a close look into cells
cell theory
1. all organisms are made up of one or more cells 2. cells are the basic units of structure and function in all organisms 3. all cells come from cells that already exist
organelles
A tiny cell structure that carries out a specific function within the cell, means little organ
chloroplast
captures sunlight and uses it to produce food through photosynthesis (plant)
nucleus
control center of the cell (P and A)
nuclear membrane
covers and protects the nucleus (P and A)
lysosome
digests old cell parts, food, or other objects (P and A)
ribosomes
makes proteins (P and A)
golgi body
packages and secretes proteins for use in and out of the cell (P and A)
cytoplasm
pads and supports organelles inside the cell (P and A)
nucleolus
produces ribosomes (P and A)
cell wall
protects and supports the cell (plant)
cell membrane
protects the cell, moves materials in and out of the cell (plant and animal)
chromatin
provides instructions for the cells activities (growth and reproduction) contains DNA (P and A)
vacuole
storage tank for food, water, wastes or enzymes (P and A)
mitochondria
supplies energy to the cell (P and A)
what are cells
the smallest units that carry out the activities of life in organsims
endoplasm reticulum
transports materials like proteins around the cell (P and A)
centriole
used with the spindle apparatus during mitosis (animal)
do cells need an energy source
yes
