Mark your test as the answer key. Though somewhat uncommon, some Scantron forms have a space where you can mark that the form you're filling out is either a test or the answer key. If your teacher made an epic mistake of using one of these forms, exploit it and mark yours as the key.ow to Cheat on a Scantron Test. Three Methods: Messing With the Bubbles Messing With the Lines on the Form Cheating the Old Fashioned Way. Test scoring machines scan testing forms to mark incorrect answers wrong.
Snakes breathe principally by contracting muscles between their ribs. Unlike mammals, they lack a diaphragm, the large smooth muscle responsible for inspiration and expiration between the chest and abdomen. Inspiration is an active process (muscles contract), whereas expiration is passive (muscles relax).
The mechanism of taking air into the lungs is however sligthly different than in humans. Frogs do not have ribs nor a diaphragm, which in humans helps serve in expand the chest and thereby decreasing the pressure in the lungs allowing outside air to flow in.In order to draw air into its mouth the frog lowers the floor of its mouth, which causes the throat to expand.rogs also have a respiratory surface on the lining of their mouth on which gas exchange takes place readily. While at rest, this process is their predominate form of breathing, only fills the lungs occasionally.