7 Sept Science - Unit 1 Part 2

prokaryotic

cells lacking nuclei and other organelles

eukaryotic

cells containing visibly evident nuclei and membrane bound organelles

organelle

tiny structures inside of cells that perform specific functions within the cell

nucleus

membrane bound organelle that contains DNA; it controls and regulates the activities of the cell

cytoplasm

thick gel-like fluid that fills the cell and moves nutrients; proteins; and organelles within the cell

cell membrane

a thin flexible barrier that surrounds a cell and controls which substances pass into and out of a cell

cell wall

a rigid supporting layer that surrounds the cells of plants and some other organisms

chloroplast

an organelle in the cells of plants and some other organisms that captures energy from sunlight and changes it to an energy form in which the cells can use to make food

lysosome

a cell organelle which contains chemicals that break down food particles and worn out cell parts

mitochondria

rod-shaped organelles that convert energy in food molecules to energy the cell can use to live and function

structure

physical properties; how parts are arranged

function

job or role

cyto-

of a cell or cells

chloro-

green

lys-

to break down; loosen; dissolve

endo-

inside; within; internal

pro-

before

eu-

good; true; genuine

kary-

central kernel or nucleus