Microvilli are present to increase the area available for absorpation in the
A. small intestine
B. large intestine
C. stomach
D. gallbladder
Answer: A. small intestine
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Why is there a need to produce Okazaki fragments on the lagging strand, but not on the leading strand of DNA?
A. The two parental strands of DNA are antiparallel and DNA polymerase makes DNA in the 5? to 3? direction only. B. It is substantially more efficient to make several shorter strands rather than one longer strand of DNA. C. There lacks enough cellular DNA ligase for bonding Okazaki fragments together if they were produced from both parental strands. D. By having one leading strand and one lagging strand the cell can limit the amount of DNA polymerase used for chromosomal replication. E. It is faster to make several smaller fragments than one larger fragment.
The role of a tumor suppressor protein in a cell is to ____
a. promote cell division of healthy cells b. inhibit cell growth and division c. promote cell division of abnormal cells d. trigger DNA replication in preparation for cell division e. serve as a cell receptor for growth factors
Anterior pituitary hormones have effects in all of the following EXCEPT
a. ovaries and testes. b. mammary glands. c. thyroid glands. d. bone and muscle. e. kidneys.
The opisthokonts include all of the following organisms EXCEPT
A. plants. B. fungi. C. choanoflagellates. D. animals.