The amniotes include (select all that apply)
A. sharks
B. amphibians
C. reptiles
D. birds
E. mammals
C,D,E
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Digestion and absorption allow vertebrates to use nutrients to
A. make ATP. B. repair tissue damage. C. deliver oxygen to cells. D. form bone. E. perform all of the functions given.
T cells can only be activated by ____
a. antigens presented by other cells b. apoptosis c. memory cells d. plasma cells e. complement proteins
In an ecosystem’s bottom-up processes, predators affect the abundances of other populations in the ecological
community. ____________________ Indicate whether the statement is true or false.
Communication among neurons and between neurons and other target cells occurs across short distances at a structure called the __________, a region where the signaling cell and the target cell are very close together.
a. catecholamine b. neurotransmitter c. synapse d. epinepherine