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Citrus2011 [14]
3 years ago
12

Why is the circulatory system is considered a system

Biology
1 answer:
vitfil [10]3 years ago
7 0

Answer:

hope it helps

Explanation:

The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

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Viruses mutate and can become more pathogenic to humans. Some viruses may originate in other animals, such as birds, bats or pig
Norma-Jean [14]

Answer:

Viruses may be defined as the organisms that shows the border line between the living and non living organisms. Viruses can only replicate when they enter in the body of a particular host.

Viruses are pathogenic for humans and can cause deadly diseases like AIDS. The pandemic condition of virus mainly depends on the the matter of time. The appearance of the disease condition before the occurrence of the another  disease.

7 0
3 years ago
What disease is caused by misshaped red blood cells that prevent oxygen from properly reaching other parts of the body?
NikAS [45]
One of the possible answers is sickle cell.

8 0
3 years ago
What causes wind?
slega [8]

Answer:B

Explanation:

4 0
3 years ago
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The MAIN purpose of photosynthesis is to
Licemer1 [7]
Convert carbon dioxide gas to oxygen gas.

produce the food the plant needs to grow.
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8 0
3 years ago
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The concentration of a biomolecule inside a rod-shaped prokaryotic cell is 0.0037 m. calculate the number of molecules inside th
Talja [164]

First, let calculate the volume of the rod shaped-bacteria:

S = length of the bacteria * surface of its side = 4.1 * (0.45 *0.45 * 3.14) = 2.6 µm3

Now, let's convert the moles into molecules (with Avogadro's law):

0.0037mol/L = 0.0037 * 6.023 *10^23 = 2.22 *10^21 molecules / L

Now let's convert The volume and the concetrnation into µm3 (molecules / µm3)

1 L = 1 dm3 = 1000 cm3 = 1000000 mm3 = 10^9 µm3

so 2.22 *10^21 molecules / L = 2.22 10^ 12 molecules / µm3

The answer is  2.22 10^ 12 molecules / µm3

8 0
3 years ago
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