Schleiden and Schwann determined which of the following statements regarding the cell theory?
A. All cells come from existing cells.
B. All cells are microscopic in size.
C. The cell was discovered by Anton van Leeuwenhoek.
D. The cell is the basic unit of life in all living things.

Step 1 review the imaginary strand of dna below. note the complementary base pairs. a g c a a t c c g t c t t g g t c g t t a g g c a g a a c c step 2 to begin replicating this strand of dna, draw the two sides of the strand separating. step 3 now, draw the free-floating bases linking up with the separate sides. remember to follow the rules of complementary base pairing. step 4 draw the two resulting dna strands.