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Biochemistry ACS Questions and Correct Answers the Latest Update

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  • Biochemistry ACS

Nonpolar, aliphatic AA's gly, ala, pro, val, leu, ile, met Aromatic AA's phe, Tyr, trp What wavelength do aromatic aa's absorb light? 280 nm Polar, uncharged aa's Ser, Thr, Cys, Asp, Glu Are Disulfide bonds hydrophobic or hydrophilic? hydrophobic Polar, Positively charged (...

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  • October 25, 2024
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  • Biochemistry ACS
  • Biochemistry ACS
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Biochemistry ACS Questions and
Correct Answers the Latest Update
Nonpolar, aliphatic AA's

✓ gly, ala, pro, val, leu, ile, met

Aromatic AA's

✓ phe, Tyr, trp

What wavelength do aromatic aa's absorb light?

✓ 280 nm

Polar, uncharged aa's

✓ Ser, Thr, Cys, Asp, Glu

Are Disulfide bonds hydrophobic or hydrophilic?

✓ hydrophobic

Polar, Positively charged (basic) aa's

✓ Lys, Arg, His

Polar, negatively charged (acidic) aa's

✓ Asp, Glu

What is the pI formula?

✓ (pK1 + pK2)/2

When pH is below pI what is the net charge?


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✓ positive

For a hydropathy index, what does it show and what does a large, positive index

indicate?

✓ hydrophobicity, very hydrophobic

Naming of a polypeptide begins at which end?

✓ the amino end

How much does an amino acid weigh in a peptide? by itself? What accounts for

the difference?

✓ 110 Daltons and 128 Daltons. 18 Da of water

A protein with all the same subunits

✓ homomeric

a protein with 2 or more difference subunits

✓ heteromeric

Non-amino acid components of a protein, tightly or covalently bound

✓ prosthetic groups

Non-amino acid components of a protein, loosely bound

✓ coenzymes

general name for Non-amino acid components of a protein

✓ cofactors

How many molecules of ATP per molecule of glucose (after glycolysis)?


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✓ 2

Glycolysis turns glucose into _____? How many?

✓ pyruvate, 2

In anaerobic conditions, pyruvate undergoes which two kinds of _______?

✓ ethanol or lactic acid fermentation

In aerobic conditions, 2 pyruvate is turned into ______? How many? By product?

✓ acetyl-CoA, 2, 2CO2

Acetyl-CoA enters the ________ and produces ____ and ____

✓ citric acid cycle, 4CO2, 4H2O

Ethanol fermentation produces ____ and ____

✓ 2 ethanol and 2 CO2

Lactic Acid Fermentation produces

✓ 2 Lactate

During stage 1 of glycolysis, one glucose molecule is converted into 2 ____ by

consuming 2 ____

✓ GAP molecules, ATP

During stage 2 of glycolysis, 2 GAP molecules are converted to 2 _____ and

produce a total of 4 ______ and 2 ______




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