BIOCHEM MIDTERM EXAM. ALL MIDTERM EXAM REVISION QUESTIONS AND CORRECT ANSWERS (GRADED A+) (100% GUARANTEE) (2024 UPDATE)
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Course
Biochem
Institution
Biochem
Amino acids are linked together by peptide bond between the _____ group of one amino acid and
the ____ group of another amino acid - ANSWER- carbon of carboxyl...nitrogen of the amino
Fibrous proteins are water-insoluble. Due to this characteristic which fibrous protein function in
organisms is ...
Amino acids are linked together by peptide bond between the _____ group of one amino acid and
the ____ group of another amino acid - ANSWER- carbon of carboxyl...nitrogen of the amino
Fibrous proteins are water-insoluble. Due to this characteristic which fibrous protein function in
organisms is correct? - ANSWER- structural
It is an amino acid present in milk that helps induce sleep. This fact is the source of an urban myth
that drinking a glass of warm milk at bedtime makes us fall asleep. - ANSWER- Tryptophan
Which amino acids are shown by tripeptide below? - ANSWER-
What amino acids are bonded by peptide bonds in the illustration that follows? - ANSWER-
Cysteine and Tyrosine
What makes amino acid Glycine polar? - ANSWER- amino & carboyxl groups
What is the closest ph of each of the several amino acids when it has almost equal or the same
positive and negative charges? - ANSWER- ph 7
At ph 10 or higher what is the net electrical charge of the majority of the amino acids? - ANSWER-
-1
Where is amino acid's side chain bonded to? - ANSWER- alpha carbon
, Adult hemoglobin has 2 alpha chains of 141 amino acids each and 2 beta chains of 146 amino
acids each. How many amino acids are there in adult hemoglobin molecule? - ANSWER- 574
What makes the 20 amino acids different from one another ? - ANSWER- side chain
The tertiary structure of the protein is stabilized in 4 ways. What one does not stabilize protein
molecules? - ANSWER- metallic bond
How can we differentiate between the normal and mutant protein in the lab? - ANSWER-
dissolve both sample proteins in water. Normal protein dissolves while mutant or variant does not.
Which amino acids have 0 net charge when their ph is around or too close ph 10 - ANSWER-
Certain bacterial enzyme is more active in a temperature range of 39 degrees-41 degrees which
descriptions hold true about the activity of this bacterial enzyme? - ANSWER- decrease if the
patient's temperature decreases to 35 degree Celsius
Trypsin and chymotrypsin are enzymes that catalyze the hydrolysis of amide bonds in proteins.
Trypsin hydrolyzes amine bonds on the carboxyl sides of Lysine and Arginine, the basic amino
acid residues. Chymotrypsin works at amide bonds that are on the carboxyl sides of all aromatic
amino acids, such as phenylalanine, tyrosine, and tryptophan. Chymotrypsin also has a minor
reaction with other nonpolar amino acids, such as leucine and isoleucine. Which hold true of
trypsin? - ANSWER- Trypsin is more specific in its action.
Per PPT slide on enzyme kinetics, which graph achieves the maximum rate of reaction despite the
presence of inhibiting compound? - ANSWER- B
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