Question

One such myth in the peoples mind is that they are not overweight. But due to their dense bones, they seem heavy. Again, there is no such thing as heavy bones. The weight is due to the excess fat set up on the body.

Answer 1

E. Coli cells are more likely to incorporate foreign dna if their cell walls are altered so that dna can pass through more easily. Such cells are said to be "competent." cells are made competent by a process that uses calcium chloride and heat shock. Cells that are undergoing very rapid growth are made competent more easily than cells in other stages of growth.