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