Select all possible structures of peptide hormones.Multiple select question.Modified amino acidsGlycoproteinsProteinsModified nucleic acidsSteroids

Breakdown of the Problem

We need to identify which of the provided options are possible structures of peptide hormones. This requires understanding the nature and composition of peptide hormones.

Relevant Concepts

1. Peptide Hormones: These are hormones composed of amino acids linked together by peptide bonds. They can be simple peptides or larger proteins and may include modified forms of amino acids.
2. Modified Amino Acids: These are amino acids that have undergone chemical modifications, which can occur in certain peptide hormones.
3. Glycoproteins: These are proteins that have sugar moieties attached. Some peptide hormones can be glycoproteins (like follicle-stimulating hormone).
4. Proteins: Peptide hormones themselves can be classified as proteins if they consist of long chains of amino acids.
5. Modified Nucleic Acids: These are not related to peptide hormones.
6. Steroids: While important in hormone function, steroids are derived from lipids, not peptides.

Analysis and Detail

1. Modified Amino Acids: Certain peptide hormones, like thyroxin, utilize modified amino acids.
2. Glycoproteins: Certain peptide hormones are indeed glycoproteins (e.g., LH, FSH).
3. Proteins: Many peptide hormones are classified as proteins due to their chain length and complexity (e.g., insulin).
4. Modified Nucleic Acids: These do not relate to peptide hormones.
5. Steroids: These are a different class of hormones entirely, distinct from peptide hormones.

Verify and Summarize

From the analysis, the relevant structures of peptide hormones from the provided options are modified amino acids, glycoproteins, and proteins. Modified nucleic acids and steroids do not qualify.

Final Answer

The possible structures of peptide hormones are:

1. Modified Amino Acids
2. Glycoproteins
3. Proteins