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the cell
Electrons are components of all atoms.
Direct quote from my textbook: "Elements are the chemical building blocks of matter."MATTER
Carbon is the basic building block of life, but I'm not sure about the isotopes.
The basic unit of matter is an atom. It is also the smallest part of an element that retains all the properties of that element. Since your question ended with an... I would say element fits best.
The basic building block of all matter is the atom.
Atom
An Atom
a cell may be defined as a basic and structural unit of life.
The basic building block of all matter is the atom.
Elements are commonly referred to as the basic building blocks of all matter. This is because you cannot break them down any further and still maintain a whole atom. Once an element is broken down, you have protons and neutrons.
An "Atom" is the basic building block of all molecules [first] and [then] biomolecules.
carbon
An Atom
carbon
The building block of all matter...
The building block of all matter...