active

Having a lot of energy and enthusiasm

Full of energy and active

Having a lot of strength and energy

Full of energy and activity that makes people feel excited

Giving full attention to an activity or idea

Busy doing something and not free to do other things

Not taking action or trying to change what happens

Not working or being used

Not active now but able to become active later

Not being used or working now

A part of an enzyme or antibody where molecules attach and reactions start

A sentence where the subject does the action

A substance that directly changes how a body or germ works

A person who helps with and joins local community projects like volunteering and neighborhood watch

Energy in an electrical circuit that does useful work, like turning motors or lighting lamps

A way of protecting an area from enemy planes or missiles using weapons and electronic systems to stop them

Childbirth in which the mother moves and changes position to help labor

A computer program that is running and showing on the screen so you can use it

Money or property that can be quickly turned into cash and used in business

Protection your body makes using antibodies after an infection or vaccine

A way some fish find objects by making a weak electric field and sensing changes in the field

A fake treatment that causes side effects like a real drug to keep people in the trial unaware

A screen that uses a small electronic part for each tiny dot to make images sharper and faster

A speaker with a built-in amplifier that makes low bass sounds

To move a substance across a cell membrane from low to high concentration using energy

Travel by walking or cycling for everyday trips

A way of holding property where the person in charge must manage it and act for the people who benefit

A treatment for HIV that uses several medicines to lower the amount of virus in the body

A chemical in soaps and detergents that helps water mix with oil