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

Problem:OPTIONS:
- particles
- Microbes
- Cells
- hydrocarbons

Q: What are the simplest types of carbon-based compounds? A:
****
A: hydrocarbons

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

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? A:
OPTIONS:
- enzyme
- protein
- anion
- ketone

Answer: ketone

Question: Q: Some terrestrial species breathe through their skin and oral cavity because they lack what? A:
OPTIONS:
- windpipe
- nose
- mouth
- lungs
Answer: lungs

input: OPTIONS:
- mucus glands
- pineal glands
- adrenal glands
- apocrine glands Now, answer this question: Q: The sweat glands of the armpit are classified as these? A:
A:
output:
apocrine glands