Q: What begins when a neuron receives a chemical stimulus? Choices: - a induce impulse - a metabolism impulse - nerve reaction - a nerve impulse A:
a nerve impulse

Q: Endocytosis and exocytosis are types of vesicle transport that carry very large molecules across what structure? Choices: - cell substrate - the heart - dermis - cell membrane A:
cell membrane

Q: What behavior includes all the ways that animals interact with each other and the environment? Choices: - adaptation - interdependence - instinct - animal behavior A:
animal behavior

Q: In boys, what hormone stimulates the growth of the larynx and thickening and lengthening of the vocal folds, which causes the voice to drop in pitch during puberty? Choices: - Sexual - Endocrine - Petuitary - testosterone A:
testosterone