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