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How many cells in 1mg of E. coli cell?
There are 2.547 millions of cells in 1 mg of E coli cells.
How many cells does escherichia coli have?
One. Some e coli also contain a plasmid which is extrachromosomal DNA
What common biological characteristics exist between Ecoil yeast and strawberries that allows DNA extraction?
E. coli and strawberries both contain cells that have DNA, so the DNA can be extracted.
Why E coli chromosome is circular?
Circular. All bacterial chromosomes are circilar.
When DNA is extracted from E coli cells and analyzed for base composition it is found that 42 percent of the bases are cytosine this means that there is also 42 percent of which base?
thymine
How many cells in 1mg of E. coli cell?
There are 2.547 millions of cells in 1 mg of E coli cells.
How many cells does escherichia coli have?
One. Some e coli also contain a plasmid which is extrachromosomal DNA
What common biological characteristics exist between Ecoil yeast and strawberries that allows DNA extraction?
E. coli and strawberries both contain cells that have DNA, so the DNA can be extracted.
How much more DNA is present in human cells compared to the bacteria E. coli?
A human cell contains approximately 3 billion base pairs and E. coli approximately 4.5 million base pairs.
What are examples of a prokaryote cell?
Prokaryotic cells are characterized by the absence of a separate, membrane-bound nucleus or membrane-bound organelles, and by DNA that is loosely arranged: not organized into chromosomes. Prokaryotic cells are bacterial cells (or cyanobacteria cells). These include; e. coli, staph. aureus, micrococcus luteus.
Does e-coli have a cell membrane?
Yes e-coli does have a cell membrane because all cells have a membrane
Why is E. coli a prokaryotic cell?
Prokaryotes (as their name suggests) refer to cells which do not have a true membrane-bound nucleus. This type of cell includes most bacteria. As E. coli belongs to this category [its genetic material which includes genomic DNA (in the form of single-stranded DNA) and plasmid DNA (small circular DNA molecules in the cytoplasm of the cell) for some strains of E. coli e.g. DH5a] is sequestered in the cytoplasm of the cell in a region known as the nucleoid (rather than a true membrane bound nucleus), we may thus classify E. coli to be a prokaryotic cell.
Why E coli chromosome is circular?
Circular. All bacterial chromosomes are circilar.
How did the Hershey and chase experiment produce evidence the DNA and not protein is the hereditary material in viruses?
They found that all of the viral DNA and little of the protein had entered E. coli cells. Then they concluded that DNA is the hereditary molecule in viruses.
What happen to lac repressor in E. coli when lactose is present?
E. coli binds with lactose which changes its conformation so that it no longer binds to DNA. This allows the lactose operon to be transcribed.
When DNA is extracted from E coli cells and analyzed for base composition it is found that 42 percent of the bases are cytosine this means that there is also 42 percent of which base?
thymine
How did Hersey and chase help build our understanding of genetics?
They used E. coli or Escherichia coli in their experiments
