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stich3 [128]
3 years ago
7

Pls help asap im timed

Biology
1 answer:
Kaylis [27]3 years ago
3 0

Answer:

B. A small fraction of the energy is transferred to higher trophic levels, majority stays in the lower trophic levels

Explanation:

Energy transfer between trophic levels is insufficient. When an organism is eaten by another organism, not all of the biomass of prey forms the biomass of the predator. Majority of the energy is released into environment during cellular respiration. Some of the matter also remains undigested and is not used by the predator. Thus, only 10% of energy available at one level is transferred to the next level. So when we keep on moving up in a food chain, energy available keeps on decreasing.

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Kobotan [32]

The process of fusing two or more DNA molecules to produce a hybrid is known as recombinant DNA. Restrictions endonucleases and ligases are two classes of enzymes that enable the technique.

When a restriction endonuclease detects a particular DNA sequence, it makes cuts inside or near that sequence. The recognition sequence of a restriction enzyme will haphazardly appear on every (1–4)n bases along a random DNA chain. The equation states how many fragments ends (measured in moles) are produced when a restriction enzyme cuts DNA.

Moles of DNA ends =2x(grams of DNA)/(number of bp)(660 g/mol / bp).

The equation describes how many ends are produced when circular DNA is digested by a restriction enzyme.

Mole ends=2x(moles DNA)x number of restriction sites.

The following equation can be used to determine how many ends are produced during the digestion of a linear molecule by a restriction endonuclease.

Mole ends=2x(molesDNA)number of restriction sites +[2x(moles of DNA)].

learn more about DNA brainly.com/question/2131506

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Which opportunistic infection complicates human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS)?
marishachu [46]

Answer:

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This nutrient is not abundant, but it is essential to life. It is part of DNA and RNA and a component of bones and cell membrane
Vlada [557]
Phosphorus. It's not abundant, but it's important. There are traces of it in our bones and in the "phospho-lipid bilayer" of the membrane.

Hope that helps!
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the answer is B.


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