Ritchie was investigating different types of cells. He read how long dendrites of this cells enable it to send and receive messages quickly. A. a red blood cell

B. A muscle cell

C. A nerve cell

D. A heart cell

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.

The hematodinium parasite becomes less of a problem for the blue crab when the crab is very young. fishing is thriving in the region. the crab moves to less salty water. a significant percentage of the population is impacted.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes