Question

Name: _____ Lab Section: _ Snyder test and bacteria of the mouth Fill in the blank: 1. The Snyder test is a simple and fun procedure that is used to evaluate a person's _ to developing dental caries. 2. Snyder test medium is formulated to _ (favor, un-favor) the growth of oral bacteria and _ (encourage, discourage) the growth of other bacteria. 3. This is accomplished by _ (increasing, lowering) the pH of the medium to _ (pH number), which is _ (acid, neutral, alkaline). 4. Decalcification of enamel begins at a pH of _ and progresses rapidly at a pH below _. 5. Sucrose is broken down by bacteria in the mouth to form _ and _. What percentage of sucrose is in Snyder test agar? _ 6. _ is then fermented to form _ acid, which initiates dental caries by eroding _. 7. Only members of _, _, and _ (name of genus and species) survive these harsh conditions and also _ glucose to _ (lower, increase) the pH even further. Which of the listed bacteria is most likely to cause dental caries? _ 8. This bacterium is able to form a capsule made out of _ that allows it to adhere to the surface of the _. 9. Masses of _, _, and _ adhering to the teeth constitute dental _. 10. You can easily tell if the pH has _ (increased, decreased) because the media has a pH indicator called : _ which is _ (color) at or above pH _ and turns _ (color) _ (below or above) 4.8. 11. Development of a _ color in this medium is evidence of _ (aerobic respiration, anaerobic respiration, fermentation) and is highly suggestive of the presence of dental decay-causing bacteria. 12. The media is maintained in a warm water bath to keep it _ (solid, liquid) until needed. 13. The agar is inoculated with _ and incubated up to _ hrs. 14. What temperature is the inoculated tube incubated at and why is it incubated at this specific temperature? _ 15. If the person has high susceptibility to dental caries the agar will change to _ (color) at _____ hrs.

          Name: _________
Lab Section: _________
Snyder test and bacteria of the mouth
Fill in the blank:
1. The Snyder test is a simple and fun procedure that is used to evaluate a person's _________ to developing dental caries.
2. Snyder test medium is formulated to _________ (favor, un-favor) the growth of oral bacteria and _________ (encourage, discourage) the growth of other bacteria.
3. This is accomplished by _________ (increasing, lowering) the pH of the medium to _________ (pH number), which is _________ (acid, neutral, alkaline).
4. Decalcification of enamel begins at a pH of _________ and progresses rapidly at a pH below _________.
5. Sucrose is broken down by bacteria in the mouth to form _________ and _________. What percentage of sucrose is in Snyder test agar? _________
6. _________ is then fermented to form _________ acid, which initiates dental caries by eroding _________.
7. Only members of _________, _________, and _________ (name of genus and species) survive these harsh conditions and also _________ glucose to _________ (lower, increase) the pH even further. Which of the listed bacteria is most likely to cause dental caries? _________
8. This bacterium is able to form a capsule made out of _________ that allows it to adhere to the surface of the _________.
9. Masses of _________, _________, and _________ adhering to the teeth constitute dental _________.
10. You can easily tell if the pH has _________ (increased, decreased) because the media has a pH indicator called : _________ which is _________ (color) at or above pH _________ and turns _________ (color) _________ (below or above) 4.8.
11. Development of a _________ color in this medium is evidence of _________ (aerobic respiration, anaerobic respiration, fermentation) and is highly suggestive of the presence of dental decay-causing bacteria.
12. The media is maintained in a warm water bath to keep it _________ (solid, liquid) until needed.
13. The agar is inoculated with _________ and incubated up to _________ hrs.
14. What temperature is the inoculated tube incubated at and why is it incubated at this specific temperature? _________
15. If the person has high susceptibility to dental caries the agar will change to _________ (color) at _________ hrs.

Name:
Lab Section:
Snyder test and bacteria of the mouth
Fill in the blank:
1. The Snyder test is a simple and fun procedure that is used to evaluate a person's to developing dental caries.
2. Snyder test medium is formulated to (favor, un-favor) the growth of oral bacteria and (encourage, discourage) the growth of other bacteria.
3. This is accomplished by (increasing, lowering) the pH of the medium to (pH number), which is (acid, neutral, alkaline).
4. Decalcification of enamel begins at a pH of and progresses rapidly at a pH below .
5. Sucrose is broken down by bacteria in the mouth to form and . What percentage of sucrose is in Snyder test agar?
6. is then fermented to form acid, which initiates dental caries by eroding .
7. Only members of , , and (name of genus and species) survive these harsh conditions and also glucose to (lower, increase) the pH even further. Which of the listed bacteria is most likely to cause dental caries?
8. This bacterium is able to form a capsule made out of that allows it to adhere to the surface of the .
9. Masses of , , and adhering to the teeth constitute dental .
10. You can easily tell if the pH has (increased, decreased) because the media has a pH indicator called : which is (color) at or above pH and turns (color) (below or above) 4.8.
11. Development of a color in this medium is evidence of (aerobic respiration, anaerobic respiration, fermentation) and is highly suggestive of the presence of dental decay-causing bacteria.
12. The media is maintained in a warm water bath to keep it (solid, liquid) until needed.
13. The agar is inoculated with and incubated up to hrs.
14. What temperature is the inoculated tube incubated at and why is it incubated at this specific temperature?
15. If the person has high susceptibility to dental caries the agar will change to (color) at hrs.

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