AP Bio Chapters 42/2 Quiz Review

Which elements comprise 96% of living matter?

• C, H, O, N

• C, N, Ca, He

• C, O, Ca, P

• C, H, O, P

Tags

NGSS.HS-LS1-6

Which common elements in living things are electronegative?

• C and H

• O and N

• C and O

• N and H

Tags

NGSS.HS-PS1-2

What type of bond is most typically seen within a biological molecule?

• Ionic

• Covalent

A covalent bond between a C and an H would be

• polar

• Non polar

A covalent bond between an O and a H would be

• Polar

• Nonpolar

In a polar covalent bond between an N and a H, the electrons would be more attracted to the

• N

• H

In a polar covalent bond, the atom that attracts the electrons more carries a charge that is somewhat

• Positive

• Negative

In a water molecule, the hydrogens are partially

• positive

• negative

Tags

NGSS.MS-PS1-1

Bonds that form between partial positives and partial negatives are called

• polar covalent bonds

• nonpolar covalent bonds

• hydrogen bonds

• ionic bonds

Tags

NGSS.HS-PS1-3

Compared to the strength of covalent bonds, hydrogen bonds are

• stronger

• weaker