Multiple choice Which of the following are globular proteins? Insulin Visual purple Myosin Collagen Keratin Thrombin 1, 2 and 3 1, 2 and 6 2, 3 and 5 2, 4 and 6 4, 5 and 6 Reveal answer Fill a bubble to check yourself B Correct answer Explanation This option is correct because insulin, visual purple and thrombin are all globular proteins.