(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: Organic chemistry is the study of chemicals containing carbon. Carbon is one of the most abundant elements on Earth and is capable of forming a tremendously vast number of chemicals (over twenty million so far). Most of the chemicals found in all living organisms are based on carbon. Q: What type of chemistry is the study of chemicals containing carbon called? Choices: - inorganic chemistry - biochemistry - bioanalytical chemistry - organic chemistry A:
(A).
organic chemistry

(Q).
Answer the following question given this paragraph: Of all electromagnetic waves, gamma rays have the shortest wavelengths and highest frequencies. Because of their very high frequencies, gamma rays have more energy than any other electromagnetic waves. Q: Which of the electromagnetic waves have the shortest wavelengths and highest frequencies? Choices: - ultraviolet - beta - plasma - gamma A:
(A).
gamma