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mars1129 [50]
4 years ago
14

Why the circulatory system is considered to be a closed system?

Biology
1 answer:
Goshia [24]4 years ago
5 0

Explanation:

human have closed circulatory system. this means blood is always enclosed in the vessels  and the heart while circulating throughout the body IN this type of system blood is pumped by heart through arteries and veins and does not fill the body cavities thats why the circulatory system is considered to be a closed system

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Lynna [10]

Answer:

A. a protein

Explanation:

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Proteins are consist of multiple numbers of amino acids and the twisting and folding amino acids provide a unique identity to enzymes. Not all the proteins are enzymes but all the enzymes are proteins.

For example: Trypsin, Pepsin, and Lipases.

Hence, the correct option is "A. a protein".

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3 years ago
According to the lab safety sheet, which of the following is a potential hazard that will be present in the lab room during the
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Answer:

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The biosafety sheet helps in featuring the epidemiology of bacterial culture, transmission mode, availability of medical interventions, suggested biosafety levels, etc. So the right answer is a.

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