As blood enters a nephron it flows through a network of capillaries known as

6. in the dna double helix, how are the two strands of dna held together? a. chemical bonds between base pairs hold the two strands of dna together. b. hydrogen bonds between the base pairs hold the two strands of dna together. c. hydrogen bonds between sugar groups and phosphate groups hold the two strands of dna together. d. chemical bonds between sugar groups and phosphate groups hold the two strands of dna together.

Why do bacteria thrive even in hostile environments

The production of cells during mitosis into specialized function is recombination or differentiation