A researcher studying the impact of agricultural pesticides on native plants discovers a bacterium capable of degrading small amounts of a specific pesticide. The researcher then modifies the bacterial species in the lab to increase the rate of pesticide degradation. This research represents
A. applied microbiology.
B. environmental microbiology.
C. food microbiology.
D. both food microbiology and environmental microbiology.
E. both applied microbiology and environmental microbiology.
Answer: E
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Which of the following statements is false?
A. The walls of the right ventricle are thicker than the walls of the left ventricle. B. Blood pressure in the pulmonary circulation is lower than blood pressure in the systemic circulation. C. The left ventricle pumps oxygenated blood, whereas the right ventricle pumps deoxygenated blood. D. The systemic blood pressure of a bird is much higher than that of a fish. E. None of the answer options is false.
Using Northern and Southern blot techniques, you study a gene, CAE1, that seems to be associated with lung cancer. Your probe in both blots is a 32P-labeled single strand DNA that can base pair with the CAE1 RNA and with the CAE1 gene
You isolate DNA and RNA from brain, heart, lung, and cancerous lung tissue. The DNAwas cut into DNA fragments with a restriction endonuclease before electrophoresis. The results of the blots are shown here. Which one of the following is an observation or conclusion consistent with the data? A. There are fewer CAE1 genes in brain tissue compared to heart tissue. B. The DNA sequence of the CAE1 gene in lung cancer cells is different than in other tissues. C. The amount of CAE1 RNA in lung cancer cells is higher than in other tissues. D. The amounts of all RNAs in heart cells and normal lung cells are the same. E. Deleting the CAE1 gene in all tissue types would be a possible cancer cure with little or no side effects.
The phenotypic ratio expected from a dihybrid cross involving complete dominance is
A) 121. B) 931. C) 9331. D) 41.
A protist lives in the gut of a termite, breaking down the cellulose that the termite ingests and providing glucose to benefit both of them. This kind of relationship is called ________
Fill in the blank(s) with correct word