a) A crate containing 40 bricks is raised by a forklift through a height of 1.3m to place on a truck bed. Determine the potential energy gained by the crate if each brick has a mass of 1.3kg. b) The crate is then pulled by a hoist a distance of […]

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 […]