Direct injection of CART into to ______ is rewarding for rats, suggesting that this peptide is involved in the rewarding aspects of ________.
A) ventral tegmental area; alcohol
B) raphe nucleus; amphetamine
C) substantia nigra; alcohol
D) ventral tegmental area; cocaine
Answer: D) ventral tegmental area; cocaine
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Where are complement proteins synthesized, and what do they do?
a. in the bone marrow, generate new platelets and T-cells b. in the kidneys and plasma, destroy intracellular pathogens c. in macrophages and the liver, destroy extracellular pathogens d. in the spleen and duodenum, generate macrocytes
Red imported fire ants (RIFAs) disrupt natural communities by ____
a. congregating inside electrical equipment b. competing with native ant populations c. stinging humans with deadly venom d. disrupting pasture land e. killing Texas horned lizards
Four of the following are echinoderms. Which one is the exception?
a. sea cucumber b. sea star
c. urchin d. brittle star e. krill
Eukaryotic cells contain membrane bound
___________ in their cytoplasm. Fill in the blank(s) with the appropriate word(s).