Answer:
Acid , phenol or protein
Explanation:
The ratio of absorbance at 260 and 280nm is what is usually used to assess the purity which a DNA or RNA posses. A ratio of 1.8 is generally accepted as being pure for a DNA sample and a ratio of 2.0 is generally accepted also as being pure for RNA. when the ratio is significantly lower in each case, it indicates that there is presence of protein, phenol or other contaminants.
Explanation:
Number the steps to carry out an investigation:
Answer:
A!!
the sun, which drives the water cycle, heats water in the oceans. some of it evaporates as vapor into the air... most precipitation falls back into the ocean or on two land, where, due to gravity, the precipitation flows over the ground as surface runoff....
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Waves, generated by storms, wind, or fast moving motor craft, can cause coastal erosion, which may take the form of long-term losses of sediment and rocks, or merely the temporary redistribution of coastal sediments; erosion in one location may result in accretion nearby. The study of erosion and sediment redistribution is called 'coastal morphodynamics'. It may be caused by hydraulic action, abrasion, impact and corrosion by wind, water, and other forces, natural or unnatural. .
Answer:
Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that most animals derive their nutrition by <u>ingesting materials</u>.
Explanation:
Unlike plants, both animals and fungi are not capable of producing their own food. Organisms that cannot make their own food are termed as heterotrophs. Heterotrophs consume food by feeding on other organisms.
Both animals and fungi are heterotrophic but their mode of taking food is different. Animals tend to take in food by ingestion i.e by swallowing or absorbing. Whereas, fungi take food externally by releasing enzymes for digestion on the substrates.
