Question

question 8
match each level of protein organization with the correct description
primary choose
secondary choose
tertiary
quaternary
a - helix and β - pleated sheets form as a result from hydrogen bonding involving the backbone
3 - d structure resulting from two or more polypeptide chains interacting in specific ways to form a biologically active molecule
the amino acid sequence
overall 3 - d shape of an individual polypeptide chain that is determined by interactions among r groups of the same polypeptide chain
question 9
which organic compound is not provide thermal insulation?
nucleic acids
proteins
lipids
carbohydrates

Explanation:

• Primary structure of a protein is defined by the linear sequence of amino - acids.
• Secondary structure involves hydrogen - bonding of the backbone to form structures like α - helix and β - pleated sheets.
• Tertiary structure is the overall 3 - D shape of an individual polypeptide chain, determined by R - group interactions within the same chain.
• Quaternary structure results from the interaction of two or more polypeptide chains to form a functional protein.

Answer:

Primary: The amino acid sequence
Secondary: α - helix and β - pleated sheets form as a result from hydrogen bonding involving the backbone
Tertiary: Overall 3 - D shape of an individual polypeptide chain that is determined by interactions among R groups of the same polypeptide chain
Quaternary: 3 - D structure resulting from two or more polypeptide chains interacting in specific ways to form a biologically active molecule