The two most important alcohol germicides are ________ and ________.
A. methanol; isopropanol
B. ethanol; isopropanol
C. methanol; butanol
D. ethanol; methanol
Answer: B
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If the sequence of one strand of a DNA molecule is 5' ATGGCAT 3', the sequence of the complementary strand is:
A) 5' ATGGCAT 3' B) 3' ATGGCAT 5' C) 5' TACCGTA 3' D) 3' TACCGTA 5'
The chorion and __________ become part of the
placenta, the organ that allows exchange of substances between maternal and fetal bloodstreams. Fill in the blank(s) with the appropriate word(s).
A cell must expend energy to produce a concentration gradient
__________________ Indicate whether the statement is true or false.
Which one of the following is TRUE regarding the lymphatic system?
A) The lymphatic system removes microorganisms from body fluid. B) Lymph flows from lymph capillaries to larger lymphatic vessels to the heart and lungs. C) Lymphatic capillaries absorb lipid droplets from plasma. D) Lymph is excreted from the body. E) Lymphatic capillaries produce interstitial fluid.