at the neuromuscular junction, the binding of acetylcholine to receptors on the muscle cell almost immediately causes .

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

Why has two different alleles for the same trait?

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.