Unit used by imaging technologies
Organelles of

Biological Molecules: Key Terms

electron microscope

zoom range of 100um to 0.1nm

a microscope that uses a beam of accelerated electrons as a source of illumination

X-rayCrystallography

X rays with wavelengths the size of the space between atoms, directed though crystal of substance being examined creating a pattern that a computer reads and creates a model of substance.

Nucleus

Stores the cell's DNA for replication

Cell Membrane

allows important molecules to pass in and out of the cell while preventing unwanted molecules from entering the cell

vacuole

Stores nutrients, breaks down waste, helps cell grow

chloroplast

use energy from the sun to convert co2 and water into sugar

give plants their green colour

Mitochondia

contain their own DNA

responsible for generating energy for the cell using sugar and oxgen

Lysosome

proteins are transported to the lysosome to be degraded

ribosome

found in cytoplasm

particle consisting of RNA and protein

endoplasmic reticulum

Make up about half of the cell membrane

preforms chemical reactions and stores important enzymes. Also packs proteins and fats to be sent to the Golgi apparatus

Golgi apparatus

responsible for tagging protein for propper delivery within the cell

cytoskeleton

Cytoskeleton gives the cell its shape and helps organize during cell division

Acts as the cell's highway for the transport of cargo via motor proteins

micrometer

a unit of measure 0.001 the size of a mm

Cell Wall

Tough outer shell of cell, provides support

Only Plant cell

Cell Organelles

Imaging technologies

Light microscope

can view objects as small as 200nm

Uses light

Cell tagging

follows individual molecules in a cell

a method of this involves adding a coloured or fluorescent chemical to the cell which binds to certain function groups highlighting specific areas of the cell