Why are common cold viruses difficult to cure? A copy of the DNA is made from the viral RNA.

The virus leads to other viral infections such as the flu and HIV.

Vaccines prevent the development of a cure.

The viral genome mutates very quickly.

Give the biological term for: structures that display characteristics of living organisms only within living cells

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.