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Ulleksa [173]
3 years ago
12

A study was done to examine the personal goals of elementary school children. a random sample of 500 students was selected from

schools in the state of georgia. the students received a questionnaire regarding personal goals. they were asked what they would most like to do at school: get good grades, be popular, or be good at sports. the results are presented in the table, classified by the gender of the child. we wish to test the null hypothesis that gender and personal goal are independent. under the null hypothesis, the expected number of boys that would select "be good at sports" is
Biology
1 answer:
aleksley [76]3 years ago
3 0
Since we wish to test the null hypothesis that gender and personal goal are independent. Under the said null hypothesis, the expected number of boys that would select "be good at sports" would be the same more or less with the girls that would select "be good at sports". The difference in their means would be set to zero for this null hypothesis.
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What is wrong with a bacterial cell if it cannot make protein
ivann1987 [24]

There are a variety of points in the transcriptional chain at which it is possible to disrupt protein synthesis in bacteria. Let’s enumerate just a few:

<span>There’s the initial point where DNA is transcribed into mRNA;<span>there’s the point where mRNA binds to the Ribosome complex;</span>there’s the point where tRNA-aminoacyl pair binds to the Ribosome according to the current codon being “read out” in the mRNA;there’s the point where the aminoacid transported by the tRNA is transferred to the growing protein chain; andthere’s the point where the protein synthesis is determined complete, and the Ribosome disengages and releases the newly-synthesized peptide chain.</span>

In each of these stages (and in some other, more subtle phases) there are possible points of disruption and there are specific disruptors; some of which are indicated in the aboveProtein synthesis inhibitor article.

Note, by the way, that the Ribosomes of Prokaryotes (bacteria) and Eukaryotes (cells with nuclei) aren’t identical, and therefore the inhibitors/disruptors that work for one type of cell may not (and usually don’t) work on the other type. That’s why we can take antibiotics targeted at bacteria with little to no fear of them interfering with our eukaryotic cells’ functions.

(This is a simplified, somewhat hand-wavy response. There is a lot more to say, mainly because biological systems are anything but simple. Nevertheless this should be enough to get you started in the general direction.)

4 0
3 years ago
Blank are a group of cells that work together to perform a specific function.
Margaret [11]
The answer is A. tissues
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Natasha2012 [34]

Answer:

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Hope this helps.

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2 years ago
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Zigmanuir [339]

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If you had a giant, 1000 cm Twizzler, how much of it would remain after: a) One half-life ____________________ b) Two half-lifes
navik [9.2K]

Explanation:

The half life is the time taken for a half of a radioactive material or substance to decay to half.

After the passing of the half-life, only half of the original material will remain. Now, let us follow the half-life sequence of this decay;

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Two half-lifes

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Three half-lifes

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Four half-lifes

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Five half-lifes

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Six half-lifes

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learn more:

Half life brainly.com/question/1695370

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