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xz_007 [3.2K]
3 years ago
6

Can someone plz help me it will really mean everything thank you

Biology
1 answer:
Mkey [24]3 years ago
7 0
From this picture I’m guessing the answer is cells

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Why does the rate of heart beat increases during exercise?
kherson [118]

During exercises, our muscles needed energy for contractions. The heart pumps more rapidly and more powerfully during this time for a few reasons.


First, more oxygen and nutrients like glucose can be transported to the heart. Muscle cells uses oxygen and glucose for aerobic respiration to generate energy.


Secondly, more carbon dioxide and waste can be transported away from the muscles. Waste products from aerobic respiration includes carbon dioxide or water etc. The faster the heart pumps, the faster the blood gets transported so more waste can be carried away.


Thirdly, lactic acid can be carried away too. When oxygen supply is not enough, the cells undergo anaerobic respiration to generate energy. This type of respiration does not require oxygen, but a waste product called lactic acid is produced. Lactic acid must be carried away from cells because they're harmful. Therefore, the faster the heart pumps, the more lactic acid gets carried away.


Last but not least, heat can be carried away too. Part of the energy generated is turned into heat. Therefore, in order to help us cool down, blood travels fast to carry heat away from the heat generating muscle cells.

5 0
3 years ago
Read 2 more answers
Which organism would have the most biomass<br> Ants<br> Bager<br> Wolf
Gelneren [198K]

Answer:

ANTS

Explanation:

Is this right? Hope it is

7 0
3 years ago
Hemophilia is a gender-linked blood disorder in humans. The gene responsible for it is gene-linked recessive, meaning it is pres
Elis [28]
The frequency will be one in a ten thousand, in a real life situation. The X-linked recessive disorder has the same frequency as that of its frequency in the men. The frequency in women is close to zero, and in 5000 men, it will be one, so in total, the allele frequency will be 1/10000.
When we use a Punnett sqare, it comes out that 0% of the females will have he disease. But, as 50% of the eggs of the mother will  carry a recessive allele, 50% of the male offprings bear the cahnces of being affected, i.e., 25% of the total offsprings, which mean 2500 male children bear the chance of having Hemophilia. 
8 0
3 years ago
Where do tornados form?
yulyashka [42]
<span>B: within hurricanes that come from Canada</span>
6 0
3 years ago
Read 2 more answers
Which parts of the earth's surface receive less direct, less intense solar radiation?
Ahat [919]

On Earth's surface, less direct and less intense solar radiation are received by the<em> poles.</em>

Answer: Option 2

Explanation:

Various parts of Earth's surface get different measures of sunlight.  The part which is closer to the sun receives more radiation than the part which is far away.

The Sun's beams strike Earth's surface most <em>directly</em> at the<em> Equator </em>as it is near to the sun when compared to the<em> poles</em> in which it strikes the surface at an <em>inclination</em>.

6 0
3 years ago
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