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