True or False: For a neuron whose membrane is only permeable to k+, the number of k+ ions that leave the cell to establish a membrane potential equal to the k+ equilibrium potential is small (relative to the total number of of k+ ions inside the cell) and does not measurably change the intracellular k+ concentration.

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.

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

What are the two main phases of a cell cycle