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IRISSAK [1]
4 years ago
15

Many researchers think that the first eukaryotic cells obtained energy for life-sustaining functions from organic compounds. Giv

en this information, which of the following organelles most likely appeared last in eukaryotic cells?
a.plasma membrane
b.chloroplast
c.ribosome
d.nucleus
Biology
1 answer:
astra-53 [7]4 years ago
5 0

Answer: Chloroplast

Explanation:

The presence of chloroplast would have been the last organelle which appeared in the eukaryotic cell. Chloroplast helps in photosynthesis which means prepare food from the inorganic compounds.

But here the cell obtains energy from the organic compounds which states that there is no need of chloroplast in the cell as they obtain energy by hetero tropic mode of nutrition.

Hence, chloroplast is the correct answer.

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Explanation:

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A tall pea plant (Tt) is crossbred with a short pea plant (tt). The following Punnett square shows the separated alleles for two
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The Genetic Code was cracked by several different types of experiments. Some involved the synthesis of an RNA strand (that acted
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A. Repeats of "Alanine-Arginine"

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C. Repeats of Aspartic acid

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RNA: GCG CGC GCG CGC GCG CGC  

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B. The synthetic RNA with UA repeats would have repeats to two codons: UAU and AUA which in turn code for tyrosine and Isoleucine amino acids respectively.  Hence, its polypeptide would have repeats of "Tyrosine-Isoleucine"

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C. The synthetic RNA with GAC repeats would code for polypeptide of aspartic acid only as GAC codes for aspartic acid.

RNA: GAC GAC GAC GAC GAC GAC

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4 0
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.<br> .<br> .<br> .<br> .<br> .<br> .<br><br> .<br> .<br> .<br> .<br><br> ..
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<h3>option A is the correct one </h3>

hope this helps you out

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