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Test your basic knowledge |
PCAT Biology Digestion
Start Test
Study First
Subjects
:
pcat
,
biology
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Produced by the pancreas to digest carbohydrates
Amylase
Esophagus
Gastrin
Saliva
2. Vessels of the lymphatic system
Villi
Lacteals
GERD
Pancreas
3. Lacking lactase enzyme
GERD
Rectum
Lactose-Intolerant
Pepsi
4. The muscular tube leading from the mouth to the stomach
Esophagus
Chemical Breakdown
Salivary Amylase (ptyalin)
Lipase
5. Secreted from the intestinal mucosa for polypeptide digestion
Esophagus
Heterotrophic
Aminopeptidase
GERD
6. Secretes two substances: intrinsic factor and hydrchloric acid
Parietal Cell
Salivary Amylase (ptyalin)
Physical Breakdown
Intestine (in annelids)
7. Secreted from intestinal mucos for digestion of lactose
Lactase
GERD
Intestine (in annelids)
Salivary Amylase (ptyalin)
8. Unable to synthesize their own nutrients
Intrinsic factor
Pepsinogen
Heterotrophic
Lipase
9. Secreted by the stomach that is a protein-hydrloyzing enzyme - and hydrochloric acd - which kills bacteria - dissolves the intercellular 'glue' holding food tissues together - and activates certain proteins
Mechanical Digestion
Pepsi
Gizzard (in annelids)
GERD
10. Contains a typholosole to provide increased surface area for digestiona nd absorption
Tentacles
Intestine (in annelids)
Esophagus
Chemical Breakdown
11. Lubricates food to facilitate swallowing and provides a solvent for food particles =secreted in response toa nervous reflex triggered by the presence of food in the oral cavity
Villi
Peristalsis
Saliva
Endodermal Cells
12. Begins with oral cavity and continues with the pharynx - the esophagus - stomach - small inestine - large intestive - then anus
Chyme
Arthropods
Human Digestive Tract
Parietal Cell
13. Produces enzymes such as amylase - trypsin - lipase
Pancreas
Annelids/Earthworms
Aminopeptidase
Pepsinogen
14. Patients usually have a decreased lower esophageal reflux pressure - leading to an increased passage of stomach contents into the esophagus
GERD
Trypsin
Lysosomes
Chyme
15. Provides for transient storage of feces before elimination through the anus
Rectum
Mucus
Lipase
Villi
16. Stimulates the parietal cells to produce a substance (HCl) that denatures proteins and activates digestive enzymes
Chemical Digestion
Lysosomes
Gastrin
Mechanical Digestion
17. Degradation of large molecules into smaller molecules that can be absorbed into the bloodstream and used directly by cells
Digestion
Mucus
Trypsin
Gastrin
18. (Insects) have a digestive system similar to that of the earthworm
Arthropods
Annelids/Earthworms
Villi
Pepsinogen
19. Enzyme in saliva which hydrolyzes starch to maltose
Salivary Amylase (ptyalin)
Intrinsic factor
Annelids/Earthworms
Oral Cavity
20. Emulsifies fats - breaking down large globules into small droplets (contains no enzymes)
Human Digestive Tract
Small Intestine
Bile
Phagocytosis
21. Line the gastrovascular cavity secrete enzymes into the cavity
Arthropods
Amylase
Gizzard (in annelids)
Endodermal Cells
22. The breakdown of large food particles into smaller particles through mastication
Crop (in annelids)
Chyme
Mechanical Digestion
Physical Breakdown
23. When nutrients are required for plants - the storage polymers are broken down to simpler molecules by enzyme hydrolysis
Aminopeptidase
Intracellular Digestion
Venus flytrap
Rhizoids
24. Completes chemical digestion -divided into three section: duodenum - jejunum - and the ileum -highly adapted to absorption
GERD
Gastrin
Tentacles
Small Intestine
25. A typical saprophyte that lives on dead organic material - that secrete enzymes into the external environment (on bread)
