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Nataly_w [17]
3 years ago
5

Help mee plzzzzzz THERE IS A ATTACHMENT SO WAIT AT LEAST 30 SECONDS PLZZZZ

Biology
1 answer:
WITCHER [35]3 years ago
7 0
First question is D poor farming practices
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Which of the following functional groups contains only carbon, hydrogen, and oxygen? A) carboxyl group B)amino group C)sulfhydry
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A. carboxyl group

amino - is nitrogen containing
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Why do farmers in South America get abundant crops during El Niño?
puteri [66]

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Hundreds of years ago, South American fishermen observed that every year around December or Christmas, coastal waters of the Pacific became warmer as a current flowed from north to south. This change often meant a smaller fish catch but more rainfall inland that translated to more abundant crop harvest .

Explanation:

...

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In samples of DNA isolated from two unidentified species in bacteria, X and Y adenine makes up 32% and 17%, respectively, of the
Vikki [24]

Answer:

On the basis of Chargaff's rule, in a double-helical DNA, A = T and G = C (Here A means adenine, T means thymine, G means guanine, and C means cytosine. For X, A is given 32%, therefore, T must be 32%, and the leftover 36% is to be distributed equally between G and C. Thus, G = C = 18% each.  

The assumption formed is that the DNA is a double-stranded structure. The species that exhibits higher G + C content in the molecule of a DNA is steadier at higher temperatures as it melts at high temperature. The species Y, which exhibits G + C in total as 66% is the thermophilic bacterium between the two.  

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How might targeting rapidly growing cells explain common chemotherapy side effects such as hair loss and nausea
IrinaVladis [17]

Cancer cells are the cells that divide rapidly than any other cells in the body. The drugs used in chemotherapy work on rapidly dividing cancer cells. Some cells of our body apart from cancer cells also divide rapidly along with the cancer cells such as the cells that line the stomach and the digestive tract. Chemotherapy drugs cannot differentiate the cancer cells and the normal cells so these drugs also attack the normal cells which divide rapidly along with the cancer cells. The drugs also attack the cells that are present in the roots of the hair. So, this results in the hair loss. Hair loss does not occur immediately after the chemotherapy treatment instead it starts after few treatments. The degree of the hair loss after chemotherapy depends on the drug type and process. So when the chemotherapy drugs are used it results in the hair loss and nausea.

Therefore, when chemotherapy drugs attack normal cells including the roots of the hair instead of cancer cells that divide rapidly along with the cancer cells it results in the hair loss and nausea.

3 0
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What refers to the different species found in a given area at a specific time
Lelechka [254]

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