chapter 1 Flashcards
(20 cards)
hypothesis
a proposed explanation
controlled experiment
a expariment that tests only one factor at a time
model
a pattern, plan, representation or description
life science
the study of living things
cell membrane
a protective layer that covers the surface of the cell
prokaryotes
an organism that consists of 1 cell
organelle
one of the small bodies in a cell’s cytoplasm
nucleus
contains the cells DNA
eukaryote
an organism made up of cells that have a nucleus enclosed by a membrane
cell wall
a rigid structure that surrounds the cell membrane that only plant cells have
ribosome
cell organelle composed of RNA and protein
endoplasmic reticulum
a system of membranes that is found in a cell’s cytoplasm
mitochondrion
in eukaryotic cells
golgi complex
cell organelle that helps make matirials
vesicle
a small cavity or sac that contains matirials
lysosomes
a cell organelle that contains digestive enzymes
tissue
a group of similar cells
organ
a collection of tissue that carry out a specialized function of the body
organism
a living thing
function
the special normal or proper activity of an organ or part
