Biological Elements Flashcards
what is an element?
different types of atoms.
what elements are living things predominantly made up of?
- carbon
- hydrogen
- oxygen
- nitrogen.
- phosphorus
- sulfur
what is a molecule?
when two or more atoms bond together.
what is a covalent bond?
two atoms share electrons
how many bonds can carbon form?
four bonds.
how many bonds can nitrogen form?
three bonds.
how many bonds can oxygen form?
two bonds.
how many bonds can hydrogen form?
one bond.
what is an anion?
an ion with a negative charge.
what is a cation?
an ion with a positive charge.
what elements are carbohydrates made up of?
carbon, hydrogen, oxygen.
what elements are lipids made up of?
carbon, hydrogen, oxygen.
what are proteins made up of?
carbon, hydrogen, oxygen, nitrogn, sulfur.
what are nucleic acids made up of?
carbon, hydrogen, oxygen, nitrogen, and phosphorus.
what is a polymer?
long-chain molecules made up by the linking of monomers in a repating pattern.
