The two strands of a dna molecule are said to be antiparallel. what does this mean?

a. they are oriented in opposite directions.
b. they vary in their distance from each other.
c. they are oriented perpendicular to each other.
d. the bases face each other rather than the backbones.

In the desert, saguaro cacti, owls, horned lizards, and fire ants all share the same space. which of the following can be considered a population? question 9 options: all plants in the same area all cacti in the same area all species in the same area the lizards and the ants

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.

When ash and dust begin to settle on the ground, they eventually become compacted by