Which three components make up both ATP and ADP?

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

What is the role of dna ligase in the elongation of the lagging strand during dna replication?