Question

Complete the following vocabulary exercise relating to the level of structure in proteins Match the words in the left hand column with the appropriate blank in the sentences in the right hand column. View Available Hint(s) Reset Help Primary structure describes the alpha-helices and beta-sheets that are formed by hydrogen bonding between backbone atoms located near each other in the polypeptide chain. Secondary Tertiary 2 structure is the sequence of amino acids in a protein Quaternary 3 structure is the result of two or more protein subunits assembling to form a larger biologically active protein complex structure is achieved when a protein folds into a compact, three-dimensional shape Pearson

Answer 1

The correct combination of words in the left column and the appropriate blank is as follows: 1. The protein's primary structure is its nascent form formed by amino acid bonds. A covalent bond exists. 2. The secondary structure is made up of an alpha-helix and a beta-pleated structure. Hydrogen bonding is present.

3. The most important structure is the tertiary structure, also known as the functional structure. It has a three-dimensional structure and functions as antibodies and enzymes. 4. Quaternary structure is formed by the interaction of two or more proteins.

Proteins are organic compounds composed of multiple amino acid chains. Protein structures are classified into four types: primary, secondary, tertiary, and quaternary. Thus, the correct structures are primary, secondary, tertiary, and quaternary.

Proteins are large, complex molecules that perform numerous important functions in the body. They are required for the structure, function, and regulation of the body's tissues and organs and do the majority of the work in cells. Protein can be found in muscle, bone, skin, hair, and virtually every other body part or tissue.

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