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