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