Which statement best describes why mechanical digestion, the process of breaking down large chunks of food into smaller pieces, is an important digestive process?
A) Because smaller pieces of food do not pass through the small intestine whereas larger pieces of food do B) Because smaller pieces of food have more surface area for chemical digestion than do larger pieces of food C) Because smaller pieces of food are easier to excrete than are larger pieces of food D) Because smaller pieces of food are more easily stored in the stomach than are larger pieces of food
It is important for pregnant women to consume folic acid supplements because ________.
A) the fetus is not able to acquire oxygen by breathing on its own B) the fetus stores folic acid in high quantities C) folic acid deprivation is associated with neural tube defects in a fetus D) folic acid deprivation is a cause of heart abnormalities in a newborn
Which of the following is an advantage of a complete digestive system?
A) It excludes the need for extracellular digestion. B) It allows for specialized regions with specialized functions. C) It allows extensive branching. D) It facilitates intracellular digestion.