Fat absorption differs from protein and carbohydrate absorption because
A. fats enter lacteals rather than capillaries.
B. fats are not broken down before they are absorbed.
C. there are no enzymes involved in the breakdown of fats, so they are absorbed as fat molecules.
D. glycerol cannot be absorbed by villi.
A. fats enter lacteals rather than capillaries.
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DNA associates very tightly with nucleosomes because
A. DNA can form covalent bonds with histone proteins. B. negative charges on DNA are attracted to positive charges of the histone proteins. C. the histone tails wrap tightly around the DNA double helix. D. the amino acids of histone proteins are largely acidic, while DNA molecules are basic. E. histone H1 tightens the coils of DNA that are wrapped around the nucleosome.
T cells undergo maturation in the bone marrow.
Answer the following statement true (T) or false (F)
Which of the following would you expect to find in the tonsilar crypts?
A. Streptococcus B. Staphylococcus C. Neisseria D. Micrococcus
The first known member of the genus, Homo,
a. H. erectus. b. H. sapiens. c. H. neanderthalensis. d. H. habilis. e. H. floresiensis