Types of Hormones

Review Questions

A newly discovered hormone contains four amino acids linked together. Under which chemical class would this hormone be classified?

  1. lipid-derived hormone
  2. amino acid-derived hormone
  3. peptide hormone
  4. glycoprotein

Hint:

C

Which class of hormones can diffuse through plasma membranes?

  1. lipid-derived hormones
  2. amino acid-derived hormones
  3. peptide hormones
  4. glycoprotein hormones

Hint:

A

Why are steroids able to diffuse across the plasma membrane?

  1. Their transport protein moves them through the membrane.
  2. They are amphipathic, allowing them to interact with the entire phospholipid.
  3. Cells express channels that let hormones flow down their concentration gradient into the cells.
  4. They are non-polar molecules.

Hint:

D