Follow a particle of an indigestible food molecule from entrance to exit of the body
What will be an ideal response?
Food enters the mouth, is carried to the esophagus, to the stomach, where some digestion occurs, and a bit of absorption as well. The primary site of digestion occurs in the small intestine, where enzymes and other compounds from the liver and pancreas empty. But this molecule, being indigestible, passes through the small intestine (duodenum, jejunum and ileum), to the large intestine, through the rectum and out the anus.
You might also like to view...
The difference between pinocytosis and receptor-mediated endocytosis is that _____
A) pinocytosis brings only water molecules into the cell, but receptor-mediated endocytosis brings in other molecules as well. B) pinocytosis increases the surface area of the plasma membrane, whereas receptor-mediated endocytosis decreases the plasma membrane surface area. C) pinocytosis is nonselective in the molecules it brings into the cell, whereas receptor-mediated endocytosis offers more selectivity. D) pinocytosis can concentrate substances from the extracellular fluid, but receptor-mediated endocytosis cannot.
RdRp helps to create:
A. dsDNA from dsRNA B. ssDNA from dsRNA C. dsRNA from ssDNA D. RNA from DNA E. A complementary strand of RNA
Which growth response causes the shoots of a plant grown in the dark to grow upward?
A) phototropism B) thigmotropism C) gravitropism
Which of the major macromolecules—lipids, carbohydrates, proteins, and nucleic acids—contain nitrogen atoms (N)?
A. Lipids and nucleic acids B. Carbohydrates and proteins C. Carbohydrates and lipids D. Nucleic acids and proteins