membrane ex:protists,animals,plants and fungi

cell

the smallest unit that can perform all life processes; the are covered by a membrane and have DNA and cytoplasm

cell wall

a rigid structure that surrounds the cell membrane and provides support to the cell

ribosome

a cell organelle that’s composed of RNA and protein; the site of protein synthesis

nucleus

in a eukaryotic cell, a membrane bound organelle that contains the cells DNA and that has a role in processes such as growth, metabolism and reproduction

endoplasmic reticulum

system of membranes that is found in a cells cytoplasm and that assists the production, processing, and transport of proteins and in the production of lipids

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 an eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transported within the cell

lysosome

cell organelle that contains digestive enzymes

DNA

(depxyribonucleic acid) molecule that is present in all living cells that contains the information that determines the traits that a living thing inherits and needs to live

Chloroplast

organelles in plant and algae cells in which photosynthesis takes place

mitochondria

in eukaryotic cells, the cell organelles that is surrounded by two membranes and that is the site of cellular respiration