1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zinaida [17]
3 years ago
5

A common concern for beer brewers making sour beers is contamination from Acetobacter. This organism converts ethanol to acetic

acid and gives the finished product an undesirable vinegar flavor. Which of the following media would serve as a good enrichment medium to detect the presence of Acetobacter in a brewery environment?
a. Carbon dioxide, yeast extract, trace elements
b. Cellulose, phosphate buffer, magnesium sulfate, calcium chloride, trace elements
c. Ethanol, ammonium chloride, phosphate buffer, magnesium sulfate, calcium chloride, trace elements
d. Glucose, ammonium chloride, phosphate buffer, magnesium sulfate, calcium chloride, trace elements
Biology
2 answers:
wolverine [178]3 years ago
7 0

Answer:

C. Ethanol, ammonium chloride, phosphate buffer, magnesium sulfate, calcium chloride, trace elements

Explanation:

Acetobacter must have a sufficient supply of oxygen and cannot grow in its absence. Colonies of acetobacter can be detected by a culture media containing ethanol as carbon source, the acid produce by the bacteria will dissolve the chalk thereby leaving a clear zone around the colony.

kipiarov [429]3 years ago
3 0

Answer: Option C.

Explanation:

Acetobacter is an acetic acid bacteria that convert ethanol to acetic acid in the presence of oxygen. This bacteria oxidize lactate and acetate into carbon dioxide and water. Acetic acid bacteria are found in media that have high concentration of carbohydrates like fruits and ethanol. Acetobacters are found in fermented foods. Ethanol, ammonium chloride, magnesium sulfate, calcium chloride, phosphate buffer and trace elements are good enrichment media for acetobacters growth because of high concentration of sugar.

You might be interested in
SOMEONE PLZ HELP ME!!!!!!!!!!!!!!!
Paraphin [41]
Genetical material (DNA)
8 0
3 years ago
Read 2 more answers
A person jogging from the forest to the office covers the 6,800
Murljashka [212]
  • Total displacement=6800m
  • Time=2h=7200s

\\ \sf\longmapsto Avg\: Velocity=\dfrac{Total\: displacement}{Total\:time}

\\ \sf\longmapsto Avg\: Velocity=\dfrac{6800}{7200}

\\ \sf\longmapsto Avg\: Velocity=0.9420m/s

4 0
3 years ago
Read 2 more answers
A.
Rainbow [258]

Answer:

b.

Explanation:

Plants are living things(biotic).

water and climate are non-living things (abiotic)

6 0
3 years ago
Read 2 more answers
Solutions to complex environmental problems can be very costly. Communities or other affected groups might perform a cost-benefi
Zigmanuir [339]

A citizen will be looking for environmental benefit and public health, which will upsurge the quality of life of the community. The citizen may look for the benefits worth the cost. The CEO of the company might be worried about the costs that appear too high to warrant making environmental initiatives cost-efficient for the business.  

A city manager might or need to have the most balanced understanding, desiring to make improvements, which would better the lives of the citizens of the city, but that would keep the city within the municipal budget limits.  


4 0
3 years ago
Meaning of transparent<br>​
Charra [1.4K]

fine or sheer enough to be seen through

5 0
2 years ago
Read 2 more answers
Other questions:
  • True or False: Bacteria that do not have flagella are never moved from one place to another.
    5·1 answer
  • Which scientist developed the system for classifying organisms
    12·2 answers
  • If a person consumed the upper amdr limit for protein as part of a diet providing 2500 kcalories, approximately how many grams o
    8·1 answer
  • According to the diagram, the LEAST amount of water is used in households when people A) wash clothes. B) take showers. C) flush
    15·1 answer
  • Factory → air → plants → Animals
    6·2 answers
  • The greater a car's mass, the more force is needed to make it speed up at the same rate.
    15·1 answer
  • Which structure in the cell shown in Figure 7–2 above stores materials, such as water, salts, proteins, and carbohydrates?
    14·1 answer
  • So can anyone name all the types of wave and what category they go in.
    14·1 answer
  • ????????? ????????????? URGENT ANSWER!
    11·2 answers
  • 2 reasons why someone might selectively breed cats<br><br> Other then to stop allergies
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!