The large intestine concentrates undigested material by
A. squeezing excess salts and water from the undigested material via contraction of muscles in the intestine wall.
B. absorption of salts and water across the epithelial surface of the lumen.
C. ingestion of excess salts and water by intestinal bacteria.
D. storing excess salts and water in the cecum.
E. transporting excess salts and water back to the small intestine for absorption.
B. absorption of salts and water across the epithelial surface of the lumen.
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Indicate whether the statement is true or false.
During normal DNA replication, part of the sequence at the ends of linear chromosomes is not copied into the new
DNA strands because ____.
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The walls of the descending limb of the loop of Henle are relatively permeable to sodium. Indicate whether the statement is true or false