Most of the brain's excitatory ionotropic synapses use the neurotransmitter . a. atp b. substance p c. glutamate d. nitric oxide

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells