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Fudgin [204]
3 years ago
9

It has been estimated that 99% of the intestinal bacteria are A. facultative anaerobes.B. obligate aerobes.C. facultative aerobe

s.D. obligate anaerobes.
Biology
1 answer:
Klio2033 [76]3 years ago
4 0

Answer:

Obligate anaerobes. (Ans. D)

Explanation:

Anaerobes: They are micro-organisms that do not require energy oxygen for metabolism. They can only survive in an environment that lacks oxygen.

Obligate anaerobes are bacteria typically living in various places naturally. Many of obligate anaerobes living in the human body, in places such as the mouth and gastrointestinal tract (most of the obligate anaerobes present their) where oxygen level present in very low concentration.

Obligate anaerobes do not contain several enzymes needed to detoxifying oxygen present in the cell. Oxygen produces several byproducts in the presence of water such as hydrogen peroxide, it is a week acid and affects no. of enzymes present in anaerobic cells. In a high level of oxygen anaerobic cells become more acidic and not able to function.

So that's why they are found in no oxygen or low oxygen environment like the gastrointestinal tract.  

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EleoNora [17]

Complete question: The chart shows the movement of a ball after several seconds.

Column A is on the x-axis, and Column B is on the y-axis. Which titles should replace A and B?

a. Column A should be “Time,” and Column B should be “Position.”

b. Column A should be “Position,” and Column B should be “Time.”

c. Column A should be “Velocity,” and Column B should be “Speed.”

d. Column A should be “Speed,” and Column B should be “Velocity.”

Answer:

Column A should be "Time," and Column B should be  "Position"

Explanation:

In general, the first column always refers to the x-axis, this is the independent variables. While the second column refers to the y-axis, the dependent variables.

Option A) names Time and Position to the columns. This seems to be correct as time is an independent variable, while the ball position depends on time. The x-axes is named "time", and the Y-axes is named "ball position".

Option B) is not possible because the Position is not the independent variable, and time is not the dependent variable.

Option C) and D) are not possible, as both of them are variables that depend on time.

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3 years ago
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Dennis_Churaev [7]

Answer: C. The mutation resulted in a beneficial trait that enhanced survival.

Explanation:

The bacteria was able to "evolve" and adapt to the Nylon being in its environment.

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Answer:

Since genes come in more than one version, an organism can have two of the same alleles of a gene, or two different alleles. This is important because alleles can be dominant, recessive, or codominant to each other. I hope this helps

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Answer:

D. Christmas and Thanksgiving break

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