Question

hat is the function of vitamin A in our body ? Name two
ul3 In our food.
. Why are vitamins necessary in our food ? What is
items in which vitamin A is found.
State the functions of water in our body. How do we
What is roughage? What is the finction of
9. How do we get most of the water needed by our body?
action of r hagoinh du 2 Name two sources of roughase​

Answer 1

Explanation:

The three-dimensional structure of a double-stranded DNA molecule may be described by distinguishing the helical turns of the DNA duplex from any superhelical turns that might be superimposed upon the duplex turns. ... These results are interpreted as showing that human DNA is supercoiled.