Q: What does hair get its color from? Choices: - elasticity pigments - stimulating pigments - fluorescent pigments - melanin pigments A:
melanin pigments

Q: Acting like drawstrings to close off the alimentary canal, what regulates the passage of material between compartments? Choices: - intestine - hamstring - uterus - sphincter A:
sphincter

Q: Q: What are the simplest types of carbon-based compounds? Choices: - particles - Microbes - Cells - hydrocarbons A:
A: hydrocarbons

Question: Q: Chemical digestion in the small intestine cannot occur without the help of the pancreas and what bile-producing organ? Choices: - kidney - heart - stomach - liver A:
Answer: liver

*Question*
Q: Acetone is the simplest type of what organic compound that involves a carbonyl in which the carbon atom makes single bonds with two other carbon atoms? Choices: - enzyme - protein - anion - ketone A:
**Answer**
ketone

*Question*
Q: The alimentary canal is associated with what organ system? Choices: - respiratory - nervous - cardiovascular - digestive A:
**Answer**
digestive