Which of the following is a biotic factor of an ecosystem?
A) oxygen B) water C) bacteria D) soil minerals
Answer: C
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A drug binds to the active site of an enzyme. If it is bound to the active site of the enzyme, it prevents substrate binding. This drug would be considered a
A. noncompetitive inhibitor. B. allosteric inhibitor. C. allosteric activator. D. competitive inhibitor.
In yeast, expression of the GAL genes is induced when there is ________ in the culture medium
A) glucose B) lactose C) galactose D) maltose E) Any of these
A mother brings a child into the ER with a severe nosebleed that won't stop bleeding. She also tells the doctors that the child bruises very easily in response to very minor accidents
Given the information in the text, the doctor orders some tests and finds that the young boy has ________. A) anemia B) hemophilia C) embolus D) leukemia
One strand of DNA serves as a template for the synthesis of another so that __________.
A. the progeny of each cellular replication gets the same genetic information B. there are two copies of each gene on a single DNA molecule C. DNA can serve as a template for the synthesis of other polymers D. the helical shape of DNA is conserved