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How many times does a heart pump per 1 minute?


Describe and compare the metabolism of carbohydrates, lipids and proteins and in your
answer, explain the role of AT
Describe the principles behind five (5) laboratory techniques used in the isolation and
analysis of proteins
Give the full name, the 3-letter and 1-letter abbreviation of the following polypeptide.
Indicate the amino acid on the N- and the C-terminus of the structure.
Describe the structural characteristics that are common to all the amino acids that are
found in mammalian proteins and draw the structure of the tripeptide Tyr-Thr-Trp in the
ionic form that predominates at pH 7. Show all atoms (including hydrogens) as well as
any charges as necessary. Explain the general features of amino acid side chains and
the importance of associated non-covalent interactions.

You have isolated several E. coli mutants: Mutant #1 has a point mutation in the -10 region of the promoter of a structural gene encoding an enzyme needed for synthesis of the amino acid serine. Mutant #2 has a mutation in the -35 region in the promoter of the same gene. Mutant #3 is a double mutant with mutations in both the -10 and -35 region of the promoter of the same gene. Only Mutant #3 is unable to make serine. Why do you think this is so?


You have isolated several E. coli mutants: Mutant #1 has a point mutation in the -10 region of the promoter of a structural gene encoding an enzyme needed for synthesis of the amino acid serine. Mutant #2 has a mutation in the -35 region in the promoter of the same gene. Mutant #3 is a double mutant with mutations in both the -10 and -35 region of the promoter of the same gene. Only Mutant #3 is unable to make serine. Why do you think this is so?

Describe how Herophilus discoveries are connected with organ systems?


significance of the structure of fatty acids on the solubility of lipids


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