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1. A highly concentrated solution of salt water is known as sole (pronounced, soh-lay). It is prepared by dissolving large amounts of salt in water until the water is saturated with salt. Explain in detail the properties of water that make it such a good solvent for the salt to […]

Bacterial cells have only one DNA molecule, which is double stranded and is replicated in essentially the same fashion as in eukaryotes. Imagine that, following the techniques of other scientists studying DNA, you created a bacterial cell that contains only radioactive nitrogen in its DNA. You then place the cell […]

Question: Suppose that you have come up with a way of enlarging single cells to such a degree that a DNA duplex has a diameter of 0.1 mm – about the thickness of a human hair. If you were to do that, how long a “hair” would the entire human genome […]

1- How is the DNA of prokaryotes organized? In chromosomes? If so, how many, what shape? 2- what are the characteristic shapes of individual bacteria cells? Give Latin and English terms. 3- why do Gram-positive bacteria retain the violet dye? 4- what is the difference between a chemolithotroph and a […]