Form the parts of an organism and carries out all of it's functions

Has a rigid layer that surrounds the cells and other organisms.

Any substance that cannot be broken down into simpler substances is a...

The cell membrane is ____ which means that some substances can cross the membrane while others cannot

Large round knob on the side of the microscope used for focusing on the specimen

This was a widely accepted explanation of the relationship between cells and living things

Small grain shaped organelles that produce proteins

This forms when two or more elements combine chemically

The movement of dissolved materials across the cell membrane without using the cells energy is called

Controls the amount of light going through the aperture

What are the three different lenses of the microscope

Fills the region between the cell membrane and the nucleus

These are compounds mostly made of carbon and hydrogen and some oxygen

______ is the process by which molecules move from an area of higher concentration to an area of lower concentration

The part of the microscope used to carry it

It wasn't until this time period that no one knew cells existed

An organelle with a network of membranes that produces many substances

These are very long organic molecules and consist od carbon, oxygen, hydrogen, nitrogen, and phosphorus

The process where the cell membrane changes shape and engulfs the particle.

Shiny, and clips on top of the stage

This English scientist built his own microscopes and made drawings of what he saw when he looked through them

A type of sac that stores water food and other materials

These are a group of proteins that speed up chemical reactions in living things.

The opposite process where the cell membrane fuses, pinching off a vacuole within the cell

The hole in the stage that allows light through for viewing of the specimen