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4
votes
1answer
43 views

Do all prokaryotes have ATP synthases and an electron transport chain?

I was looking this up and I'm wondering if so far I'm correct about the following: For the most part eukaryotes do aerobic respiration, which involves glycolysis, the Krebs cycle and oxidative ...
3
votes
1answer
57 views

Why are plant cells rectangular and animal cells spherical shaped?

Is that because the plant cells have cell walls and animal cells don't, or is there a function performed by the different shapes? Perhaps round shapes assist the movement of cells?
3
votes
2answers
56 views

Why does the gc content deviate from 50% in prokaryotes

I have read quite some articles but I can't figure out the main reason for gc content deviation in prokaryotes. In eukaryotes I can understand it, because the genome isn't composed at random, like ...
0
votes
0answers
16 views

Separate replication origin and terminus vs making them one and the same

The classical picture of bacterial reproduction has a replication origin on one side of the circular chromosome and a replication termination area on the opposite end. This essentially creates two ...
0
votes
0answers
12 views

Are there any monomeric repressors in prokaryotes?

I'm looking for a monomeric repressor protein in E. coli, but all of the usual repressors are homodimers or tetramers. Are there any known prokaryotic repressors that repress as a monomer?
2
votes
1answer
179 views

Chemoautotrophic eukaryotic cells?

There are heterotrophic prokaryotes, and there are autotrophic prokaryotes. In the autotrophic prokaryotes category, there are photoautotrophic prokaryotes and chemotrophic prokaryotes. Are there ...
1
vote
2answers
214 views

The Ancient Kingdom of Monera

Why exactly were bacteria and archaea kingdoms separated from the now unused kingdom of Monera? Aren't they the same? They are both prokaryotes, so what is the difference?
3
votes
1answer
2k views

Pros/cons: linear vs. circular DNA [duplicate]

Why did Eukaryotes evolve to have linear DNA and not circular like Prokaryotes? What are the pros and/or cons?
3
votes
2answers
1k views

Does osmosis take place in prokaryotic cells?

As far as I know, osmosis occurs in Eukaryotic cells, and I'm wondering if it could take place in prokaryotic cells too.
0
votes
1answer
39 views

How is bacterial plasma membrane made?

Eukaryotes have ER which manufactures plasma membrane of cells. How is prokaryotic plasma membrane made ? What is the pathway and which enzymes are involved ?