Nucleotides
Four nucleotides are needed to make a DNA molecule.
Four nucleotide subunits are needed to make a DNA molecule: adenine (A), thymine (T), cytosine (C), and guanine (G). These nucleotides form complementary base pairs (A-T and C-G) that allow DNA to replicate and encode genetic information.
iron and protein
A polymer is a large molecule made up of identical or similar subunits linked together. Examples of polymers include proteins, DNA, and carbohydrates.
The smaller subunits that make up a molecule are called atoms. Atoms are the basic building blocks of matter and can combine in various ways to form molecules. In larger biological molecules, such as proteins, nucleic acids, and carbohydrates, these subunits can be further categorized; for example, amino acids make up proteins, while nucleotides make up nucleic acids like DNA and RNA.
The subunits that make up DNA are called nucleotides. Each nucleotide consists of a sugar molecule, a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, or guanine).
Two monosaccharides are needed to form one maltose molecule. Specifically, maltose is comprised of two glucose molecules joined together through a condensation reaction, which releases a molecule of water.
Hemoglobin contain iron.
Water. H2O is where the hydrogen comes from to build the C6H12O6 molecule.
The subunits making up nucleic acids are nucleotides
The repeating subunits of DNA and RNA are called nucleotides. Nucleotides are composed of a phosphate group, a sugar molecule (deoxyribose in DNA and ribose in RNA), and a nitrogenous base (Adenine, Thymine, Cytosine, and Guanine in DNA; Uracil replaces Thymine in RNA).
nucleotides
Proteins are composed of amino acids. These amino acids are joined together by peptide bonds where the -COOH group and the -NH2 group of two consecutive amino acids bond with the loss of a water molecule. The sequence of the amino acids make up the primary structure of the protein.