SCIENCE

• Robert Hooke - He was the first to use the term "cells"
• Eye Piece - Where you look through to view the object placed on the stage.
• Eye Piece Tube - Holds the eyepiece lens in place
• Hans and Zacharias Janssen made the first microscopes
• Antonie van Leeuwenhoek first observed what he called the “animalcules”
• Body Tube - Connects the eyepiece to the objective lenses
• The Coarse Adjustment Knob allows quick focusing by moving the body tube/stage up or down
• The Fine Adjustment Knob is used for precision focusing at higher magnifications.
• Revolving Nosepiece - Revolving part that contains the objective lenses.
• Objectives - Plays a big role in establishing quality of images
• Scanning - 4x LPO - 10x HPO - 40x Oil Immersion - 100x
• The Arm is the main frame to which the base and other parts are attached
• Base - Supports the microscope
• Stage Clips - holds the glass slides in place
• Diaphragm - Wheel-shaped device that regulates the amount of light passing the specimen
• Mirror - Reflects the light to the lens of the microscope
• Stage - Supports the microscope and slide
• Biosphere -All the biomes found on Earth and the surrounding atmosphere that support life.
• Biome – A certain region of land that is known for specific ecosystems
• Ecosystem – All of the biotic and abiotic factors interacting in an area
• Community – The interaction between different populations in a shared area
• Population – A group of certain species of the same type of organism that live in the same area
• Organism – A living thing; anything that can carry out life processes independently
• Organ System – A group of organs working together to perform a specific function
• Organ – A group of similar tissues working together to perform a specific function
• Tissue – A group of similar cells working together to perform a specific function
• Cell – The basic unit of life
• Cell Organelles – Small structures in the cell that carry out the processes in the cell
• Molecules – Made of two or more atoms held together by chemical bonds
• Atom – Basic unit of matter
• Mycoplasma Gallicepticum -the smallest cell.
• Ostrich’s Egg – Largest egg cell
• Robert Brown dicovered the nucleus cell
• Theodor Schwann, Matthias Schleiden, and Rudolph Virchow - The three German Scientists
• Prokaryotic - Lack a defined nucleus
• Eukaryotic – Have a defined nucleus
• Cell Membrane - Also called the plasma membrane or plasmalemma.
• Nucleus - The command center of the cell
• DNA - Deoxyribonucleic Acid
• Cytoplasm - A gel-like matrix containing water, salts, proteins, and other molecules.