While we are awake, _ builds up in the basal forebrain and preoptic area of the hypothalamus, slowing brain activity and making us feel drowsy. Some people use caffeine to reduce this effect. A) adipose B) adenosine C) ethanol D) orexin

A neurotransmitter that is the most widespread inhibitory neurotransmitter in the brain is _________.   A) Group of answer choices B) Glutamate C) Serotonin D) Neuropeptide Y E) GABA F) Dopamine

Which is NOT a question that science can answer: (a) Does taking ginkgo reduce the chance of Alzheimer's disease? (b) Is marijuana better than other medications at reducing symptoms of post traumatic stress syndrome? (c) Is it ethical to raise animals for organs for people? (d) How can we reduce health effects of climate change in Chicago?

Which of these flavors do not have specific receptors? a) sour b) salt c) sweet d) umami e) spicy