Which term describes all organisms that have a backbone, paired appendages, and bilateral symmetry? A. axial

B. vertebrate

C. appendicular

D. mammalian

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 happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.

In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids