AP Biology help » Cellular biologic » Cell structures » expertise Eukaryotic and also Prokaryotic differences
Explanation:

Prokaryotes do have actually organelles, yet not complex, membrane-bound organelles. As a result, the membrane-bound mitochondria would not be seen in prokaryotes. Remember the plants room eukaryotes, and also have cell walls as with prokaryotes. In addition, prokaryotes have actually ribosomes as well as DNA.

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Explanation:

Prokaryotes carry out not have actually membrane-bound organelles, such as mitochondria or an absorbent reticulum.

Flagella room hair-like frameworks that allow the cell to move, and also are current in both prokaryotes and also eukaryotes. Return prokaryotes don"t have multiple chromosomes like eukaryotes, they perform still have actually DNA in the kind of a cyclic chromosome. Ribosomes space not bound by a membrane, and are crucial to the procedure of translation, which create proteins in the cell. Prokaryotes and also eukaryotes possess ribosomes in bespeak to kind functional proteins.


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Example concern #2 : Cell structures


Where walk the electron transfer chain happen in prokaryotic cells and eukaryotic cells, respectively?


Possible Answers:

The mitochondria; the to move membrane


The mitochondria; the mitochondria


The chloroplasts; the cellular membrane


The chloroplasts; the mitochondria


The moving membrane; the mitochondria


Correct answer:

The cellular membrane; the mitochondria


Explanation:

Prokaryotes, such together bacteria, do not save membrane-bound oribel such together the nucleus, mitochondria, and chloroplasts that we could find in a eukaryotic cell. Since we recognize the electron move chain (ETC) is necessary in providing cellular energy, prokaryotes must still perform some form of this process. The complexes that the and so on are found in the yes, really cellular membrane that separates the cell from the atmosphere in prokaryotes, while lock are uncovered in the inner mitochondrial membrane in eukaryotes. Eukaryotes space then maybe to generate a proton gradient between the 2 mitochondrial membranes within the intermembrane space, when prokaryotes deserve to generate a gradient in between the cell membrane and also cell wall.


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Example question #1 : understanding Eukaryotic and Prokaryotic differences


Prokaryotes and also eukaryotes are identified by a series of differences. I beg your pardon of the complying with structures is discovered in one course of cell, but not the other?


Possible Answers:

Plasma membrane


Ribosomes


Cell wall


Mitochondria


Correct answer:

Mitochondria


Explanation:

Prokaryotes execute not have membrane-bound organelles, so they would certainly not have mitochondria.

Cell walls and also plasma membranes are discovered in both bacteria (prokaryotes) and also plants (eukaryotes). Ribosomes space not tied by a membrane, and are largely composed of rRNA; lock are used for protein synthetic in both prokaryotes and also eukaryotes.


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Example concern #1 : Cellular biologic


Which structure is existing in prokaryotes cells, but not eukaryotic cells?


Possible Answers:

A cell membrane


Numerous organelles like mitochondria and also lysosomes


A nuclear envelope


80S ribosomes composed of one 60S and also one 40S subunit


A circular, double-stranded molecule of DNA as its main genetic material


Correct answer:

A circular, double-stranded molecule that DNA together its main hereditary material


Explanation:

In general, prokaryotes cells space smaller and less complex than eukaryotic bio cells. They lack membrane-bound oribel (such together mitochondria) and also contain a nucleoid region instead the a membrane-bound nucleus. Lock do have actually ribosomes, but those are little (70S) and composed that one 30S and one 50S subunit. Just eukaryotic ribosomes are 80S. Finally, both prokaryotes and eukaryotes space encased in cell membranes.

One difference between prokaryotic and also eukaryotic cells is the organization and storage of hereditary material. Both usage DNA in the double-helix structure. In eukaryotes, this DNA is save as chromatin or chromosomes in ~ the nucleus, however in prokaryotes it is stored in a circular bundle known as the newly closed in the cytoplasm.


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Example question #3 : Cellular biological


Prokaryotic cells have __________.


