Bio 103 Chapter 2 & 3 Test Questions and Answers 100% Pass

Bio 103 Chapter 2 & 3 Test Questions and Answers 100% Pass What scientific discipline explores the intricate chemistry and physics of biological molecules? Biochemistry What type of compounds lack a carbon backbone in their molecular structure? Inorganic compounds What is the fundamental substance that cannot be broken down into simpler components through ordinary chemical reactions? Elements Each element has a unique identifier. What is the term for this identifier? Chemical symbol Which four elements account for nearly 96% of the mass of most living organisms? Oxygen, Carbon, Hydrogen, and Nitrogen What is the smallest unit of an element that retains its chemical properties? Atom What are the three subatomic particles that comprise an atom? Protons, Neutrons, and Electrons What particle carries a negative electric charge and orbits around the nucleus? Electron What is the positively charged particle found in the nucleus? Proton What particle has no charge and is also found in the nucleus? Neutron Where do protons and neutrons reside