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Neporo4naja [7]
2 years ago
7

Why do Quarternary consumers occupy the top position in the pyramid of energy

Biology
1 answer:
Reil [10]2 years ago
8 0

Explanation:

Quaternary consumers, meanwhile, occupy the top position in the pyramid of energy because nothing preys upon them in turn. The prey of one species might also be the predator of another species.

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How did the discovery of ribozymes assist in creating a plausible model for the prebiotic origin of life?
aleksley [76]
Ribozymes are biochemically too complex to have ever produced themselves naturalistically. They are an intermediate cellular functioning assembly that cannot survive on its own and they are too restrictive in function to enable metabolism and reproduction at the level of criticality to be considered plausible for life.

Their simplicity relative to RNA and DNA make them an attractive possibility, but they are not strategic enough, robust enough or in any producible using naturalistic processes.
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3 years ago
According to the fossil record, which of these evolved after amphibians? Select two options.
Juli2301 [7.4K]

Answer:

The correct answers are Reptiles and Mammals.

Explanation:

I took the test on ed and got it correct

8 0
3 years ago
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The African clawed frog (Xenopus laevis) is allotetraploid, likely as a result of an interspecies mating long ago, followed by a
stepladder [879]

Explanation:

Xenopus laevis is allotetraploid: it has 2 sets of homologous chromosomes originally from one species and 2 sets of homologous chromosomes originally from another species, making a total of 4 sets of chromosomes. During meiosis, every chromosome has another homologous one with which it can pair, producing viable gametes that have the complete genetic information of the species.

Mules, however, are allodiploid: they have one set of chromosomes from a donkey and another set from a horse, making a total of 2 sets of chromosmes. But those two sets are not homologous, so during meiosis the chromosomes can't pair and the gametes will have errors that make them inviable, making mules sterile

7 0
3 years ago
Explain what the tyoes of mutations do ?
olga_2 [115]
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4 0
3 years ago
Give an example of what would be membrane enclosed organelles in a eukaryotic cell.​
Gennadij [26K]

Answer:

Mitochondria, endoplasmic reticulum, golgi apparatus, or chloroplasts would all be an example.

Explanation:

Unlike prokaryotic cells, eukaryotic cells have a nucleus enclosed in a plasma membrane, as well as the mitochondrias, endoplasmic reticulums, golgi bodies or apparatuses, and chloroplasts.

3 0
2 years ago
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