Briefly explain the process by which the components of a peanut butter and jelly sandwich would be
absorbed once they have been broken down. What will be an ideal response?
The amino acids resulting from the digestion of proteins as well as the monosaccharides resulting from
the digestion of polysaccharides and disaccharides are absorbed via active transport through the
epithelial cells of the villi into the adjacent capillaries. The fatty acids and monoacylglycerols resulting
from the digestion of triglycerides are absorbed into the epithelial cells in the intestinal lining,
reassembled as triglycerides, packaged with cholesterol and phospholipids forming chylomicrons, and
then enter a lacteal of the villus.
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Nitrogen is available to plants mostly in the form of _____
A) nitrogen in the atmosphere B) nitrite ions in the soil C) uric acid from animal excretions D) nucleic acids from decomposing plants and animals E) nitrate and ammonium ions in the soil
The structure that easily distinguishes a plant cell from an animal cell is
A. chloroplasts. B. the nucleus. C. the plasma membrane D. the Golgi apparatus. E. mitochondria.
The use of rRNA gene sequences to identify bacterial strains is referred to as ________.
Fill in the blank(s) with the appropriate word(s).
A state of extreme sluggishness is known as ____
a. torpor b. endothermic c. migration d. extinction e. reproduction