(Q).
Answer the following question given this paragraph: Q: Acting like drawstrings to close off the alimentary canal, what regulates the passage of material between compartments? Choices: - intestine - hamstring - uterus - sphincter A:
(A).
sphincter

(Q).
Answer the following question given this paragraph: All chemical reactions require activation energy, which is the energy needed to get a reaction started. Q: What type of energy is required in all chemical reactions? Choices: - conduction - function - solar - activation A:
(A).
activation

(Q).
Answer the following question given this paragraph: Plant cells have structures that animal cells lack. What important process takes place in plant cells but not in animal cells that might explain their differences?. Q: Plant cells have structures that animal cells? Choices: - have - drink - eat - lack A:
(A).
lack