What is the basic unit of structure and function of all living things?
Cell
100
Tissue that makes up bones, tendons, and ligaments is...
Connective Tissue
100
Which system breaks down our food into nutrients?
digestive system
100
What are the projections of the inside wall of the small intestine?
Villi
100
Air sacs in the lungs through which oxygen and carbon dioxide diffuse into and out of the blood are called?
alveoli
200
What is a thin covering that holds the parts of the cell together?
Cell Membrane
200
Bile, produced by the liver, breaks down....
fats
200
Which system contains the left and right ventricles?
Circulatory system
200
What are the smallest blood vessels called?
capillaries
200
These connect muscles to bones?
Tendons
300
What is the control center of a cell?
Nucleus
300
The urea and water that make up urine are removed from the blood in the ____?
kidneys
300
Which system removes wastes from the body?
Excretory System
300
Similar cells working together?
tissue
300
Made up of a cell body, an axon, and several dendrites?
neuron
400
What is the jellylike substance containing many chemicals to keep the cell functioning?
Cytoplasm
400
A plant stands up straight because of water pressure against the >>>>
Cell walls
400
Which system contains the alveoli and bronchial tubes?
Respiratory System
400
Cells that detect conditions in the body's environment are called?
receptors
400
Water and materials dissolved in water pass through a membrane by......?
osmosis
500
What is the process of particles of a substance moving to an area where there are a lot of particles of the substance to an area where there are fewer particles of the substance?
Diffusion
500
A neuron transmits signals from the ________?
axon
500
Which system includes the deltoid?
Muscular
500
These connect bone to bone.
ligaments
500
This structure is located in the kidney and filters urea and water from the blood.