A study shows that people who eat fish three times a week live longer. Based on this study, which of the following can you not conclude?
A) There is a correlation between eating fish in the diet and the length of life.
B) Eating fish causes longer life.
C) Fish is a healthy choice of food.
D) All of the above can be concluded based on this study.
Answer: B
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What can proteomics reveal that genomics cannot?
A) the number of genes characteristic of a species B) the patterns of alternative splicing C) the set of proteins present within a cell or tissue type D) the levels of mRNAs present in a particular cell type E) the movement of transposable elements within the genome
Concerning growth in genome size over evolutionary time, which of these is LEAST associated with the others?
A) orthologous genes B) gene duplications C) paralogous genes D) gene families
Nitrogen fixation is a process that _____
A) recycles nitrogen compounds from dead and decaying materials B) converts ammonia to ammonium C) releases nitrate from the rock substrate D) converts nitrogen gas into ammonia
Wild type bread mold can grow in a minimal medium without supplements, while certain mutated strains can only grow in a minimal medium that is supplemented with specific intermediates found in the following metabolic pathway for arginine synthesis. See the figure below for an overview of the arginine biosynthetic pathway.A strain that can grow in minimal medium containing ornithine, citrulline, or arginine, but not in minimal medium alone would have a mutation in the gene that encodes for
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A. enzyme 1. B. enzyme 2. C. enzymes 1, 2, and 3. D. The strain would be the wild type with no genetic mutations. E. enzyme 3.