In a twisted ladder model of a dna molecule, the rails represent the
and the rungs represent the of the nucleotides.
oa) sugars and phosphates; nitrogen bases
ob) nitrogen bases; sugars and phosphates
oc) adenine and thymine; guanine and cytosine
od) guanine and cytosine; adenine and thymine
the

The bacteria inside a tube worm would be analogous to what organism in the ocean ecosystem near the waters surface? a. photosynthetic algae b. shrimp c. clown fish d. parasitic lamprey

Give examples of selective advantage of organism’s body part/organ

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.