What scientific tool would be the most helpful when measuring the temperature of a substance that is undergoing a phase change?

Biology

2 answers:

choli [55]3 years ago

4 0

a thermometer is the correct answer

Allisa [31]3 years ago

3 0

A thermometer may be used as a scientific tool for recording the temperature changes in substance, that is undergoing the phase change. For example, we can measure the temperature of ice which is melting down and becoming liquid, from solid.

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What is the role of the centrioles in cell division?

jonny [76]

The centrioles help in the information of the spindle fibers that separate the chromosomes during cell division.

8 0

3 years ago

quizlet chromosomes are composed of: please choose the correct answer from the following choices, and then select the submit ans

Anna11 [10]

Chromosomes are composed of deoxyribonucleic acid (DNA) mole

There are mainly two molecules that function as genetic material in living organisms.

These are ribonucleic acid(RNA) and deoxyribonucleic acid(DNA).

The organisms having DNA as genetic material require packaging of DNA as it is a long polymer of deoxyribonucleotides.

In the case of human beings, the length of DNA in a cell is approximately 2.2 meters which is very large as compared to the size of the nucleus( approximately 10^-6 meters).

So, the DNA has to be made compact for it to be present inside the nucleus of a cell.

Therefore, the DNA present inside the nucleus of a cell undergoes coiling and compaction through several stages before finally becoming a chromosome, which is shown in the adjoining diagram.

Thus, chromosomes are composed of deoxyribonucleic acid (DNA) molecules.

To know more about "DNA Packaging", refer to the following link:

brainly.com/question/14702559?referrer=searchResults

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