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Dafna1 [17]
3 years ago
15

A wave is traveling through X. What can be known about X?

Biology
1 answer:
PSYCHO15rus [73]3 years ago
5 0
In the meaning of wave x it would be solid
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An operon is controlled by a repressor. When the repressor binds to a small molecule, it binds to DNA near the operon. The opero
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Answer:

Negatively repressible.

Explanation:

A control which occurs through repressor is known as negative control which may be inducible or repressible.

When a small molecule named as allolactose binds this repressor it leads to allosteric repulsion which removes repressor from the operator as a result of which RNA polymerase can start transcription. Allolactose is therefore known as inducer because it induces lac operon expression.

But here, the operator is active (induced) already so there is no need to induce the operon which means that it can only be repressed so that transcription could stop. So the answer is negatively repressible operon.

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3 years ago
What are two global issues associated with using fossil fuels for energy?(1 point)
astraxan [27]

Answer: b. fossil fuels are nonrenewable, so humans will run out of them eventually. burning fossil fuels also contributes to global climate change by releasing carbon dioxide into the atmosphere.

Explanation:

Fossil fuels are limited and we will run out of them eventually. They cannot be replenished in a single human's lifespan. Fossil fuels contribute to the destruction of ecosystems, but not only that. They release carbon dioxide into the atmosphere that warms the Earth. Therefore, anything other than B. would be incorrect.

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2 years ago
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It's ss....................

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