객관식
Hydrophobic effects play a major role in the formation of which level of protein structure?
169
views
4. Protein Structure
Protein Folding
객관식
Which of the following correctly represents the number of levels of protein structure involved in protein folding?
A
Three: primary, secondary, and tertiary
B
Five: primary, secondary, tertiary, quaternary, and quinary
C
Two: primary and secondary
D
Four: primary, secondary, tertiary, and quaternary
검증된 단계별 안내1
Understand the concept of protein structure levels: Proteins have hierarchical levels of structure that determine their shape and function. These levels are primary, secondary, tertiary, and quaternary.
Define each level of protein structure: Primary structure refers to the sequence of amino acids in the polypeptide chain. Secondary structure involves local folding patterns such as alpha-helices and beta-sheets, stabilized by hydrogen bonds. Tertiary structure is the overall 3D shape of a single polypeptide chain, influenced by interactions like hydrophobic effects, ionic bonds, and disulfide bridges. Quaternary structure refers to the arrangement of multiple polypeptide chains into a functional protein complex.
Recognize that protein folding involves all four levels of structure: Protein folding starts with the primary sequence and progresses through secondary and tertiary structures, sometimes culminating in quaternary structure for multi-subunit proteins.
Eliminate incorrect options: The option 'Three: primary, secondary, and tertiary' excludes quaternary structure, which is essential for proteins with multiple subunits. The option 'Five: primary, secondary, tertiary, quaternary, and quinary' introduces a non-existent 'quinary' level. The option 'Two: primary and secondary' ignores tertiary and quaternary structures, which are critical for functional folding.
Conclude that the correct answer is 'Four: primary, secondary, tertiary, and quaternary,' as these are the established levels of protein structure involved in folding.
관련 영상
관련 실천
