Q: Q: Hydrogen chloride contains one atom of hydrogen and one atom of what? Choices: - magnesium - calcium - nitrogen - chlorine A:
A: chlorine

Q: Q: The brain develops from this early tube structure and gives rise to specific regions of the adult brain. as the neural tube grows and differentiates, it enlarges into three vesicles that correspond to the forebrain, midbrain, and this? Choices: - anteriorbrain - rearbrain - astrobrain - hindbrain A:
A: hindbrain

Q: Q: What three primary colors of light can be distinguished by the human eye? Choices: - blue, red, orange - yellow, green, blue - red, green, yellow - red, green, blue A:
A: red, green, blue

Q: Q: How does a cell's membrane keep extracellular materials from mixing with it's internal components? Choices: - absorbs extracellular materials - repels extracellular materials - destroys extracellular materials - provides a barrier A:
A: provides a barrier