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V125BC [204]
3 years ago
15

During exercise, when muscle cells runs out of oxygen, _________builds up in muscles, causing a painful burning sensation

Biology
1 answer:
galina1969 [7]3 years ago
5 0

Answer:

Lactic Acid

Explanation:

In humans, a process called fermentation occurs (when a cell does not have access to oxygen) to produce ATP. A byproduct of this is lactic acid (caused by the deposition of electrons from NADH into Pyruvate.

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weeeeeb [17]

Answer: A: Its fertile oases enabled farmers to grow enough food for themselves and for sale.

Explanation: The Arabia region is a region located within the Arabian desert. A desert is an area of extreme heat, often dry weather condition with barren lands that cannot support agriculture and food production. An oases on the other hand is a region of luscious, cultivate-able land within a desert.

Food is one of the most important basic needs of man and hardly can anyone survive without food for more than twenty days. Hence, the presence of oases within the otherwise dry environment of the Arabia region is a major protection against death from hunger.

Taking a closer look at other options, none of them guarantees food supply and income to the Arabia region unlike food production in oases. Hence, the fertile oases is really the most important factor that serves as protection in the region's history.

Correct option: A

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How does the movement of materials across the cell membrane relate to an<br> organism’s survival?
ioda

I believe it relates because as we know the cell membrane is permeable meaning that allows oxygen, carbohydrates, food to enter the cell but it doesn't allow the entrance of large molecules that harm the cells.

After all the movement around it, matters because for example without food the mitochondria won't be able to create the energy and then with that energy, the nucleus to use it to complete the main the activities of the cell.

Hopefully this what you meant when you asked the question. Have a nice day/evening

8 0
3 years ago
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