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denis23 [38]
3 years ago
12

Pls help i dont understand​

Biology
1 answer:
Deffense [45]3 years ago
8 0

Answer:

D. The life cycle of a high-mass star

Explanation:

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When analyzing the results of a scientific experiment, Kevin should base his conclusion on
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Predictive patterns seen during the scientific experiment.

Explanation:

A conclusion results from an observed pattern from an experimented results.

This predictive pattern is taken for further investigation on different conditions before a law is proposed.

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Explain why transboundary environmental threats like pollution are a problem for both parties, even if one community is principa
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Due to its spreading nature.

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Transboundary environmental threats like pollution is a problem for both parties i. e. one that is producing pollution and the other which is not producing it, because pollution can't remain at one place and spread from one part to another part of the earth due to open environment. So due to its spreading, it affected both the producing and non-producing parties.

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How many planets are in the Earth's solar system?
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Mutations rII1 and rII2 are known to fall into the rIIA and rIIB cistrons (genes) respectively. Cells of E. coli B are infected
viktelen [127]

Answer:

the answer is A. E. coli B

Explanation:

The multiplicity of infection (MOI) refers to the ratio between the numbers of viruses used to infect <em>E. coli</em> cells and the numbers of these <em>E. coli </em>cells. Benzer carried out several experiments in order to define the gene in regard to function. Benzer observed that <em>E. coli </em>strains with point mutations could be classified into two (2) complementary classes regarding coinfection using the restrictive strain as the host. With regard to his experiments, Benzer observed that rII1 and rII2 mutants (rapid lysis mutants) are complementary when they produce progeny after coinfect E. coli K (where neither mutant can lyse the host by itself). The rII group of mutants studied by Benzer does not produce plaques on <em>E. coli</em> K strains that carry phage λ (lysogenic for λ), but they produce plaques on <em>E. coli</em> B strains. This study showed that rIIA and rIIB are different genes and/or cistrons in the rII region.

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3 years ago
Does negative feedback stop or speed up the release of hormones?
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Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus causes the release of a substance whose effects then inhibit further release. In this way, the concentration of hormones in blood is maintained within a narrow range.

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