The Keychain consolidates various passwords and passphrases in one place and makes them accessible through a master password or passphrase. When an application (including the Finder) needs to access a password stored in the Keychain, the application asks you to unlock the Keychain if it's not already open.
Nutritional Summary: There are 345 calories in a 100g serving of Tesco Plain Flour. Calorie Breakdown: 3% fat, 84% carbs, 12% prot.
  Standard-grade flour makes weaker dough and suitable for cakes and biscuits (contains approx. 10% protein); high-grade flour makes stronger dough and suitable for bread â¦ and general baking (contains approx 11% protein).