BIOD 121 Portage module 2 question with complete solution 2023

BIOD 121 Portage module 2 question with complete solution 2023protein digestion - correct answer 1. cooking 2. pepsin (in stomach) 3. cholecystokinin -CCK (small intestine) - travels to pancreas, releases trypsin back to SI 4. trypsin - breaks peptide chains 5. amino acids absorbed through portal vein to liver digestion - correct answer transforming food into basic nutrients that can be absorbed and used by the body sensory stimuli before digestion - correct answer cognition sound odor appearance taste peristalsis - correct answer Involuntary waves of muscle contraction that keep food moving along in one direction through the digestive system. digestive enzymes - correct answer catalyze the chemical reactions required to break down food particles into smaller parts, which prepares the nutrients for absorption mucosa - correct answer intestinal wall, innermost layer circular and longitudinal muscles - correct answer mix and move food along the GI tract passive diffusion - correct answer substances move without energy high to low concentration facilitated diffusion - correct answer special protein carrier is required to help substances cross in or out of the cell high to low concentration active transport - correct answer requires energy low to high concentration GI tract 6 main parts - correct answer 1 - mouth 2 - esophagus 3 - stomach 4 - small intestine 5 - large intestine 6 - rectum GI tract accessory organs - correct answer salivary glands, liver, gallbladder, pancreas mouth - correct answer alter food particles for swallowing mechanical and chemical digestion saliva - correct answer mucus plus digestive enzymes mucus - correct answer lubricates food particles for swallowing salivary amylase - correct answer Enzyme in saliva that breaks down starch lingual lipase - correct answer a fat-splitting enzyme secreted by cells at the base of the tongue esophagus - correct answer transports food to the stomach epiglottis - correct answer a flap of cartilage that covers the trachea while swallowing sphincter muscle - correct answer circular muscle at the end of esophagus, prevents backflow of food stomach - correct answer 4 cup capacity holds food 2-4 hrs until ready to pass into the small intestine store, mix, dissolve, and continue the digestion of food gastric juice - correct answer The acidic secretion of the stomach prepares proteins for digestion and activates enzymes pepsin - correct answer An enzyme present in gastric juice that breaks down proteins gastric lipase - correct answer enzyme to digest fat