Table of Contents
Is DNA free floating in the cell?
Free-floating DNA is a term used to describe Prokaryotic DNA because such cells do not contain a distinct nucleus complete with a nuclear membrane. Such DNA simply exist in a region in the cytoplasm called nucleoid. Nucleoid is not distinct but can be found in any part of the cytoplasm, thus the term ‘free-floating’.
What does it mean to have free floating DNA?
how is the DNA described and what does this mean? free floating DNA means it is freely floating. all thw internal structures are floating in what substance. cytoplasm.
What keeps DNA in place in the cell?
DNA is wrapped around proteins called histones, which allows the DNA to become compacted into a material known as chromatin. Without the packaging of DNA into chromatin, the DNA wouldn’t fit within the nucleus. Chromatin is what makes up the material of chromosomes.
Where is DNA that floats freely in the cell?
In bacteria, DNA floats freely throughout the cytoplasm (it’s body). This provides for quick and numerous reproduction Where is the DNA located in a prokaryotic cell? The DNA is located in cytoplasm of the prokaryotic cell. It flows freely in the cytoplasm. How is the DNA prokaryote different from the DNA in eukaryotes?
Why is DNA soluble in water but not in Salt?
DNA is soluble in water, but not in salty water. All the other cell contents are soluble in water and salt water. This difference in solubility allows students to separate DNA from the rest of the cell. Students add salt to the mixture to force the DNA out of the solution of water, strawberries, and soap.
How does adding detergent to a cell release DNA?
Adding detergent or soap breaks the nuclear and cell membranes, releasing the DNA. Plant cells, but not animal cells, also have a rigid cell wall around the outside of the cell. The students must smash the strawberry in the bag to break the cell walls and expose the membranes inside to the soap or detergent.
How is DNA taken out of a cell?
The DNA needs to be taken out of the cells. We need to get a source of DNA (i.e., something living), break down its cell walls and membranes, and then separate the DNA out from everything else in the cell. Students do this in this experiment.