How many different type of amino acids are found in proteins?
A. 100
B. 200
C. 1,000
D. 20
E . 4
Ans: D. 20
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All but which of the following can occur in the blood?
a. digestion of nutrients b. combining of oxygen with hemoglobin c. transport of phagocytic cells d. stabilization of pH e. equalization of internal temperatures
When considering transfusions or transplants, it is more difficult to match blood than to match tissue types because blood cells have more self markers on their surface
Indicate whether the statement is true or false
Blood vessels are found in the
A. stratum corneum B. dermis C. stratum basale D. subcutaneous layer E. dermis and subcutaneous layer
Archaeans like Sulfolobus have multiple origins of replication. This suggests that they ____
a. are more like bacteria than eukaryotes b. are more like eukaryotes than bacteria c. have a unique form of chromosomal replication d. have multiple plasmids, whose replication must be coordinated e. have multiple chromosomes