Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Doerre Biology 2018-2019 Biological Processes, Systems, and Organization.

Atom Smallest non-living unit of all things. Lowest on the levels of organization
(Bio)Molecule A substance made up of several atoms. Biomolecules are made up of at least one carbon atom in addition to other atoms.
Organelle Structures in cells that have specific functions. Made of several molecules.
Cell Smallest living unit of all living things. Basic unit of structure and function. Contains several organelles.
Tissue A group of cells that work together to perform a specific function.
Organ A group of tissues that work together to perform a specific function.
Organ System A group of organs that work together to perform similar functions.
Organism A living thing. Has many organ systems.
Population A group of organisms of the same species in one area.
Community All the populations in an area.
Ecosystem All the living and nonliving things in an area.
Biome Ecosystems with the same climate and dominant plant communities.
Biosphere The area of Earth in which all organisms reside.
Epithelial Tissue The tissue that lines the interior and exterior of the body.
Connective Tissue Includes fat cells, bone cells, and blood cells.
Nervous Tissue Can be found in the brain, spinal cord, and nerves.
Muscle Tissue Helps perform voluntary and involuntary movements. Found in many organs.
Nervous System Recognizes and coordinates the body's response to changes.
Integumentary System Guards against ultraviolet light.
Immune/Lymphatic System Protects the body from disease.
Muscular System Produces voluntary and involuntary movement.
Circulatory System Transports oxygen to cells.
Skeletal System Protects internal organs.
Respiratory System Brings in oxygen for cellular respiration.
Digestive System Breaks down food.
Excretory System Eliminates waste products from the body.
Endocrine System Controls growth and metabolism.
Reproductive System Produces gametes.
Homeostasis A relatively constant internal, physical, and chemical condition that organisms maintain.
Feedback Inhibition/Negative Feedback Process in which a stimulus produces a response that opposes the original stimulus.
Created by: D4C121