Rhizoids
Phagocytosis
Endodermal Cells
Pepsi
26. A large - muscular organ located in the upper abdomen - stores and partially digests food
Lactase
Mucus
Stomach
Small Intestine
27. Can occur after spontaneous transient lower esophageal sphincter relaxations not associated with swallowing
Lactose-Intolerant
Aminopeptidase
GERD
Annelids/Earthworms
28. Secreted from intestinal mucosa for digestion of maltose - lactose - sucrose
Disacchaidases
GERD
Intestine (in annelids)
Parietal Cell
29. Synthesized and stored in the S cells of the upper intestine -stimulates the secretion of bicarbonate-containing substances from the pancreas and inhibits gastric emptying and gastric acid production
Secretin
Lactase
Gizzard (in annelids)
Peristalsis
30. Food is moved down the esophagus by this rhythmic waves of involuntary muscular contraction
Lysosomes
Pepsinogen
Peristalsis
Gizzard (in annelids)
31. Enzymes are secreted - hydrolyzing complex nutrients into simpler molecules - which are then absorbed
Lactose-Intolerant
Human Digestive Tract
Extracellular Digestion
Mucus
32. Produced by the pancreas for protein digestion
Rectum
Tentacles
Trypsin
GERD
33. Place to store food
Crop (in annelids)
Rhizoids
Chyme
Salivary Glands
34. Biting and chewing action of teeth
Intestine (in annelids)
Endodermal Cells
Intracellular Digestion
Mastication
35. Fuse with the food vacuole and release their digestive enzymes that act upon the nutrients
Intestine (in annelids)
Lysosomes
Rectum
Phagocytosis
36. Produced and stored in the I cells of the duodenal and jejunal mucosa
Gastrin
Venus flytrap
Chemical Digestion
Cholecystokinin
37. Enzymes are secreted to digest the fly and absorb the soluble end products
Lysosomes
Venus flytrap
Salivary Amylase (ptyalin)
Stomach
38. Secreted from the intestinal mucosa for fat digestion
Extracellular Digestion
Tentacles
Cnidarians/ Hydras
Lipase
39. Refers to a digestive process that occurs outside of the cell - within a lumen or tract
Chyme
Extracellular Digestion
Large Intestine
Arthropods
40. Have one way digestive tract with both a mouth and an anus
Annelids/Earthworms
Mucus
Chemical Breakdown
Extracellular Digestion
41. Produced by the pancreas for fat digestion
Lipase
Chyme
Salivary Glands
Villi
42. Accomplished by enzymatic hydrolysis -nutrients pass through the semipermeable plasma membrane of the gut cells to be further metabolized or transported
Chemical Breakdown
Extracellular Digestion
Intracellular Digestion
Annelids/Earthworms
43. Restin pressures of the lower esophageal sphincter normally range from 15-35mmHg above gastric baseline pressure
Amylase
GERD
Salivary Amylase (ptyalin)
Liver
44. Pseudopods surround and engulf food and enclose it in food vacuoles
Phagocytosis
Cnidarians/ Hydras
Mucus
Secretin
45. Where mechanical and chemical digestion of food begins
Oral Cavity
Venus flytrap
Salivary Glands
Small Intestine
46. To grind the food
Physical Breakdown
Gizzard (in annelids)
Arthropods
Amylase
47. Refers to the enzymatic breakdown of macromolecules into smaller molecules and begins in the mouth when the salivary glands secrete saliva
Villi
Mastication
Chemical Digestion
Chyme
48. Produces bile in the gall bladder before release into the small intestine
Mucus
Gizzard (in annelids)
Liver
Chyme
49. An acidic - semifluid mixture of partially digested food produced from the churning of the stomach
Chyme
Pepsinogen
Oral Cavity
Mechanical Digestion
50. Decreased lower esophageal sphincter pressure is not always associated with the development of GERD; however - the majority of patients
Chyme
Pepsi
GERD
Venus flytrap