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Anna [14]
3 years ago
11

Which of the following best describes the difference between speed and acceleration?

Biology
1 answer:
devlian [24]3 years ago
5 0

Answer:

Acceleration is the distance an object travels within a specific unit of time, whereas speed is the rate at which the acceleration or direction of an object is changing.

Explanation:

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it loses its tail and develops its legs to be stronger

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If the liver cells of an animal have 24 chromosomes, its sperm cells would have how many chromosomes?
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What is the primary psychosocial milestone of childhood? question 5 options:?
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You are doing an experiment and plated E. coliin different medias. Media A has onlyglucose, B has only lactose, and media C has
krek1111 [17]

Answer:

A. Glucose:

As lactose is absent will follow the glucose metabolism, so the lac repressor will hold tightly with the operator which leads to the prevention of transcription as RNA polymerase can not bind to promoter so no lactose metabolism.

B. lactose:

In the case or wild mutant lactose metabolism will occur as lactose is present, allolactose binds to the lac repressor thus the operator and promoter are free so transcription starts.  The same result will be in all test except in the case of a mutant repressor.

C. glucose and lactose:

In this case, diauxic growth will occur. This growth takes place when two sugars are present in the media. The preferred sugar will be consumed first That is glucose. Then a lag phase will come which will be followed by the second sugar metabolism that is lactose.  the given two cases :

Lactose will be metabolized first, as operator site mutation prevents repressor protein binding and thus will lead to the constitutive synthesis of lac operon in test B.   The same thing will happen, as in this case also, constitutive synthesis of lac operon will happen in test C.

Cultures grown in the presence of both glucose and lactose are metabolizing lactose. In the test (b) and (c) will be responsible due to constitutive synthesis of lac operon will happen.

6 0
3 years ago
What metaphor best describes evolution A) random or chaos B)an improve comes routine or C) An architect building from blueprints
galina1969 [7]

Answer: B

Explanation:

Evolution is a process of elimination.  the traits that are successful and help them survive are kept for the next population, because they are abet o survive to repopulate.  So its improvement.  

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3 years ago
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