Match the following. 1. protons negative charge 2. neutrons no charge 3. electrons positive charge

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

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth

What substance acts to prevent sudden ph changes in bodily fluids?