Lecture 2 Unit 1 Flashcards
what bonds connect molecules
covalent
what is the smallest unit of life
a cell
what is a chemical bond
when two atoms interact
what is a molecule
when two atoms combine
what is a covalent bond
formed when two atoms share a pair of electrons
what is a molecular orbital
created by covalent bonds and refers to the orbital generated by shared electrons
what is the definition of electronegativity
the ability of an atom to attract a shared pair of electrons in a covalent bond more than its partner atom
what is an ionic bond
when one atom is much more electronegative than the other , a complete transfer of an electron may take place
what are ionic bonds formed by
electrical attraction between ions of opposite charge
what are proteins composed of
amino acids
what are Nucleic Acids composed of
nucleotides
what are carbohydrates composed of
sugars
what are lipids composed of
fatty acids
what are examples of polymers
proteins, Nucleic Acids, and carbohydrates
what are examples of monomers
amino acids, nucleotides, sugars
