What organelle inactivates toxins?
a. nucleus
b. mitochondria
c. peroxisomes
d. lysosomes
e. Golgi body
ANSWER: c
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Net productivity can be measured as
A. numbers of herbivores. B. biomass of detritivores. C. energy stored in biomass. D. sunlight striking an area of the planet. E. None of these choices are correct.
PCR is particularly useful in
A. detecting viable yet non-culturable organisms. B. assessing impure (multiple types of bacteria present) samples. C. dealing with very small numbers of bacteria. D. relatively quickly producing results. E. All of the choices are correct.
Can Southern and northern blotting detect differences between WT and mutant ?-globin gene or between WT and mRNA or both?
A) Only differences between WT and the gene can be detected. B) Only differences between WT and the mRNA can be detected. C) Differences between the WT and both the gene and the mRNA can be detected. D) Neither differences between WT and the gene nor between WT and the mRNA can be detected.
The endosymbiont theory is supported by all of the following evidence except for which statement?
A. Mitochondria are surrounded by two membranes. B. Mitochondria have a matrix. C. Mitochondria divide by binary fission. D. Mitochondria contain circular molecules of DNA. E. Mitochondrial ribosomes are similar to bacterial ribosomes.