What channels are open at the same time during cardiac muscle action potential? Group of answer choicesK+ & Na+ Ca2+ & K+ Acetylcholine & K+ A & C

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.