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Sergeeva-Olga [200]
3 years ago
11

You have examined several body systems that rely and work with each other in order function properly. One very important task th

at amphibians and all living things need is to efficiently exchange gases in order to survive. Explain in a brief essay how the cardiovascular system and respiratory system work with each other based on your experience and observations from this virtual lab.
Biology
1 answer:
Llana [10]3 years ago
3 0
The task of the respiratory system is the exchange of Oxygen and Carbon Dioxide within the body; however, the respiratory system alone has no mechanism for the transfer of oxygen from the lungs to the body for absorption and transfer of carbon dioxide from the body for expulsion. The cardiovascular system assists in this by moving oxygen-saturated blood from the lungs to different parts of the body and carbon dioxide rich blood from the body to the lungs.
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<em>Propoxur</em>

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Definition of Uniformitarianism
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the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.

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A structural gene is Choose one: A. a string of nucleotides that can be decoded by an enzyme to produce a protein. B. an organis
aivan3 [116]

Answer:

C. a string of nucleotides that can be used as a template to produce a RNA that codes for a protein.

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A gene is a specific sequence of DNA containing genetic information required to make a specific protien and  is a string of nucleotides (DNA in cells) that can be used as a template to produce a RNA (by transcription) that codes for a protein. The produced RNA might be the end product (for example some transfer RNA's) or might be further translated into a protein. An organism's entire complement of DNA is its genome.

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3 years ago
In England, peppered moths have two color forms, light and dark. Dark is a dominant trait. Until about 1850, the majority of
ehidna [41]

Theory of natural selection by Charles Darwin explains the moth appearance in England. The theory of genetics describes this as a mere shift of trait due to environmental factors.

<h3><u>Explanation:</u></h3>

Peppered moths are the moths found in England from a long time ago. The environment before the industrial revolution was pure and pollution free, which led to the growth of the white variety of moths as they were able to camouflage better with the bark of the trees from their hunters. The white trait were the parents, and fertilization between the two recessive traits gave rise to the recessive traits only.

But with the industrial revolution, the pollution increased to a huge extent, leading to deposition of smokes and soot on trees bark where white variety of the white moths got easily recognizable. This led to the black moths which now can camouflage better. Thus the nature selected black variety over white variety for better survival, and the white variety reduced dramatically.

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3 years ago
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3 years ago
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