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svetlana [45]
3 years ago
7

Elements in the same periodic table wich has the same number of valence electrons

Biology
1 answer:
nadezda [96]3 years ago
7 0
Elements In the same group or family in the periodic table have the same number of valence electrons.

For example the halogens all have 7 valence electrons in their outermost electron shell.
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An organism has a metabolic pathway that is controlled by an inducer through negative regulation. When this organism is grown in
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Answer:

The inducer will combines with the repressor and inactivates the pathway.

Explanation:

Inducer is a term in Molecular Biology, which represent a molecule or substance that has the capability to activate the transcription of a gene, where by it joins with and then inactivates a genetic repressor.

In other words, the inducer binds with the repressor in order to prevent the RNA polymerase to combine to the DNA, and chemically produce mRNA, this is done by repressor proteins combining with the DNA strand.

Inducer specifically makes repressor to change shapes, which will make it not combine with the DNA, and therefore, allow formation of transcription, such that expression of gene will eventually occur.

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F a 25-year-old woman visits a community health care center to obtain a gynecological examination and birth control pills, these
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Cellular immunity kills pathogens inside the cell, whereas humoral immunity destroys pathogens outside the cell.

<h3>What is the difference between Cellular and Humoral immunity?</h3>

The main difference between humoral and cell-mediated immunity is that humoral immunity produces antigen-specific antibodies, whereas cell-mediated immunity does not produce antigen-specific antibodies. The cellular immunity destroys pathogens and harm microbes that are present inside the cell, whereas humoral immunity kills pathogens outside the cell.

So we can conclude that cellular immunity kills pathogens inside the cell, whereas humoral immunity destroys pathogens outside the cell.

Learn more about immunity here: brainly.com/question/6612564

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