Which example is always single stranded?

DNA

DNA and RNA

dsRNA

mRNA

This organism is not capable of performing photosynthesis. (horseshoe crab) true false

4. if a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. water will move out of the cell, causing it to shrivel. b. water will move in and out of the cell at the same rate. c. water will move out of the cell, causing it to swell. d. water will move into the cell, causing it to swell.

How are fossils used to date organisms?