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3 years ago

Please help me

Biology

1 answer:

Ne4ueva [31]3 years ago

3 0

Answer:

A) Identify the Dependent and Independent variables

The Independent variable is Temperature.

The Dependent variable is the seeds. The dependent variable is the variable that is being studied.

B) Calculate the average height of the seedlings in tube C.

To find the average, you must add up all of the heights and divide by the number of seedlings.

3.4 + 4.5 + 2.5 + 3.7 + 2.8 + 4.4 + 4.3 + 2.9 + 2.1 + 3.7 = 34.3

34.3 ÷ 10 = 3.43 cm

C) Conclusion

The seedlings in tube C grew much taller than the seedlings in tubes A and B.

This means that seedlings germinate better in warmer temperatures.

D) Why does Temperature affect Germination?

The temperature of the climate affects the dampness of the cotton wool. Moisture is key to germinating seeds. Seeds like a moist but not soggy environment caused by the correct temperature.

E) How could the experiment be better controlled?

The light levels in this experiment varied, but were not accounted for in the calculations.

It would have been better to keep them all under the same amount of light in order to keep the experiment accurate.

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Answer:

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b) 3 cases

Explanation:

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3 years ago

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Tomtit [17]

Explanation:

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sp2606 [1]

Answer:

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Which chemical or chemicals inhibit the activity of dnases during dna isolation?

sergij07 [2.7K]

EDTA inhibits the activity of DNase during DNA isolation process.

DNase is an enzyme which degrades DNA using divalent metal ions like Mg^{2+} . These metal ions act as cofactor for the proper functioning of DNase.

EDTA chelates the divalent metal ions and thus does not allow DNase to access them.

Therefore in this way DNA is prevented from degradation during its isolation.

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3 years ago