Possible Answers:

mitochondria, yet no nucleus


a Golgi apparatus, however no membrane-bound nucleus


a new closed region, yet no plasma membrane encasing the cell


a plasma membrane encasing the cell, however no membrane-bound organelles


a membrane-bound nucleus, but no lysosomes


Correct answer:

a plasma membrane encasing the cell, but no membrane-bound organelles


Explanation:

When compare prokaryotes to eukaryotes, the main reality to psychic is that prokaryotes execute not contain membrane-bound organelles. This way they have actually no mitochondria, Golgi apparatus, or absorbent reticulum. They additionally lack a membrane-bound nucleus, although they execute have hereditary material located in a nucleoid region. Prokaryotic cells are surrounded through a plasma membrane, and also some species of bacteria have cell walls as well.


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Example question #1 : Cellular biologic


Which structure could be discovered in a prokaryotes cell?


Possible Answers:

Centrioles


Rough absorbent reticulum


Mitochondria


Plasma membrane


Peroxisomes


Correct answer:

Plasma membrane


Explanation:

Prokaryotic cell differ from eukaryotic cells in that they lack any kind of membrane-bound organelles, including a nucleus. Instead, prokaryotes cells simply have actually an external plasma membrane, DNA newly closed structure, and also ribosomes.

Rough endoplasmic reticulum, peroxisomes, and also mitochondria are all tied by their very own plasma membranes, and are only uncovered in eukaryotic bio cells. Centrioles are a ingredient of the cytoskeleton of eukaryotic cells, yet are not discovered in prokaryotes.


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Example concern #1 : understanding Eukaryotic and Prokaryotic distinctions


A group of researcher in a laboratory have discovered what they think to it is in an unknown organism. They notice that this organism lacks a nuclear membrane and mitochondria. Making use of this information, i beg your pardon of the complying with structures would this organism most likely possess?


Possible Answers:

Chloroplasts


Endoplasmic reticulum


Ribosomes


Cilia


Lysosomes


Correct answer:

Ribosomes


Explanation:

The biology is most likely a prokaryotic organism, since it lacks a nuclear membrane and mitochondria. Prokaryotes absence all membrane-bound organelles, including nuclei, mitochondria, absorbent reticulum, chloroplasts, and lysosomes.

Both prokaryotes and eukaryotes contain ribosomes. Ribosomes space not membrane-bound, and are mainly composed the rRNA. Prokaryotes call for ribosomes in order come synthesize proteins.

Cilia room composed that microtubules. While numerous prokaryotes have actually cilia, we cannot draw any kind of conclusions there is no knowing an ext about the identity of the organism.


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Example concern #1 : Cell frameworks


A prokaryotes cell has which the the following? 


Possible Answers:

Ribosomes


Microtubules 


Nucleus 


Endoplasmic reticulum 


Golgi apparatus 


Correct answer:

Ribosomes


Explanation:

Prokaryotic cells are straightforward cells that absence membrane-bound nuclei and complex organelles. Absorbent reticulum, microtubules, and the Golgi device are unique to eukaryotic bio cells, and also will no be found in prokaryotes. Prokaryotes do, however, save ribosomes, though smaller than the ribosom in eukaryotic cells. Prokaryotes and eukaryotes room both qualified of the main processes of the central dogma: DNA replication, transcription, and also translation. For this to be possible, prokaryotes have to contain DNA, warrior proteins, RNA, and also ribosomes.


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Example concern #1 : Cell frameworks


What structure have the right to be uncovered in all living cells?


Possible Answers:

Cell wall


Nucleus


Mitochondria


Nucleolus 


Ribosomes


Correct answer:

Ribosomes


Explanation:

Unlike eukaryotes, prokaryotes have actually no membrane-bound organelles. This method that they absence a nucleus, mitochondria, and other advanced cell structures.

All cells rely on protein materials in order to function. Protein synthetic takes place on ribosomes, which deserve to be found in all cell types. In prokaryotes, ribosome are free floating the cytoplasm; in eukaryotes, ribosomes deserve to be free floating in the cytoplasm, bound come the rough endoplasmic reticulum, in mitochondria, or in chloroplasts.


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