Hemoglobin is

a. a digestive enzyme.
b. a tiny nutrient carried in capillaries.
c. an oxygen-carrying pigment in blood.
d. part of the vertebrate nervous system.

A hemoglobin is a red protein responsible for transporting oxygen in the blood of vertebrates. Its molecule comprises four subunits, each containing an iron atom bound to a heme group.

The answer is c i just finished taking the test

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.