Lab quiz 2-saliva
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| What is the composition of saliva | Water, solutes, dissolved gases, organic substances,
🗑
|
||||
| How much of the saliva is made up of water | 99.5%
🗑
|
||||
| What type of ions make up the saliva | Na, K, Cl, HCO3, phosphates
🗑
|
||||
| What type of organic substances are found in the saliva | urea & uric acid, serum albumin & globulin, mucin, lysozyme, salivary amylase
🗑
|
||||
| What is the pH of saliva | 6.35-6.85
🗑
|
||||
| What is the volume of saliva in ml/day | 1000-1500; 1-1.6 qt
🗑
|
||||
| What is the purpose of benedict's test | to test for the presence of reducing sugars (glucose), blue=neg, gold=positive
🗑
|
||||
| What test tube colors indicate: starch + amylase, maltose, sucrose, lactose | green, gold, blue, gold (all are positive benedict's colors, and from least to greatest concentration of substance are green(+), yellow(++), orange(+++), red(++++) )
🗑
|
||||
| Where is salivary amylase produced? | In the parotid gland
🗑
|
||||
| What is the function of mucus | to lubricate food so it can easily be moved about in the mouth, formed into a ball, and swallowed.
🗑
|
||||
| What is the function of lysozyme | helps to destroy bacteria and protect mucous membrane from infection and teeth from decay
🗑
|
||||
| What is the function of parasympathetic stimulation | continuous secretion of a moderate amount of saliva
🗑
|
||||
| What is the function of sympathetic stimulation | dominates during stress resulting in dryness of the mouth
🗑
|
||||
| What does drinking do in dehyrdration | Not only moisten the mouth, but also restore the homeostasis of the body water
🗑
|
||||
| What 2 parasympathetic nerves stimulate salivary secretion | VII (facial), IX (glossopharyngeal)
🗑
|
||||
| What is Benedict's reagent | a copper reduction reaction; reducing substances react w cupric sulfate to form reduced cuprous oxide--> color change
🗑
|
||||
| What is the optimum temperature for amylase activity? | 37 degrees C, body temp
🗑
|
||||
| What is a reducing sugar | an agent that will undergo an increase in oxidation number(lose e-) and reduce other substances
🗑
|
||||
| What other ion aids in starch digestion besides amylase | Cl-
🗑
|
||||
| Which of maltose, sucrose, and lactose are non-reducing sugars | sucrose
🗑
|
||||
| Which of sucrose, maltose, and lactose have the most reducing sugars | lactose and maltose
🗑
|
||||
| What is the optimal pH for starch digestion | 7
🗑
|
||||
| How does the pH for amylase activity compare with the pH of saliva, stomach, small intestines | saliva-has to be just right stomach-too acidic SI-a little too basic
🗑
|
||||
| Where does carb digestion occur in the body | starts in the mouth, stomach, and most in the small intestines
🗑
|
||||
| What ion in the saliva activates salivary amylase | Cl-
🗑
|
||||
| what division of the ANS stimulates saliva secretion | parasympathetic
🗑
|
||||
| What division of the ANS inhibits saliva secretion | sympathetic
🗑
|
||||
| What enzyme in the saliva initiates carb digestion | amylase
🗑
|
||||
| What is the role of water in the saliva | medium for dissolving for taste, initiate digestive rxns
🗑
|
||||
| What are the roles of HCO3- and P ions | buffer acidic foods that enter the mouth
🗑
|
||||
| If a starch is present what color will you see | a dark blue/black when reacts with iodine
🗑
|
||||
| What is the purpose of the starch test? Is it qualitative, quantitative, or both? | to test for the presence of substrate of the reaction, qualitative only
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
sparklefarkle84
Popular Science sets