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LuckyWell [14K]
3 years ago
13

Which of these is a physical change  in matter

Biology
1 answer:
WARRIOR [948]3 years ago
5 0
I believe the answer would be letter B.<span />
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Which molecule is shown a magenta (pink/purple)
Cerrena [4.2K]

Answer: pink

Explanation:

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3 years ago
What is the difference between anaerobic and aerobic?<br> HELP ME. thanks
Vlad1618 [11]
Basically:
Anaerobic: takes place in an environment without oxygen
Aerobic: takes place in an environment with oxygen
Hope this helps!
~Chrys

3 0
3 years ago
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15 points!
WINSTONCH [101]
D. <span>They all contain carbon as an important part of their structure. Hope this helps you!! =')</span>
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Jon likes hiking. He observes that whenever he hikes up a hill he breathes heavier than when he is on flat ground. Which 2 state
Alekssandra [29.7K]

Answer:

-Sensors in the brain detect a lack of oxygen.

-The muscles in his body need more energy and therefore more oxygen.

Explanation:

-Sensors in the brain detect a lack of oxygen.

-The muscles in his body need more energy and therefore more oxygen.

-The body has too little carbon dioxide to maintain function.

-The body is using carbon dioxide instead of oxygen to make energy.

-Blood pressure has decreased, so less blood is being pumped to the muscles.

<em>The correct answer would be that </em><em>sensors in the brain detect a lack of oxygen</em><em> and t</em><em>he muscles in the body of Jon need more energy and therefore, more oxygen.</em>

At sea level, the atmospheric pressure easily allow oxygen to permeate the cells of the lung and diffuse into the blood. At high altitudes, air pressure is generally lower and permeation/diffusion through the cells of the lung into the blood becomes difficult.

<u>Without adequate oxygen, the body cannot generate energy needed for physical activities of muscles. Consequently, the sensors in the brain detect a lack of oxygen and the body system reacts by breathing heavily to compensate for the oxygen shortage.</u>

6 0
3 years ago
Howard is explaining the process by which DNA determines the structure of proteins. His explanation includes this statement. "Th
andrew-mc [135]

Answer:

Transcription and RNA processing (splicing)

Explanation:

Although Howard is almost right, the DNA sequence does not precisely relate to the protein sequence. First of all, the DNA is transcribed to an primary mRNA molecule. Bur before the mRNA is ready to be translated into an amino acid sequence, it must be processed into a mature mRNA.

This includes adding a 3' poly A tail, and a 5' cap, and importantly for this question, splicing.

Splicing is the removal of non protein coding intermediate sequences called introns from the protein coding regions (exons) of a primary mRNA. This means that lots of the DNA sequence is not dictated by the final protein, as many of the intervening sequences have been removed by splicing.

8 0
3 years ago
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