Biology Quiz (Digestion)2008 for 4B

8/3/2019 Biology Quiz (Digestion)2008 for 4B

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BIOLOGY QUIZ (DIGESTION)


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PART 1 MULTIPLE CHOICE QUESTIONS

(1 MARK EACH)

1. Which molecule is digested by lipase?

A. Protein

B. Fats

C. Starch D. Maltose

E. Glucose


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2. Why can pepsin digest food properly in astomach?

A. The body temperature is unsuitable forenzyme activity.

B. High temperature changes the structure ofthe enzyme.

C. The highly acidic condition activates theenzyme.

D. The highly alkaline condition activates theenzyme.


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3. Peristalsis is.. (2 possible answers)

A. the series of contraction and relaxation ofcardiac muscle.

B. the process bringing a food bolus from amouth down to a stomach.

C. the process that circular muscles repeatedlycontract and relax.

D. enzyme secretion in a stomach.


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4. A peptic ulcer is

A. A disease that salivary glands are unable tosecrete an enzyme.

B. Erosion of the large intestinal lining caused

by bacteria.C. An internal sore in a stomach caused by

excess secretion of acid.

D. Symbiotic bacteria living in human large

intestine.


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5. Mr.Ome ate only bread for dinner last

night. Where are the first place the breadis digested and the last place the bread is

absorbed?

A. mouth and anus

B. stomach and esophagus

C. small intestine and small intestine

D. mouth and small intestine


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6. Gastric juice composes of .

A. HCl, pepsin, mucus, lipase, and rennin

B. Only pepsin, active amylase, and mucus

C. Only pepsin and HCl

D. Pepsin, mucus, lipase, and acetic acid


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7. Duodenum, the first part of a small intestine,

connects to the ducts from a pancreas and a

gall bladder. How are these two accessoryorgans significant to human digestion?

A. Both of them produce digestive enzymes such

as amylase and bilase.

B. A pancreas produces bile and a gall bladder

stores bile.

C. A pancreas produces many enzymes and a gall

bladder store them.

D. A pancreas secretes important digestive

enzymes and a gall bladder stores bile secretedby the liver.


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(1 MARK EACH)

8. What are the two enzymes that can complete this

equation? (2 answers)

Polypeptides + water Protein fragments

A. CarboxypeptidaseB. Lipase

C. Pepsin

D. Aminopeptidase

E. Amylase

F. Trypsin


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9. How can a triglyceride be digested and absorbed?

A. Its degraded by pepsin and lipase and absorbed

at the stomach.

B. Its digested by lipase with help from bile saltsand then absorbed into lymph vessels.

C. It can be directly absorbed into the lymphatic

system without digestion.

D. It can be digested by lipase and then absorbedinto the blood stream.


(1 MARK EACH)


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10. How are gastric folds significant to the digestive

system?

1. Increase surface area for both gastric juice

secretion and nutrient absorption. 2. Secrete a lot of mucus to prevent against harmful

bacteria.

3. Secrete bile for fat digestion.

4. Collect undigested food for defecation.


(1 MARK EACH)


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Now, leave your partner inthe classroom for the essay

questions.


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1. Write down the complete

human alimentary canal and

related glands. (3 marks)

*Wrong spelling is wrong!!!!

PART 2 SHORT ANSWERED AND ESSAY

QUESTIONS


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2. Trace the pathway of food eaten

by a chicken.

(2 marks)


QUESTIONS


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Now, leave your partner inthe classroom for the essayquestion.


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3. Give two suggestions to maintain a

healthy digestive system.

(2 marks)


QUESTIONS


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11. Sponges and human have ___________ to break

down food particles.

A. Extracellular respiration

B. Extracellular digestion

C. Intracellular digestion

D. Intracellular excretion


(1 MARK EACH)


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12. Which is correct about digestion?

A. Every enzyme can work well in an acidic

condition.

B. Chewing, tearing, and cutting food by teeth arebiochemical digestion.

C. Fungi have intracellular digestion which food is

digested outside their cells then absorbed into cells.

D. The appendix of a rabbit is where cellulose isfermented.


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13. A gizzard is found in ____________.

A. Human

B. Sea anemoneC. Cow

D. cockroach


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14.What is a function of a birds crop?

A. secreting digestive enzymes

B. storing food

C. mechanical digestion

D. digesting proteins


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15. The following names are the 4 chambers

of a cows stomach, except_________

A. reticulum

B. abomasum

C. duodenum

D. omasum

E. rumen


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16. Human permanent teeth include the

following kinds, except_________.

A. 10 incisors

B. 4 canines

C. 8 premolars

D. 12 molars


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17. Which pairs of nerves control salivation?

A. Dorsal nerve pairs no.3 and no.4

B. Ventral nerve pairs no.5 and no.7

C. Cranial nerve pairs no.7 and no.9

D. Dorsal nerve pairs no.9 and no.10


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18. Which is correct about digestive enzymes?

yA. Pepsin can work well in alkaline

condition.

y B. Lipase is secreted from a stomach and

digests fats well there.

y C. Nuclease digests a nucleus.

y D. Amylase is secreted from both salivaryglands and a pancreas.


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19.Helicobacter pylori is________

yA. a bacterium helping in cellulose

digestion.

y B. a protozoan infecting stomach lining.

y C. a protozoanpartly digesting fats.y D. a bacterium mainly causing peptic

ulcers.


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20. What is the function of intrinsic factor

produced by the stomach lining?

A. increasing bile production in the liver.

B. reducing enzyme secretion from the

pancreas.

C. stimulating B12 absorption at the small

intestine.

D. increasing HCl production in the

stomach.


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Part 4 Short answered questions.

1. What are 3 well-known disaccharidases?


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2. What is the function of a caecum and an

appendix of a rabbit.


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3. What are three pairs of

salivary glands called?


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4. The disease that your appendix getinflamed is called _________.


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5. What is the function ofE. coli found in

the large intestine?


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6. Three parts of the small intestine are

__________.


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7. Nucleic acids

7.1 DNA and RNA contain sugar molecules

called _______________ and ______________.

7.2 DNA and RNA are digested by

enzyme____________.


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8. Triglycerides are digested by enzyme

_______________ into ____________ and

_______________.


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9. What are the molecules found after

proteins are totally digested?


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10.Give the three components of thegastric juice. (3 marks)


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1. Refer to the structure of our

digestive system. Give the

reasons to support why humansare omnivores. (3 marks)


QUESTIONS


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(1 MARK EACH)

Biology Quiz (Digestion)2008 for 4B

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