Levels of Organization
Requirements of Organisms
Organ Systems
Characteristics of Life
Homeostasis
100
The three subatomic particles found within an atom.
What are electrons, protons and neutrons?
100
The most abundant substance in the body.
What is water?
100
The organ system including the heart, arteries, capillaries and veins.
What is the cardiovascular system.
100
A reaction to a change inside or outside of the body.
What is responsiveness?
100
The mechanism that returns the internal environment back to normal conditions.
What is negative feedback?
200
The lungs, stomach, and brain are examples of what level of organization?
What is the organ level?
200
The gas that makes up 1/5 of the atmosphere, necessary in our bodies to release energy from nutrients.
What is oxygen?
200
The organ system including the mouth, stomach, small and large intestines.
What is the digestive system?
200
The breakdown of food into simpler forms that can be absorbed.
What is digestion?
200
Muscles or glands that cause responses that alter internal environment conditions.
What are effectors?
300
These are the 'organs' of a cell.
What is the organelle?
300
The substances that provide necessary chemicals to organisms.
What is food?
300
The organ system including the nasal cavity, trachea and lungs.
What is respiratory system?
300
The changing of absorbed substances into different chemical forms.
What is assimilation?
300
These provide information about specific internal conditions.
What are receptors?
400
These are large molecules, made up of the combination of multiple smaller molecules.
What is a macromolecule?
400
An application of force on an object.
What is pressure?
400
The organ system including the hair, nails and skin.
What is the integumentary system?
400
The change in position of the body or body part.
What is movement?
400
The place where a deviation from normal set points is detected.
What is a control center?
500
This level of organization includes multiple organs that combine to perform their functions together.
What is the organ system?
500
A substance important for transporting substances in organisms as well as regulating body temperature.
What is water?
500
The organ system including hormone secreting glands.
What is the endocrine system?
500
The removal of waste produced by metabolic reactions.
What is excretion?
500
The control center that regulates internal body temperature in humans.
What is the hypothalamus?
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