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Hoochie [10]
3 years ago
8

1) Bacteria respond to changes in their environments, such as nutrient availability, by regulating their metabolic pathways. Des

cribe two mechanisms that bacteria use in order to adapt to environmental changes. Include in your answer which mechanism is a short-term or long-term adaptation. (Pg. 364, paragraph 3, sentence 2; paragraph 4, sentence 1)
Biology
1 answer:
nasty-shy [4]3 years ago
4 0

Answer:

Examples:

- Short-term adaptation: feedback inhibition

- Long-term adaptation: regulation of gene expression

Explanation:

Feedback inhibition is a mechanism where the product of a chemical reaction is utilized to modulate its own subsequent synthesis. In bacteria, feedback inhibition allows regulating different metabolic pathways in response to environmental conditions by modulating enzyme activity through enzyme reaction products. Moreover, bacteria may also respond to environmental inputs by long-term changes in gene expression. For example, bacteria contain transcription factors activated during stress, which are able to activate the transcription of particular genes into messenger RNAs (mRNAs) that would subsequently be used to generate particular enzymes by the process of translation. These transcription factors may bind to specific DNA motifs in order to promote transcriptional activity, thereby regulating the production of the corresponding enzyme.

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Answer: (D)

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gregori [183]
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5 0
3 years ago
How does the way that matter cycles through an ecosystem differ from the way that energy flows?
VLD [36.1K]

Answer: Unlike the one way flow of energy, matter is recycled within and between ecosystems.

Explanation:

4 0
3 years ago
Aneuploidy, defined as an abnormal number of chromosomes, is the most common chromosomal abnormality. Which of the following eve
Lady_Fox [76]

Answer:

The correct answer is - the incorrect separation of this pair of sister chromatids during meiosis II.

Explanation:

Down syndrome is a type of aneuploidy in which the number of the chromosome is not as normal condition as it occurs by inheritance of an extra chromosome. This disorder is usually caused due to an error or in meiosis if the sister chromatids fail to separate during meiosis II in an embryo and leads to three copies of the chromosome instead of two.

This condition is lead to the down syndrome which is one of the most common trisomy case as it results an extra chromosome of chromosome 21.

Thus, the correct answer is - the incorrect separation of this pair of sister chromatids during meiosis II.

4 0
3 years ago
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