Biochemistry Lab Quiz - Carbohydrates
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Questions and Answers

What are some sources of carbohydrates in your diet?

potatoes, bread, pasta and rice

What does the D in D-glucose mean?

the orientation of the hydroxyl group on the chiral carbon that's farthest from the carbonyl group at the top of the chain

What is the bond that links monosaccharides in di- and polysaccharides?

glycosidic bonds

What is a peptide bond?

<p>a bond between carboxylic acid of 1 amino acid and the amino group of the next amino acid with the loss of H2O</p> Signup and view all the answers

Primary structure refers to bonds that join one amino acid to the next, while secondary structure includes the _____ formed by the coiling of the peptide chain.

<p>alpha helix</p> Signup and view all the answers

Primary structure refers to bonds that join one amino acid to the next, while secondary structure includes the alpha helix formed by the coiling of peptide chain or a _____ structure formed between protein strands.

<p>beta pleated sheet</p> Signup and view all the answers

Study Notes

Carbohydrates

  • Common dietary sources of carbohydrates include potatoes, bread, pasta, and rice.
  • Carbohydrates are essential macronutrients providing energy.

D-Glucose

  • The "D" in D-glucose indicates the orientation of the hydroxyl group on the chiral carbon that is furthest from the carbonyl group in the molecule's chain.
  • It plays a crucial role in distinguishing glucose forms.

Glycosidic Bonds

  • Monosaccharides are linked together in di- and polysaccharides via glycosidic bonds.
  • These bonds are essential for forming complex carbohydrates from simple sugars.

Peptide Bonds

  • A peptide bond connects the carboxylic acid group of one amino acid to the amino group of another, resulting in the release of a water molecule (H2O).
  • This bond is fundamental in protein synthesis, forming the backbone of protein chains.

Protein Structures

  • The primary structure of proteins involves the linear sequence of amino acids connected by peptide bonds.
  • The secondary structure consists of the coiling (alpha helix) or folding (beta pleated sheet) of the peptide chain, which contributes to the protein’s overall shape and functionality.

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Description

Test your knowledge on key concepts related to carbohydrates with this pre-lab flashcard quiz. Explore sources of carbohydrates, the meaning of D in D-glucose, and the types of bonds that connect monosaccharides. Perfect for biochemistry students preparing for lab work.

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