Which of the following recombinant DNA technology products is mismatched?
A. Tissue plasminogen activating factor - stimulates blood clotting
B. Erythropoietin - stimulates erythrocyte production in bone marrow
C. Interferons - stimulate antiviral protein production
D. Factor VIII - a protein necessary for the coagulation cascade
Answer: A
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Cystic fibrosis (CF) is an autosomal recessive disorder caused by faulty chloride ion channels in cells lining of the lungs and the pancreas. A man and woman, with no CF symptoms, have an unaffected boy and a daughter with CF. The gene responsible for CF is located on:
a. The X-chromosome b. The Y-chromosome c. One of the human chromosomes 1=12
The Carboniferous Period is known for
A. The formation of rich coal deposits. B. The first examples of terrestrial gymnosperms. C. The appearance of the first angiosperms. D. A rapid increase in the diversity of marine invertebrates. E. The appearance of the first true mammals.
Gingko trees are known to lose their leaves at a certain time each year throughout the United States. Based on this information, Gingko trees in China must behave the same way. These statements are an example of:
A. inductive reasoning B. deductive reasoning C. a theory D. an experiment
In antibody-mediated immunity, where does the antigen first bind?
A. helper T cell B. memory cell C. BCR D. plasma cell E. TCR