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