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katrin2010 [14]
3 years ago
7

How are prokaryotic and eukaryotic different

Biology
2 answers:
ehidna [41]3 years ago
6 0
Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle, while Eukaryotic cells contain membrane-bound organelles, including a nucleus.
vlada-n [284]3 years ago
3 0
Prokaryotic cells have no defined nucleus, the 'brain' of the cell just floats around in the cytoplasm. Eukaryotic cells contain the DNA strands within a nucleus.

Prokaryotic cells also came first, and are less evolved.<span />
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Why do most biologists believe that true commensalism does not exist?
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Answer:

the relationships are probably mutual or parasitic

Explanation:

The argument of most scientists when it comes to commensalism is that the likelihood of a relationship between two different organisms, where one of the organisms to be completely unaffected is low. They propose that their relationship, although not obvious, is more likely to be mutualistic or parasitic at best.

3 0
3 years ago
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What are chromosomes? When do chromosomes form?
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Hope this helped! :)

7 0
3 years ago
at short focusing distances, ciliary muscles contract. what effect do these contractions have on the suspensory ligaments?
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At short focusing distances, ciliary muscles contract causing the suspensory ligaments to tighten.

The ciliary muscle is an integral muscle of the eye that is constructed as a ring of smooth muscle in the middle layer of the eye, the uvea (vascular layer). It regulates the passage of aqueous humor into Schlemm's canal and governs accommodation for observing objects at different distances.

A suspensory ligament is a ligament that provides support to a body part, particularly an organ. The suspensory ligament protects the fetlock from hyperextension (i.e., falling too low) during exercise. The ligament begins in both the fore and hindlimbs at its connection to the back of the upper cannon bone.

When the ciliary muscle relaxes, its diameter increases; when the suspensory ligaments tighten, the lens becomes thinner. This occurs when concentrating on a celestial object. When the ciliary muscle contracts, the lens becomes much more circular and has more focusing power because the pressure on the zonular fibers is reduced. When the ciliary muscles relax, these fibers contract, pulling the lens out and creating a flatter shape with less focusing power 

For more information on suspensory ligaments, visit :

brainly.com/question/12999415

#SPJ4

6 0
1 year ago
What is the geologic column?
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The answer should be A
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