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UNE Biochemistry Week 1 Exam Questions and Answers 100% Pass
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UNE Biochemistry Week 1 Exam Questions and Answers 100% Pass primary structure - linear sequence of amino acids in polypeptide chain amino terminus (N-terminus) to the carboxyl terminus (C-terminus) - primary structures are written from the _______________ to the ______________ alpha helices, ...

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  • January 8, 2025
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  • 2024/2025
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  • une biochemistry week 1 exam questions and answers

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UNE Biochemistry Week 1 Exam
Questions and Answers 100% Pass

primary structure - ✔✔linear sequence of amino acids in polypeptide chain


amino terminus (N-terminus) to the carboxyl terminus (C-terminus) - ✔✔primary structures are written

from the _______________ to the ______________


alpha helices, beta pleated sheets, and bends/turns/or loops - ✔✔what are the types of secondary

structures


alpha helix (secondary structure) - ✔✔formed when the carbonyl group of peptide bond forms a

hydrogen bond with the amide nitrogen of another peptide bond four amino acids down the polypeptide

chain (what kind of structure is this?)


the peptide backbone is formed by hydrogen bonds (alpha helix structure) - ✔✔the ________ _______ is

formed by __________ ___________ between each carbonyl oxygen atom and the amide hydrogen located

4 residues down the chain. This unique bonding sequence results in a structure that is highly compact

and rigid.


alpha helices - ✔✔comprises about a third of all secondary structures


proline and "kink" - ✔✔____ is not typically found in these structures as it forms a non-traditional peptide

bond and adds a "___" in the helix


beta sheets are formed when beta strands are connected laterally (etc.) - ✔✔are formed when _______

strands are connected laterally by at least two or three backbone hydrogen bonds




EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 1

, hydrogen bonds and NH groups - ✔✔the beta strands are connected horizontally by ___________ bonds

formed between C=O groups of either strand and _____ groups of either strand


R groups - ✔✔the _____ ________ always protrude to the top or bottom


hydrophilic and a hydrophobic side - ✔✔depending on the R groups on the sides of the beta, the sheet

may have a ________ and a _________ side.


exposed on the surface of the protein to the polar H2O solvent - ✔✔for beta pleated sheets that have two

sides, the hydrophilic side will be exposed where and to what?


will be buried in the protein and only RARELY exposed to the polar H2O solvent - ✔✔for beta pleated

sheets that have two sides, the hydrophobic side will be where? is it ever exposed to the H2O solvent?


supersecondary structures - ✔✔tertiary structures can also be called what?


tertiary structure - ✔✔the total 3D conformation of an entire polypeptide chain including interactions

between alpha-helices, beta-sheets, and any other loops, turns, or bends


bends, turns, or loops - ✔✔short stretches/areas of the polypeptide chain form these structures that are

stabilized by hydrogen bonds (these are not random)


rossman fold - ✔✔give an example of a tertiary structure


structural domains - ✔✔defined as a section of protein sufficient to perform a particular chemical or

physical task


domains - ✔✔defined regions with specific function that are conserved in function and sequence across

other proteins


motifs - ✔✔common arrangements of secondary structures to generate a tertiary arrangement




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