A chromosome consists of
A) mostly protein and RNA with a small amount of DNA.
B) mostly DNA and proteins with a small amount of RNA.
C) about equal proportions of DNA, RNA, and protein.
D) DNA only.
B) mostly DNA and proteins with a small amount of RNA.
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Why is the formation of a BCR-ABL fusion gene a carcinogenic event?
A. The tyrosine kinase activity of the ABL gene becomes inactive. B. The tyrosine kinase activity of the ABL gene is now controlled by a weak promoter resulting in less tyrosine kinase activity. C. The tyrosine kinase activity of the ABL gene becomes unregulated leading to uncontrollable cell division. D. The tyrosine kinase activity of the ABL gene is reduced due to truncation of the protein product. E. The tyrosine kinase activity of the BCR gene is increased in the fusion protein product.
Metabolic fingerprinting could be used ____
a. to determine the structure of a metabolite b. to compare the metabolic differences between healthy and disease cells c. to decipher the mRNA sequence of a metabolic enzyme d. to identify the sequence of a metabolic gene e. for paternity testing
The data in the graph best support which of the following claims?
(A) Environmental contamination elevates total testosterone oxido-reductase activity in females. (B) Environmental contamination reduces total testosterone oxido-reductase activity in females. (C) Environmental contamination elevates total testosterone oxido-reductase activity in males. (D) Environmental contamination reduces total testosterone oxido-reductase activity in males.
Microorganisms play an active role in the formation of industrial products. Which of the following is mismatched?
A) Penicillium — treatment of disease B) Saccharomyces cerevisiae — for fermentation C) Rhizobium — increases nitrogen in the soil D) Bacillus thuringiensis — insecticide E) algae — citric acid