A researcher has discovered an unusual organism deep in the crust of the Earth. She wants toknow whether it is prokaryotic or eukaryotic. Imagine that she has rapid tests to determine whether the following molecules are present: DNA, RNA, phospholipids, and the proteins that form microtubules. Which test would you advise her to use and why?

A. Test for DNA, because only eukaryotes have a nucleus.

B. Test for RNA, because only eukaryotes have ribosomes.

C. Test for microtubule proteins, because only eukaryotes have microtubules.

D. Test for phospholipids, because only eukaryotes have phospholipids.

Question

Biology

Aisha Guerra

29 January, 02:41

A researcher has discovered an unusual organism deep in the crust of the Earth. She wants toknow whether it is prokaryotic or eukaryotic. Imagine that she has rapid tests to determine whether the following molecules are present: DNA, RNA, phospholipids, and the proteins that form microtubules. Which test would you advise her to use and why?

A. Test for DNA, because only eukaryotes have a nucleus.

B. Test for RNA, because only eukaryotes have ribosomes.

C. Test for microtubule proteins, because only eukaryotes have microtubules.

D. Test for phospholipids, because only eukaryotes have phospholipids.

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Answers (1)

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Chester · Answer 1

C. Test for microtubule proteins, because only eukaryotes have microtubules.

Explanation:

Although some bacteria have similar cellular components, microtubules are only found in eukaryotic cells. This is why it is most likely that if it finds the components that form microtubules, the unidentified organism belongs to the group of Eukaryotes.