Levels of Organization
Smallest level of biological organization in the human body.
What is a cell?
This term describes when a cell becomes committed to becoming a specific type of cell.
What is determination?
These cells carry oxygen using hemoglobin
What are red blood cells?
This system provides structure and support.
What is the skeletal system?
Homeostasis means keeping internal conditions ____.
What is stable or balanced?
These two systems work together to deliver oxygen to the body.
What are the circulatory and respiratory systems?
Cells working together form this level.
What is a tissue?
The process where a determined cell actually develops into its specialized form.
What is differentiation?
These cells send electrical messages throughout the body.
What are neurons?
This system delivers nutrients and oxygen throughout the body.
What is the circulatory system?
Sweating to cool down is an example of this feedback loop.
What is negative feedback?
Bones produce blood cells for this system’s circulation.
What is the immune system or circulatory system? (Accept both)
Organs working together form these.
What are organ systems?
All cells in your body contain the same DNA, but different genes are turned on or off. This is known as…
What is gene expression?
These immune cells attack pathogens and are part of defense.
What are white blood cells?
The system responsible for breaking down food.
What is the digestive system?
The skin, blood vessels, and sweat glands maintain this during exercise.
What is body temperature?
The muscular and skeletal systems work together to allow this.
What is movement?
List the five levels of organization in order.
What are cell → tissue → organ → organ system → organism?
cell’s potential to become many different types of cells refers to its level of ____.
What is potency?
These muscle cells are involuntary and found lining organs like the stomach.
What are smooth muscle cells?
This system controls rapid responses with electrical signals.
What is the nervous system?
This organ filters the blood and helps regulate water and salt balance.
What are the kidneys?
The nervous and endocrine systems communicate to maintain ____.
What is homeostasis?
This level includes structures like the heart, lungs, and brain.
What is the organ level?
Stem cells undergo these two processes to form tissues during development.
What are determination and differentiation?
The structure and function of specialized cells depend on this internal factor.
What is gene regulation?
The endocrine system sends messages using these chemicals.
What are hormones?
Insulin and glucagon maintain this type of homeostasis.
What is blood glucose regulation?
Digestive, respiratory, and circulatory systems must work together to deliver these three things to cells.
What are oxygen, nutrients, and water?