Bio 12

Mr. Man – label the ones you already know!

Digestion – Pathway- Structure and Function

Part

Structure

Function

1)

2)

3)

4)

5)

Enzymes

Level 1

Sketch out the digestive pathway, include the 3 accessory organs – list enzymes that are active in each location and provide ph.

Enzymes

Level 2

Organize enzymes by the macromolecule they digest. Show the enzymes in order of the digestive process for each macromolecule.

Blood Sugar Regulation

The pancreas is both a ______________________ and __________________________ gland.

In blood sugar regulation the pancreas release 2 _______________________________; _____________________ and _____________________________. These hormones target the _____________________________ where ___________________ can be stored as _________________________ when blood sugar is too _______________________________.

Normal blood sugar levels are ______________________________.

REVIEW TIME = GOOD TIMES!

Part 1. Vocab

1. enzyme

2. hormone

3. saliva

4. salivary amylase

5. peristalsis

6. sphincter

7. pancreas

8. liver

9. chemical digestion

10. physical digestion

11. epiglottis

12. bile

13. emulsification

14. absorption

15. pancreatic juice

16. E Coli

17. insulin

18. glucagon

19. pepsin

20. gastric juice

21. sodium bicarbonate

22. appendix

23. villi

24. pancreatic amylase

25. trypsin

26. nucleases

27. maltase

28. peptidases

29. emulsify

30. gallbladder

Part 2. ONE WORDS - Easy Peasy – Fill in the blank Spots.

1. There are 3 types of biochemicals in the food that we eat that have to be digested. These are: _________________ ______________________ and ______________________________.

2. The stomach is directly connected to the _______________________ above) and the _____________________ (below).

3. The major food tyope that is digested in the stomach is ________________________, which is hydrolysed by the enzyme ________________________.

4. Among its chemical aspects, every digestive enzyme has a preferred ____________.

5. Before fats are digested they are emulsified by _____________________.

6. Pancreatic juices enter the small intestine by way of th ___________________ duct and contain ________________________ for the digestion of all three types of biochemicals.

7. The finger like projections lining the walll of the small intestine are called ___________________.

8. A bacterium ____________________, lives I the colon, its metabolic activities release ______________ and ___________________.

9. Name 6 functions of the liver:

________________________________________________________

________________________________________________________

________________________________________________________

Part 3 - Summary of Digestive Enzymes

Enzyme

Source

Substrate

Product

pH

3 stories of Digestion – Now Organize the enzyme by the biochemical they digest. Trace the chemical breakdown of the 3 biochemicals listed below. Give enzyme, substrate, product and pH.

1. Carbs

2. Proteins

3. Lipids

Part 4 - Digestive System Concept Questions

1. How do mechanical and chemical digestion work together to break down food?

2. How does chewing aid digestion?

3. What is the purpose of saliva?

4. Your friend notices that when they chew soda crackers they start to taste sweet. How would you explain this to your friend?

5. Your friend bets you that you cannot swallow food while standing on your head. Do you take the bet?

6. One of your friends laughs at pretty much anything and often chokes on food at lunch. How would you explain the connection?

7. What would be the result if the stomach did not have sphincter muscles?

8. What’s the deal with pepsinogen and pepsin?

9. Your friend’s father has been diagnosed with a peptic ulcer. Explain to them what this means and give some advice about how to treat it.

10. Why is surface area important in the small intestine and what features increase it?

11. How is the structure of villi adapted to their function?

12. How do food molecules get from the stomach to your blood?

13. How is the small intestine protected from the acid chyme? From pepsin?

14. Complete the following table

Nutrient

Digestion Begins

Digestion Completed

Carbohydrates

Proteins

Fats

Mr Man – now you should know them ALL!

A Villus – label it up!

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