Principles of Biology 1: Key Concepts and
Organization Exam Quizzes Latest 2026 With
Answers
Atom
The basic unit of a chemical element.
Molecule
Two or more atoms bonded together.
Organelle
Specialized structure within a cell that performs a specific function.
Cell
The smallest unit of life that can function independently.
Tissue
A group of cells that work together to perform a specific function.
Organ
A structure made up of different types of tissues that work together.
Organ System
A group of organs that work together to perform complex functions.
Organism
An individual living entity.
, Population
A group of individuals of the same species living in a specific area.
Community
All the different populations that live together in an area.
Ecosystem
A community of living organisms and their interactions with the environment.
Biosphere
The global sum of all ecosystems; the zone of life on Earth.
Element
A pure substance that cannot be broken down into simpler substances.
Electron
A negatively charged subatomic particle.
Proton
A positively charged subatomic particle found in the nucleus of an atom.
Neutron
A subatomic particle found in the nucleus of an atom that has no charge.
Atomic number
The number of protons in the nucleus of an atom.
Organization Exam Quizzes Latest 2026 With
Answers
Atom
The basic unit of a chemical element.
Molecule
Two or more atoms bonded together.
Organelle
Specialized structure within a cell that performs a specific function.
Cell
The smallest unit of life that can function independently.
Tissue
A group of cells that work together to perform a specific function.
Organ
A structure made up of different types of tissues that work together.
Organ System
A group of organs that work together to perform complex functions.
Organism
An individual living entity.
, Population
A group of individuals of the same species living in a specific area.
Community
All the different populations that live together in an area.
Ecosystem
A community of living organisms and their interactions with the environment.
Biosphere
The global sum of all ecosystems; the zone of life on Earth.
Element
A pure substance that cannot be broken down into simpler substances.
Electron
A negatively charged subatomic particle.
Proton
A positively charged subatomic particle found in the nucleus of an atom.
Neutron
A subatomic particle found in the nucleus of an atom that has no charge.
Atomic number
The number of protons in the nucleus of an atom.
