đ» Big Picture: What's the difference between us and bacteria? Well, a lot of things, but they all come down to the major division between prokaryotes (them) and eukaryotes (us). Find out what sets us apart at the cellular level in this guide! Show
Youtube GuideIntroductionAll living things are made up of cells. They can be as small as a diatom (which has one cell), or as big as a blue whale (which has 100 quadrillion cells) (yes, we said quadrillion) (no, we didnât know that was a real number until today). Cells fall into one of two categories: prokaryotic or eukaryotic. But who cares, right? A cellâs a cell. Well, not necessarily. While prokaryotic cells and eukaryotic cells have some things in common, there are more differences between them than similarities. Letâs explore below. Lesson Objectives
Prokaryotic CellsProkaryotes are small, simple, single-celled organisms (unicellular) of the domains Bacteria and Archaea They range in size from 0.1-5.0 micrometers, and their most defining feature relative to eukaryotes is that they lack membrane-bound organelles, including a nucleus. It doesnât mean that they donât have anything going on in there though. Instead of being divided by membranes, prokaryotic cells are divided by specialized regions that are sorta-kinda like organelles (for all intents and purposes at least). Instead of a nucleus, their DNA bundles together in a central region that we refer to as the Nucleoid. Speaking of DNA, theirs also has some defining features that set it apart from eukaryotes. As a refresh, eukaryotic DNA is double-stranded, linear, and found within the nucleus. Prokaryotic DNA is also double-stranded, but itâs circular and found within the cytoplasm instead. Some other features you might find in a prokaryotic cell include:
Some examples of prokaryotes include cyanobacteria (also called blue-green algae), Streptococcus bacterium (the bacteria that gives you strep throat) (boooo streptococcus đ), and Escherichia coli bacterium (more commonly known as E. coli) (boo you too đ). Eukaryotic CellsEukaryotes are organisms of the domains Protista, Fungi, Plantae, and Animalia and range in size from 10 micrometers to 100. Unlike prokaryotes, they do have membrane-bound organelles (including a nucleus). Eukaryotic cells are larger and more complex than prokaryotic cells. Theyâre typically multicellular, but there are a handful of examples of single-celled eukaryotes like phytoplankton, zooplankton, and protozoa. Unlike prokaryotes, eukaryotic DNA is double-stranded, linear, and found within the membrane-bound Nucleus. It exists as entangled strands called Chromatin until a cell is ready to divide, at which point itâs packaged into tightly woven structures called Chromosomes. Eukaryotes are typically divided into two categories: plants and animals (though they can also be protists and fungi). While they have many similarities, there are a few additional features found in plant cells that are not found in animal cells. Weâll go over those they have in common and those they donât below. Plants & Animals:
Just Plants:
Some examples of eukaryotes include flowers (plants), elephants (animals), mushrooms (fungi), and amoebas (protists). Whatâs the Difference?Now that weâve gone over the basics of prokaryotic and eukaryotic cells, the differences between them are a lot clearer. Letâs summarize below:
Whatâs the Same?Letâs not forget that as different as they are, prokaryotic cells and eukaryotic cells do have some common ground between them (maybe weâre not so different from algae after all ).
đĄ Summary
FAQs:1. Where is DNA stored in prokaryotic cells? In the nucleoid, the central region of a prokaryotic cell. 2. Are human cells prokaryotic or eukaryotic? The nucleus, which houses the DNA, or genetic material, cytoskeleton, organelles surrounded by cytoplasm, and nucleus enclosed by nuclear envelope are traits seen in human cells and hence makes our cells eukaryotic cells. 3. What are the primary differences between prokaryotic and eukaryotic cells? The presence or absence of membrane-bound organelles and a nucleus, and the structure of their DNA. 4. What are the shared features between prokaryotic and eukaryotic cells? Both prokaryotes and eukaryotes have DNA, a plasma membrane, cytoplasm, and ribosomes. 5. What is the difference between prokaryotic and eukaryotic DNA? Prokaryotic DNA is double-stranded, circular, and found in the nucleoid while eukaryotic DNA is double-stranded, linear, and stored within the nucleus. We hope you enjoyed studying this lesson and learned something cool about the Difference between a Eukaryotic and Prokaryotic Cell! Join our Discord community to get any questions you may have answered and to engage with other students just like you! Don't forget to download our App to experience our fun, VR classrooms - we promise, it makes studying much more fun! đ Sources
How do I compare prokaryotic and eukaryotic cells?Comparing prokaryotes and eukaryotes
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information.
What are 5 differences between prokaryotic and eukaryotic cells?Thus, two types of cells are found in the organisms: eukaryotic and prokaryotic depending on whether cells contain membrane-bound organelles or not.
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What is the difference between Prokaryotic and Eukaryotic Cells?. What are the main differences between prokaryotes and eukaryotes choose two answers?What are two major differences between prokaryotic and eukaryotic cell structures?
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. What is the difference between prokaryotic and eukaryotic cells give an example of each?Eukaryotic cells contain a nucleus and organelles bound by plasma membranes. Fungi, plants, and animals are made of eukaryotic cells (eukaryotes). Prokaryotic cells do not have a membrane-bound nucleus or organelles. All bacteria and members of Archaea are made of prokaryotic cells (prokaryotes).
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