A scientist is trying to determine if a nucleic acid is RNA. What features should the molecule have?

1 answer:

4 0

To fully understand the processes occurring in present-day living cells, we need to consider how they arose in evolution. The most fundamental of all such problems is the expression of hereditary information, which today requires extraordinarily complex machinery and proceeds from DNA to protein through an RNA intermediate. How did this machinery arise? One view is that an RNA world existed on Earth before modern cells arose (Figure 6-91). According to this hypothesis, RNA stored both genetic information and catalyzed the chemical reactions in primitive cells. Only later in evolutionary time did DNA take over as the genetic material and proteins become the major catalyst and structural component of cells. If this idea is correct, then the transition out of the RNA world was never complete; as we have seen in this chapter, RNA still catalyzes several fundamental reactions in modern-day cells, which can be viewed as molecular fossils of an earlier world.

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Your teacher describes an organism that digests its food externally before absorbing it. You also find out that this organism ca

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According to the context, fungi is an organism that digests its food externally before absorbing it and it cannot move.

<h3>What are fungi?</h3>

They are living beings belonging to the fungi kingdom: molds, yeasts and mushrooms.

These lack mobility and senses, like plants, and they consume available organic matter (heterotrophic nutrition).

Therefore, we can conclude that according to the context, fungi is an organism that digests its food externally before absorbing it and it cannot move.

Learn more about fungi here: brainly.com/question/10499247

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Answer:

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explanation:

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