BIOCHEM EXAM 1 REVIEW WITH
COMPLETE QUESTIONS AND ANSWERS
{ GRADED A+}
What is a molecule? - ✔✔A sufficiently stable, electrically neutral group
of at least 2 atoms in a definite arrangement held together by very
strong covalent chemical bonds
What are the 6 different elements that most biomolecules contain? -
✔✔C,H,O (always), N (many), S and P (some)
What process results in bond formation? - ✔✔Condensation Reaction
Is bond formation endergonic or exergonic? - ✔✔Endergonic
Bond cleavage is an exergonic process through.. - ✔✔Hydrolysis
,Energy-Rich bonds - ✔✔Anhydride & Thioester
What is the difference between structural and positional isomers? -
✔✔Positional - all functional groups are the same, just in different
positions
Structural - functional groups are not the same
Optical Isomers - ✔✔Has at least one chiral center and differ in
orientation around same or all of the chiral centers
Geometric Isomers - ✔✔Molecules with the same functional groups but
they are arranged across rigid bonds
cis/trans
What are the different types of non-covalent bonds? - ✔✔-Hydrogen
bonds
-Electrostatic interactions
, -ion-dipole interactions
-Hydrophobic interactions
-Van der Waals forces
The ability to form hydrogen bonds relates to what? -
✔✔Electronegativity
O>N>S
[Only Negative Stuff lol]
Electrostatic interactions are formed between - ✔✔oppositely charged
groups
Ion-Dipole Interactions - ✔✔Between charged groups and polarized
bonds
What are carbohydrates made of? - ✔✔monosaccharides
What are the simplest sugars? - ✔✔D-glyceraldehyde (aldehyde)
COMPLETE QUESTIONS AND ANSWERS
{ GRADED A+}
What is a molecule? - ✔✔A sufficiently stable, electrically neutral group
of at least 2 atoms in a definite arrangement held together by very
strong covalent chemical bonds
What are the 6 different elements that most biomolecules contain? -
✔✔C,H,O (always), N (many), S and P (some)
What process results in bond formation? - ✔✔Condensation Reaction
Is bond formation endergonic or exergonic? - ✔✔Endergonic
Bond cleavage is an exergonic process through.. - ✔✔Hydrolysis
,Energy-Rich bonds - ✔✔Anhydride & Thioester
What is the difference between structural and positional isomers? -
✔✔Positional - all functional groups are the same, just in different
positions
Structural - functional groups are not the same
Optical Isomers - ✔✔Has at least one chiral center and differ in
orientation around same or all of the chiral centers
Geometric Isomers - ✔✔Molecules with the same functional groups but
they are arranged across rigid bonds
cis/trans
What are the different types of non-covalent bonds? - ✔✔-Hydrogen
bonds
-Electrostatic interactions
, -ion-dipole interactions
-Hydrophobic interactions
-Van der Waals forces
The ability to form hydrogen bonds relates to what? -
✔✔Electronegativity
O>N>S
[Only Negative Stuff lol]
Electrostatic interactions are formed between - ✔✔oppositely charged
groups
Ion-Dipole Interactions - ✔✔Between charged groups and polarized
bonds
What are carbohydrates made of? - ✔✔monosaccharides
What are the simplest sugars? - ✔✔D-glyceraldehyde (aldehyde)
