alpha

The whole of something, including its beginning and its end

A confident person who takes charge and leads a group that others follow

A brain rhythm you have when you are awake and relaxed, often when you close your eyes or meditate

A small positively charged part of an atom with two protons and two neutrons released in radioactive decay

A medicine that relaxes muscles in blood vessels and the prostate to lower blood pressure and help pass urine

Radiation made of heavy particles that radioactive materials send out

A type of healthy fat that your body needs, found in plant oils like flaxseed and canola

An early trial of new software run by the developers to find major bugs

A drug that relaxes certain muscles to lower blood pressure and ease symptoms of an enlarged prostate

Protein measured in adults to help find and check some cancers, especially liver cancer

A stream of tiny particles given off by some radioactive materials

A number that shows how well survey or test questions measure the same thing

A form of vitamin E in plant oils that protects your body cells

A pattern of brain waves at eight to twelve times per second in people who are awake but relaxed

A part on nerve cells that makes blood vessels and muscles in organs tighten

A radioactive process where a large atom sends out an alpha particle and becomes another element

A medicine that helps the body's defenses fight viruses and some cancers

An early, unfinished version of a computer program tested mainly by the people who made it

A protein on nerve and blood vessel cells that reacts to body chemicals to make vessels narrow and muscles contract

A group of blood proteins that move fastest in an electric lab test

A very bright star at the bottom of the Southern Cross

A drug that relaxes certain muscles to lower blood pressure and help urine flow in men with an enlarged prostate

A dominant ape who leads and controls other apes

A type of brass metal that bends easily without heating

A metal made from copper and tin used for parts that are easy to shape

A strong brass made with more zinc, used for cast parts and hot work

A magnetic form of iron that appears in steel below 906°C

A magnetic form of iron that exists at normal temperatures

A particle in the blood that carries cholesterol and helps protect the heart

A chemical used to make dyes and to test for sugars in labs

A chemical test that shows a violet ring when sugar is in a liquid

A natural chemical from some plant oils that people use to give perfume or flavor

Protein made in an unborn baby that when high can show birth defects such as spina bifida

A medicine that lowers high blood pressure, often used during pregnancy

A form of iron that is magnetic and stable below 906°C

Letters added to the start of a Greek word to show not or without

A medicine that relaxes blood vessel and bladder muscles to lower blood pressure and help pass urine

Receptor on certain cells that reacts to adrenaline and narrows blood vessels