Biology Quiz

What are living organisms composed of?

• Energy

• Matter

• Light

• Sound

How many elements are essential for human life?

• 6

• 12

• 25

• 99

Which six elements make up about 99% of living organisms?

• Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur

• Carbon, Helium, Neon, Argon, Krypton, Xenon

• Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon

• Oxygen, Nitrogen, Fluorine, Neon, Sodium, Magnesium

What is the role of fluoride in municipal water and dental products?

• To make water taste better

• To help reduce tooth decay

• To increase water temperature

• To add color to water

What are the three subatomic particles relevant to the discussion of elements?

• Protons, Neutrons, Electrons

• Protons, Neutrons, Photons

• Electrons, Photons, Neutrons

• Protons, Photons, Electrons

What is the unique number of protons in an element called?

• Mass number

• Atomic number

• Neutron number

• Electron number

How do you calculate the number of neutrons in an atom?

• Add the atomic number to the mass number

• Subtract the atomic number from the mass number

• Multiply the atomic number by the mass number

• Divide the atomic number by the mass number

What is the maximum number of electrons that the first electron shell can hold?

• 2

• 4

• 6

• 8

What is the outermost shell of an atom known as?

• Core shell

• Valence shell

• Inner shell

• Middle shell

What is the term used to describe an atom whose outer electron shell is full?

• Reactive

• Unstable

• Stable

• Neutral