____is released by fat cells to signal that the body has had enough to eat, and also influences basal metabolic rate (BMR)

Data on school achievement indicates that, on average, African American and Hispanic students tend to

a) receive high grades until high school. b) perform at lower levels and receive lower grades. c) receive higher grades despite performing at lower levels. d) perform at higher levels and receive higher grades.

A lesion technique that is selective for cell bodies in brain tissue involves

A) aspiration of tissue using a pipette. B) overstimulation of glutamate receptors by kainic acid. C) the flow of alternating current at the tip of an electrode. D) the flow of electrical current through an electrode. E) infusion of hypertonic saline through a cannula.