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otez555 [7]
2 years ago
7

Explain the changes that happen in the body before and after exercise

Biology
1 answer:
atroni [7]2 years ago
3 0

Answer:

While exercising, the muscles need additional energy as the breathing rate and volume of each breath increase to bring more oxygen into the body and remove the carbon dioxide produced. If insufficient oxygen is available to the muscles, for instance, the exercise is vigorous and/or prolonged, the heart and lungs are unable to supply sufficient oxygen. Muscles begin to respire anaerobically. Lactic acid is produced from glucose, instead of carbon dioxide and water. Muscles continue to contract, but less efficiently. When a period of exercise is over, lactic acid must be removed, because the body's tolerance to lactic acid is limited. These processes require oxygen. This is why, when the period of activity is over, a person’s breathing rate and heart rate do not return to normal straight away.

Explanation:

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Ludmilka [50]

Answer:

The answer is D: Recombinant DNA is produced by pasting together DNA from two sources

Explanation:

Recombinant DNA, or rDNA, is made by pasting together 2 halves of DNA strands from different sources

8 0
2 years ago
Long legs is dominant L and short legs is recessive l
jonny [76]

Answer:

75% chance

Explanation:

8 0
3 years ago
Mutation is an important mechanism for evolutionary change. Which type of mutations contribute to evolution?
rodikova [14]
Adaptations are the result of evolution in different living organisms. This process occurs amazingly through gene mutation but it takes a very long period in time. Adaptation processes occur to help species survive and thrive in the ecological balance of life. Structural adaptations are physical features of an organism that adapted through time. An example of this are the bills of a bird and the fur of bears that they generally need for their survival; birds for hunting, and bears to protect them from low climate areas.
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Functional or Behavioral adaptations refer to particular things that an organism or organisms do to survive. In the example above, behavioral adaptations that birds do is through certain bird calls and migration, while bears hunt during warmer seasons and hibernate during winter season. </span>
5 0
3 years ago
This is cooking class and I need your help please ​
inessss [21]

1 - c

2 - c

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4 0
3 years ago
Read 2 more answers
Which of the following would be one way a farmer could increase the amount of available nitrogen in his fields without adding a
katovenus [111]

The correct answer is:

Grow a legume crop to support the development of root nodule

The best way that a farmer could increase the amount of nitrogen in his fields without adding synthetic fertilizer is to grow a legume crop to support the development of root nodules. This is because legumes have a symbiotic relationship with bacteria found in the soil. 

Explanation:

Legumes use nitrogen fixing bacteria, specifically symbiotic rhizobia bacteria, within their root nodules to counter the limitation.The plant root cells convert sugar into organic acids which then supply to the rhizobia in exchange, hence a symbiotic relationship between rhizobia and the legumes.

4 0
3 years ago
Read 2 more answers
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