Which of the following is a steroid hormone?
1. Progesterone
2. Cholesterol
3. ACTH
4. Adrenaline
Which one of the following hormones is a modified amino acid?
1. Progesterone
2. Prostaglandin
3. Estrogen
4. Epinephrine
Chemically hormones are:
1. Proteins, steroids & biogenic amines
2. Proteins only
3. Steroids only
4. Biogenic amines only