Question

hemoglobin is a protein in red blood cells. keratin is a protein in skin, hair, and nails. which statement best explains the structure and function of these two proteins? a they both have similar functions and are both made of dna structures. b they have different functions and are made from different dna segments but are both composed of amino acids. c they have different functions, and hemoglobin is made of dna structures while keratin is made of rna structures. d they both have similar functions and are made from the same dna segments, but they are composed of different amino acids.

Explanation:

Hemoglobin and keratin have different functions - hemoglobin transports oxygen in red - blood cells, while keratin provides structural support in skin, hair, and nails. They are made from different DNA segments as different genes code for different proteins. Both are composed of amino acids as all proteins are made up of amino - acid building blocks.

Answer:

B. They have different functions and are made from different DNA segments but are both composed of amino acids.