Based on the location of the flagellum, what function do you think it serves?
a. it plays a role in the exocytosis process.
b. locomotion.
c. it is a receptor site for proteins.
d. none of the above.
b
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The transcribed, but not translated, sequence that is immediately upstream of the region that encodes the functional product is called the ________ region.
A. trailer B. coding C. leader D. promoter
One important difference between amniocentesis and chorionic villus sampling is that ____
a. chorionic villus sampling is more routine b. amniocentesis can diagnose chromosome disorders, while chorionic villus sampling cannot c. chorionic villus sampling can be done earlier in the pregnancy than amniocentesis d. maternal risks are higher with chorionic villus sampling e. the risk of miscarriage is higher with amniocentesis than with chorionic villus sampling
Unlike bacteria, most archaeons have linear chromosomes with multiple origins of replication.
Answer the following statement true (T) or false (F)
Suppose that a scientific idea is well-tested and can be used to make predictions in numerous new situations, but cannot explain one particular event. This idea is a
A) theory that may need revision. B) hypothesis that must be retested. C) hypothesis that is incorrect. D) theory that should be discarded.