Science Quiz on Atomic Structure and Cell Biology

What subatomic particles are found in the nucleus of an atom?

• Electrons only

• Protons and electrons

• Protons and neutrons

• Neutrons and electrons

Which of the following statements is TRUE about electrons?

• They are found inside the nucleus

• They carry a positive charge

• They orbit the nucleus in atomic orbitals

• They are heavier than neutrons

How many naturally occurring elements are there?

• 12

• 29

• 98

• 118

Which 6 elements make up the bulk of biological matter (CHNOPS)?

What does the atomic number (Z) of an element represent?

Where is the atomic number located in the periodic table?

• Below the symbol

• Above the symbol

• To the right of the symbol

• It is not shown

What is the atomic mass unit called?

Which of the following is an isotope of carbon that is radioactive?

• 12C

• 13C

• 14C

• 11C

What distinguishes one isotope from another?

Which carbon isotope is used in radiocarbon dating?