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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. An acidic - semifluid mixture of partially digested food produced from the churning of the stomach
Chemical Breakdown
Chyme
Gastrin
Liver
2. Completes chemical digestion -divided into three section: duodenum - jejunum - and the ileum -highly adapted to absorption
Chemical Breakdown
Small Intestine
GERD
Intrinsic factor
3. Unable to synthesize their own nutrients
Intrinsic factor
GERD
Villi
Heterotrophic
4. Have one way digestive tract with both a mouth and an anus
Annelids/Earthworms
Cnidarians/ Hydras
Rectum
Oral Cavity
5. The breakdown of large food particles into smaller particles through mastication
Endodermal Cells
Mechanical Digestion
Pancreas
Aminopeptidase
6. Finger like projections that extend out of the intestinal wall -contain capillaries and lacteals
Esophagus
Arthropods
Villi
Disacchaidases
7. Contains a typholosole to provide increased surface area for digestiona nd absorption
Intestine (in annelids)
Lacteals
Gastrin
Extracellular Digestion
8. A typical saprophyte that lives on dead organic material - that secrete enzymes into the external environment (on bread)
Peristalsis
Salivary Amylase (ptyalin)
Amylase
Rhizoids
9. Secreted from intestinal mucos for digestion of lactose
Heterotrophic
Lacteals
Lactase
Stomach
10. Produced by the pancreas for protein digestion
Intracellular Digestion
Intrinsic factor
Rectum
Trypsin
11. Enzymes are secreted - hydrolyzing complex nutrients into simpler molecules - which are then absorbed
Lactose-Intolerant
Extracellular Digestion
Physical Breakdown
Digestion
12. Place to store food
Small Intestine
Intracellular Digestion
Crop (in annelids)
Salivary Amylase (ptyalin)
13. Secreted by the glands of the stomach which protects the stomach lining from the harshly acidic juices present in the stomach
Mucus
Chemical Digestion
Amylase
Endodermal Cells
14. Accomplished by enzymatic hydrolysis -nutrients pass through the semipermeable plasma membrane of the gut cells to be further metabolized or transported
Cholecystokinin
Chemical Breakdown
Lysosomes
Oral Cavity
15. Large particles of food into small particles begins by cutting and grinding in the mouth and churning in the digestive tract
Pepsi
GERD
Intracellular Digestion
Physical Breakdown
16. Provides for transient storage of feces before elimination through the anus
Salivary Glands
Pepsi
Rectum
Trypsin
17. The muscular tube leading from the mouth to the stomach
Arthropods
Salivary Amylase (ptyalin)
Gastrin
Esophagus
18. Secretion of the parietal cells that facilitates the absorption of vitamin b12 across the intestinal lining
Intrinsic factor
Intracellular Digestion
Tentacles
Crop (in annelids)
19. Fuse with the food vacuole and release their digestive enzymes that act upon the nutrients
Lysosomes
Parietal Cell
Mucus
Lipase
20. Food is moved down the esophagus by this rhythmic waves of involuntary muscular contraction
Arthropods
Pancreas
Peristalsis
Cnidarians/ Hydras
21. Line the gastrovascular cavity secrete enzymes into the cavity
GERD
Endodermal Cells
Large Intestine
Pepsinogen
22. 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
Pepsi
Stomach
Human Digestive Tract
Tentacles
23. Secreted from the intestinal mucosa for polypeptide digestion
Aminopeptidase
Intracellular Digestion
Cnidarians/ Hydras
Extracellular Digestion
24. Vessels of the lymphatic system
Lacteals
Cnidarians/ Hydras
Tentacles
Chemical Breakdown
25. Begins with oral cavity and continues with the pharynx - the esophagus - stomach - small inestine - large intestive - then anus
Chemical Digestion
Rhizoids
Phagocytosis
Human Digestive Tract
26. Patients usually have a decreased lower esophageal reflux pressure - leading to an increased passage of stomach contents into the esophagus
GERD
Intrinsic factor
Intracellular Digestion
Salivary Amylase (ptyalin)
27. Uses intracellular and extracellular digestion
Cnidarians/ Hydras
Small Intestine
Rhizoids
Liver
28. Pseudopods surround and engulf food and enclose it in food vacuoles
Pepsinogen
Villi
Phagocytosis
Esophagus
29. Where mechanical and chemical digestion of food begins
Lysosomes
Amylase
Oral Cavity
Tentacles
30. 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
Rhizoids
Pepsinogen
Intracellular Digestion
31. Produces enzymes such as amylase - trypsin - lipase
Trypsin
Liver
Pancreas
Physical Breakdown
32. Restin pressures of the lower esophageal sphincter normally range from 15-35mmHg above gastric baseline pressure
GERD
Lipase
Peristalsis
Trypsin
33. Bring food to the mouth (ingestion) and release the particles intoa cup-like sac
Tentacles
Salivary Glands
Disacchaidases
Arthropods
34. Stimulates the parietal cells to produce a substance (HCl) that denatures proteins and activates digestive enzymes
GERD
Bile
Gastrin
Parietal Cell
35. Decreased lower esophageal sphincter pressure is not always associated with the development of GERD; however - the majority of patients
Lipase
Rhizoids
Intracellular Digestion
GERD
36. A large - muscular organ located in the upper abdomen - stores and partially digests food
Disacchaidases
Salivary Amylase (ptyalin)
Stomach
Human Digestive Tract
37. Emulsifies fats - breaking down large globules into small droplets (contains no enzymes)
Chemical Breakdown
Bile
Aminopeptidase
Secretin
38. When nutrients are required for plants - the storage polymers are broken down to simpler molecules by enzyme hydrolysis
Lacteals
Lactose-Intolerant
Intracellular Digestion
GERD
39. Produced by the pancreas for fat digestion
Cnidarians/ Hydras
GERD
Trypsin
Lipase
40. (Insects) have a digestive system similar to that of the earthworm
Arthropods
Tentacles
Chyme
Lacteals
41. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine
Heterotrophic
GERD
Large Intestine
Venus flytrap
42. Secreted from intestinal mucosa for digestion of maltose - lactose - sucrose
Amylase
Stomach
Lacteals
Disacchaidases
43. Refers to a digestive process that occurs outside of the cell - within a lumen or tract
Extracellular Digestion
Cholecystokinin
Parietal Cell
Disacchaidases
44. Can occur after spontaneous transient lower esophageal sphincter relaxations not associated with swallowing
GERD
Lactose-Intolerant
Small Intestine
Mucus
45. Secreted from the intestinal mucosa for fat digestion
Pepsi
Lipase
Large Intestine
Liver
46. Produced by the pancreas to digest carbohydrates
Venus flytrap
Amylase
Chemical Digestion
GERD
47. Enzyme in saliva which hydrolyzes starch to maltose
Salivary Amylase (ptyalin)
Villi
Venus flytrap
Peristalsis
48. Refers to the enzymatic breakdown of macromolecules into smaller molecules and begins in the mouth when the salivary glands secrete saliva
GERD
Lactase
Chemical Digestion
Liver
49. 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
Saliva
Human Digestive Tract
Esophagus
Lactase
50. Produces bile in the gall bladder before release into the small intestine
Saliva
Arthropods
Mucus
Liver