basic unit of structure and function in living things
device that produces magnified images of structures that are too small to see with the unaided eye
This says that all living things are made of cells, that cells are the basic unit of structure and function and that cells only come from other cells.
strong layer around the cell membrane in plants, algae, and some bacteria
thin, flexible barrier around a cell; regulates what enters and leaves the cell
a part of the cell containing DNA and RNA and responsible for growth and reproduction
a tiny cell structure that carries out a specific function within the cell
small particle in the cell on which proteins are assembled; made of RNA and protein
a jellylike fluid inside the cell in which the organelles are suspended
the organelles in which nutrients are converted to energy
transports materials in the cell
processes and packages substances produced by the cell
cell organelle that stores materials such as water, salts, proteins, and carbohydrates
a structure in the cells of plants and some other organisms that captures energy from sunlight and uses it to produce food
membrane-bound sac containing digestive enzymes that can break down proteins, nucleic acids, and polysaccharides
organisms that are composed of many cells that are specialized to do certain tasks
a type of organism that is made up of a single cell
group of similar cells that perform a particular function
a collection of tissues that carry out a specialized function of the body
group of organs that work together to perform a specific function
Any substance that can't be borken down into simpler substances
Two or more elements combined chemically.
Energyirch organic compunds made of the elements carbon, hydrogen and oxygen
Compounds that are made mostly of carbon, hydrogen and oxygen
Large organic molecules made of carbon, hydrogen, oxygen, nitrogen and sulfur
A group of proteins that speed up chemical reactions in living things.
Molecules that consist of carbon, oxygen, hydrogen, nitrogen and phospherous.
The genetic material that carries information about an organizm and is passed from parent to offspring.
The shape of a DNA molecule
Substances can cross the membrane while others can't.
The movement of dissolved materials across a cell memebrane without using a cells energy.
The rpocess by which molecules move from an area of high concentration to an area of low concentration.
The diffusion of water molecules across a seletively permeable membrane
The movement of material across a cell memebrane using cellular energy
The cell membrane changes shape and engulfs the particle
Allows large particles to leave a cell