Stamens, sepals, petals, carpels, and pinecone scales are all _____
A) female reproductive parts
B) capable of photosynthesis
C) modified leaves
D) found on flowers
C
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What would be the result of a mutation in Hsp90?
A. Glucocorticoid receptor could not form a dimer B. The nuclear localization signal would no longer function C. Expression of the regulated genes would become constitutive D. The hormone would not be able to bind to the glucocorticoid receptor
The lowest temperature needed to kill or inactivate all microbes in 10 minutes is the
A. thermal death time (TDT). B. death phase point. C. thermal death point (TDP). D. sporicidal time.
Please list the sequential levels of protein structure:
What will be an ideal response?
Researchers applied radioactive phosphorus and radioactive calcium to a freshly cut tree stump. Eight days later, they came back to measure the distribution of the radioisotopes. They found that nineteen different species of shrubs and trees within a seven-meter radius had taken up the radioactive elements. No radioactivity was detected in the air. Radioactive isotopes were never detected in any samples containing just soil taken during the experiment. The finding implies that the
a. soil does not provide the ecosystem with minerals b. isotopes were undetectable in very small amounts c. isotopes were transported via vascular tissues d. plants quickly return minerals to the soil in which they grow e. soil speeds up radioactive decay