Draw the Fisher projections of any two amino acids

Fischer projection is 2D representation of a 3D molecule. Threonine and alanine are two amino acids whose Fischer projections are shown.
draw fisher projections for both the D and L isomers of the
following
12 Identify each of the following as a D or an L form and draw the structural formula of the enantiomer: CHO b. a. CH,OH C=O он HOH HOH но CH,OH CH,OH 3 Draw Fischer projections for both the D and L isomers of the following a. 2,3-dihydroxypropanoic acid b. 2-chloro-3-hydroxypropanoic acid Draw Fischer projections for both the D and L somers of the following amino acids:...
For a pair of diastereomers for this compound, please draw the
Fisher Projections. (Please draw one of the original molecule, and
one of the diastereomer.
H3C H3C CH3 CH3 CH3
Answer questions 7-8 please !
Draw a picture of two amino acids coming together to make a dipeptide. You may choose any two amino acids you like. Circle the peptide bond. What molecule is necessary to break a peptide bond?
Draw any tripeptide without repeating any of the amino acids (For example, you can draw Arg-Lys-His but not Arg-Arg-His). Label the tripeptide chain with its three- and one-letter codes.
Using Fisher projections draw all stereomers of the compound below. Label each chiral center as R or S.
Two identical proteins are synthesized chemically,one with D-amino acids and the other with L-amino acids,that produce purely a-helical structures. Draw their respective CD(circular dichroism) spectra.
Draw a peptide of two or more different amino acids. Circle the R group of each amino acid. Put a box around each peptide bond. Identify each amino acid with the one-letter code.
9. Using Fisher projections, draw all of the possible stereoisomers for 3,4- difluorohexane. For each stereoisomer, determine the absolute configuration for each stereogenic carbon. Then, determine the relationship between each set of stereoisomers. (25 points)
Name and draw two amino acids, one that is a hydrogen bond donor as a side chain and one that is hydrogen bond acceptor as a side chain.
7.Draw the basic structure of an amino acid dimer (two amino acids bound together); label an amine, carboxyl, side chainand peptide bond. 8.Define primary and tertiary protein structure. How does the tertiary structure depend on the primary structure?