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Elena-2011 [213]
4 years ago
5

Within the heart, several structures and several layers all play a part in protecting the heart muscle and maintaining cardiac f

unction. the inner layer of the heart is composed of a thin, smooth layer of cells, the folds of which form heart valves. what is the name of this layer of cardiac tissue?
Biology
1 answer:
sp2606 [1]4 years ago
3 0
<span>It is known as myorcardium</span>
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A scientist has a very small sample of DNA. To analyze the DNA, which would be the MOST USEFUL first step for the scientist to f
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B. Use the polymerase chain reaction (PCR) to make multiple copies of the DNA.

Explanation:

The scientist is to analyze a small sample of DNA, the most useful step to start this would be first the use of polymerase chain reaction to make various copies of that DNA sample. PCR is essential and quick process that gives a lot of copies within few hours. It uses the sample or target DNA, according to which the primers are designed. Taq polymerase and DNA polymerase are also used in the process, it consist of various cycles in which copies are made. There are three basic steps 'Denaturation', 'annealing', and 'extension'.

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Plant cells have a cell wall, a large central vacuole, and chloroplasts, but a animal cell does not have those things.

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Centrosome; has a role in Mitosis to seperate chromosomes

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Ribosome; protein synthesis

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