Cell Parts Flashcards
(20 cards)
cell
in biology the smallest unit that can perform all of lifes processes cells are covered by a membrane and have DNA and cytoplasm
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
cytoplasm
Cytoplasm, the semifluid substance of a cell that is external to the nuclear membrane and internal to the cellular membrane, sometimes described as the nonnuclear content of protoplasm. … In eukaryotes (i.e., cells having a nucleus), the cytoplasm contains all of the organelles.
cell wall
a rigid structure that surounds the cell membrane and provides support to the cell
cell membrane
a phospholipid layer that covers a cells surface acts as a barrier between the inside of a cell and the cells enviroment
Mitochondria
in eukaryotic cells the cell organelle that is surrounded by two membranes and that is the site of cellular respiration
Chloroplast
(in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place.
Golgi complex
cell organelle that helps make and package materials to be transported out of the cell
Endoplasmic reticulum
a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis.
Ribosome
cell organelle composed of rna and protein the site of protein syntheisis
Lysosome
a cell organelle that contains digestive enyzems
Vacuole
a small cavity or space in the tissues of an organism containing air or fluid. 2 : a cavity or vesicle in the cytoplasm of a cell usually containing fluid
Organelle
one of the small bodies in a cells cytoplasm that are specialized to preform in a special function
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 eukaryotes include animals plants and fugi but not archaebacteria or eubacteria
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
Organism
a living thing anything that can carry out a life processes independantly
Structure
the arrangement of parts in an organism
