Bio 93- Midterm 1 Exam Questions and Answers with Verified Solutions | Latest Updated 2026

Bio 93- Midterm 1 Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026



atoms smallest unit of chemical elements



molecules two or more atoms combined



compound two or more elements combined in a fixed
ration


C, O, H, N ... are 4 elements that make up 96% of all
living
matter


covalent bond what is the strongest bond?



covalent sharing of electrons by two atoms



ionic transfer of electrons between two atoms



hydrogen bond what is a weak bond?

, hydrogen bond the H atom forms one covalent bond and a
second
weaker bond with an atom in another
molecules


nonpolar equal sharing of electrons
(two of the same element)


polar unequal sharing of electrons
has a charge
(water)


negative what is the charge of O in water?



positive what is the charge of H in water?



cohesion interactions between water molecules
(H2O with H2O)


solvent interactions between water and other
molecules


4 bonds what is the maximum amount of bonds that
hydrogen can form?


15% in room temperature of water what % is the
maximum amount of bonds going to be
made?