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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. Degradation of large molecules into smaller molecules that can be absorbed into the bloodstream and used directly by cells
Chyme
Disacchaidases
Digestion
Annelids/Earthworms
2. Restin pressures of the lower esophageal sphincter normally range from 15-35mmHg above gastric baseline pressure
Extracellular Digestion
Crop (in annelids)
GERD
Intestine (in annelids)
3. Enzymes are secreted - hydrolyzing complex nutrients into simpler molecules - which are then absorbed
Physical Breakdown
Digestion
Disacchaidases
Extracellular Digestion
4. Contains a typholosole to provide increased surface area for digestiona nd absorption
Esophagus
Intestine (in annelids)
Physical Breakdown
Salivary Amylase (ptyalin)
5. When nutrients are required for plants - the storage polymers are broken down to simpler molecules by enzyme hydrolysis
Crop (in annelids)
Lacteals
Intracellular Digestion
Phagocytosis
6. Vessels of the lymphatic system
GERD
Lacteals
Rhizoids
Salivary Glands
7. The breakdown of large food particles into smaller particles through mastication
Amylase
Mechanical Digestion
Stomach
Gastrin
8. 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
Intracellular Digestion
Cnidarians/ Hydras
Mastication
Pepsi
9. Secreted from intestinal mucos for digestion of lactose
Lactase
Villi
Peristalsis
Large Intestine
10. 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
Endodermal Cells
Saliva
Small Intestine
Liver
11. Unable to synthesize their own nutrients
Heterotrophic
Gastrin
Human Digestive Tract
Cholecystokinin
12. Decreased lower esophageal sphincter pressure is not always associated with the development of GERD; however - the majority of patients
Mastication
Gastrin
Pepsinogen
GERD
13. Have one way digestive tract with both a mouth and an anus
Annelids/Earthworms
Bile
Endodermal Cells
Lactose-Intolerant
14. Secretion of the parietal cells that facilitates the absorption of vitamin b12 across the intestinal lining
Oral Cavity
Physical Breakdown
Intrinsic factor
Lipase
15. Fuse with the food vacuole and release their digestive enzymes that act upon the nutrients
Lysosomes
Stomach
Salivary Amylase (ptyalin)
Venus flytrap
16. Produced by the pancreas for fat digestion
Esophagus
Endodermal Cells
Lipase
Small Intestine
17. An acidic - semifluid mixture of partially digested food produced from the churning of the stomach
Lactase
Chemical Breakdown
Crop (in annelids)
Chyme
18. Secreted from intestinal mucosa for digestion of maltose - lactose - sucrose
Rectum
Intestine (in annelids)
Phagocytosis
Disacchaidases
19. Finger like projections that extend out of the intestinal wall -contain capillaries and lacteals
Lipase
Villi
Rectum
Lipase
20. Produced by the pancreas for protein digestion
Trypsin
Extracellular Digestion
Salivary Amylase (ptyalin)
Liver
21. Occurs within the cell - usually in membrane-bound vesicles
Lactase
Crop (in annelids)
Mechanical Digestion
Intracellular Digestion
22. Food is moved down the esophagus by this rhythmic waves of involuntary muscular contraction
Cnidarians/ Hydras
Amylase
Intracellular Digestion
Peristalsis
23. Enzyme in saliva which hydrolyzes starch to maltose
Salivary Amylase (ptyalin)
GERD
Intracellular Digestion
Digestion
24. Produces enzymes such as amylase - trypsin - lipase
GERD
Pancreas
Oral Cavity
Liver
25. Can occur after spontaneous transient lower esophageal sphincter relaxations not associated with swallowing
Lysosomes
Large Intestine
GERD
Digestion
26. 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
Villi
Mucus
Secretin
Small Intestine
27. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine
Large Intestine
Lactase
Secretin
Intestine (in annelids)
28. Refers to the enzymatic breakdown of macromolecules into smaller molecules and begins in the mouth when the salivary glands secrete saliva
Chemical Digestion
Peristalsis
Intestine (in annelids)
Extracellular Digestion
29. A large - muscular organ located in the upper abdomen - stores and partially digests food
Stomach
Oral Cavity
Intrinsic factor
Esophagus
30. Provides for transient storage of feces before elimination through the anus
Villi
Oral Cavity
Rectum
Endodermal Cells
31. The muscular tube leading from the mouth to the stomach
Intracellular Digestion
Lysosomes
Extracellular Digestion
Esophagus
32. Produced by the pancreas to digest carbohydrates
Crop (in annelids)
Stomach
Arthropods
Amylase
33. Accomplished by enzymatic hydrolysis -nutrients pass through the semipermeable plasma membrane of the gut cells to be further metabolized or transported
Oral Cavity
Chemical Breakdown
Parietal Cell
Venus flytrap
34. Stimulates the parietal cells to produce a substance (HCl) that denatures proteins and activates digestive enzymes
Venus flytrap
Human Digestive Tract
Lacteals
Gastrin
35. (Insects) have a digestive system similar to that of the earthworm
Liver
Digestion
Arthropods
Peristalsis
36. Begins with oral cavity and continues with the pharynx - the esophagus - stomach - small inestine - large intestive - then anus
Human Digestive Tract
Cholecystokinin
Chemical Breakdown
Trypsin
37. Pseudopods surround and engulf food and enclose it in food vacuoles
Extracellular Digestion
Phagocytosis
Gizzard (in annelids)
Crop (in annelids)
38. Produces bile in the gall bladder before release into the small intestine
Esophagus
Pepsi
Annelids/Earthworms
Liver
39. To grind the food
Gizzard (in annelids)
Human Digestive Tract
Trypsin
Cnidarians/ Hydras
40. Secreted from the intestinal mucosa for fat digestion
Parietal Cell
Endodermal Cells
Lipase
Pepsinogen
41. Improve food digestion
Salivary Glands
Mastication
Arthropods
Secretin
42. Uses intracellular and extracellular digestion
Trypsin
GERD
Cnidarians/ Hydras
Intrinsic factor
43. Enzymes are secreted to digest the fly and absorb the soluble end products
GERD
Lipase
Extracellular Digestion
Venus flytrap
44. Large particles of food into small particles begins by cutting and grinding in the mouth and churning in the digestive tract
Oral Cavity
Trypsin
Mucus
Physical Breakdown
45. Place to store food
Rhizoids
Crop (in annelids)
GERD
Endodermal Cells
46. Biting and chewing action of teeth
GERD
Mastication
Cholecystokinin
Salivary Amylase (ptyalin)
47. Bring food to the mouth (ingestion) and release the particles intoa cup-like sac
Mucus
Chemical Breakdown
Tentacles
Large Intestine
48. Secretes two substances: intrinsic factor and hydrchloric acid
Parietal Cell
Intracellular Digestion
Rectum
Aminopeptidase
49. Secreted from the intestinal mucosa for polypeptide digestion
Chyme
Intrinsic factor
Liver
Aminopeptidase
50. Patients usually have a decreased lower esophageal reflux pressure - leading to an increased passage of stomach contents into the esophagus
Peristalsis
GERD
Chemical Digestion
Arthropods