ACS BIOCHEMISTRY TEST BANK COMPLETE
QUESTIONS AND SOLUTIONS ALREADY
GRADED A+
●● Aromatic AA's
Answer: phe, Tyr, trp
●● What wavelength do aromatic aa's absorb light?
Answer: 280 nm
●● Polar, uncharged aa's
Answer: Ser, Thr, Cys, Asp, Glu
●● Are Disulfide bonds hydrophobic or hydrophilic?
Answer: hydrophobic
●● Polar, Positively charged (basic) aa's
Answer: Lys, Arg, His
●● Polar, negatively charged (acidic) aa's
Answer: Asp, Glu
,●● What is the pI formula?
Answer: (pK1 + pK2)/2
●● When pH is below pI what is the net charge?
Answer: positive
●● For a hydropathy index, what does it show and what does a large,
positive index indicate?
Answer: hydrophobicity, very hydrophobic
●● Naming of a polypeptide begins at which end?
Answer: the amino end
●● How much does an amino acid weigh in a peptide? by itself? What
accounts for the difference?
Answer: 110 Daltons and 128 Daltons. 18 Da of water
●● A protein with all the same subunits
Answer: homomeric
●● a protein with 2 or more difference subunits
Answer: heteromeric
,●● Non-amino acid components of a protein, tightly or covalently bound
Answer: prosthetic groups
●● Non-amino acid components of a protein, loosely bound
Answer: coenzymes
●● general name for Non-amino acid components of a protein
Answer: cofactors
●● How many molecules of ATP per molecule of glucose (after
glycolysis)?
Answer: 2
●● Glycolysis turns glucose into _____? How many?
Answer: pyruvate, 2
●● In anaerobic conditions, pyruvate undergoes which two kinds of
_______?
Answer: ethanol or lactic acid fermentation
●● In aerobic conditions, 2 pyruvate is turned into ______? How many?
By product?
, Answer: acetyl-CoA, 2, 2CO2
●● Acetyl-CoA enters the ________ and produces ____ and ____
Answer: citric acid cycle, 4CO2, 4H2O
●● Ethanol fermentation produces ____ and ____
Answer: 2 ethanol and 2 CO2
●● Lactic Acid Fermentation produces
Answer: 2 Lactate
●● During stage 1 of glycolysis, one glucose molecule is converted into
2 ____ by consuming 2 ____
Answer: GAP molecules, ATP
●● During stage 2 of glycolysis, 2 GAP molecules are converted to 2
_____ and produce a total of 4 ______ and 2 ______
Answer: pyruvate, ATP, NADH
●● Spatial arrangement of atoms in a protein in a cell in its functional
form. Stability of a protein refers to the ability to keep this form.
Answer: Native Conformation
QUESTIONS AND SOLUTIONS ALREADY
GRADED A+
●● Aromatic AA's
Answer: phe, Tyr, trp
●● What wavelength do aromatic aa's absorb light?
Answer: 280 nm
●● Polar, uncharged aa's
Answer: Ser, Thr, Cys, Asp, Glu
●● Are Disulfide bonds hydrophobic or hydrophilic?
Answer: hydrophobic
●● Polar, Positively charged (basic) aa's
Answer: Lys, Arg, His
●● Polar, negatively charged (acidic) aa's
Answer: Asp, Glu
,●● What is the pI formula?
Answer: (pK1 + pK2)/2
●● When pH is below pI what is the net charge?
Answer: positive
●● For a hydropathy index, what does it show and what does a large,
positive index indicate?
Answer: hydrophobicity, very hydrophobic
●● Naming of a polypeptide begins at which end?
Answer: the amino end
●● How much does an amino acid weigh in a peptide? by itself? What
accounts for the difference?
Answer: 110 Daltons and 128 Daltons. 18 Da of water
●● A protein with all the same subunits
Answer: homomeric
●● a protein with 2 or more difference subunits
Answer: heteromeric
,●● Non-amino acid components of a protein, tightly or covalently bound
Answer: prosthetic groups
●● Non-amino acid components of a protein, loosely bound
Answer: coenzymes
●● general name for Non-amino acid components of a protein
Answer: cofactors
●● How many molecules of ATP per molecule of glucose (after
glycolysis)?
Answer: 2
●● Glycolysis turns glucose into _____? How many?
Answer: pyruvate, 2
●● In anaerobic conditions, pyruvate undergoes which two kinds of
_______?
Answer: ethanol or lactic acid fermentation
●● In aerobic conditions, 2 pyruvate is turned into ______? How many?
By product?
, Answer: acetyl-CoA, 2, 2CO2
●● Acetyl-CoA enters the ________ and produces ____ and ____
Answer: citric acid cycle, 4CO2, 4H2O
●● Ethanol fermentation produces ____ and ____
Answer: 2 ethanol and 2 CO2
●● Lactic Acid Fermentation produces
Answer: 2 Lactate
●● During stage 1 of glycolysis, one glucose molecule is converted into
2 ____ by consuming 2 ____
Answer: GAP molecules, ATP
●● During stage 2 of glycolysis, 2 GAP molecules are converted to 2
_____ and produce a total of 4 ______ and 2 ______
Answer: pyruvate, ATP, NADH
●● Spatial arrangement of atoms in a protein in a cell in its functional
form. Stability of a protein refers to the ability to keep this form.
Answer: Native Conformation
