Fermentation can occur in the absence of living cells.
Answer the following statement true (T) or false (F)
True
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In which of the following environments would you expect to find a high number of iron-reducing bacteria?
A) acidic mine drainage B) deep subsurface C) open ocean D) agriculture soil
In order to prove genetic recombination occurred through material (DNA) exchange between homologous maize (corn) chromosomes, Harriet Creighton and Barbara McClintock:
A. stained individual chromosomes to see banding, and then observed segregation of bands. B. observed specific morphologic features of one chromosome being "traded" with its homolog. C. created mutations of chromosomes via irradiation and observed transfer of damaged DNA between homologs. D. labeled one chromosome with 32P and observed the transfer of radioactivity to the homolog.
Ecdysone, a steroid hormone, controls ____
a. the menstrual cycle b. molting in arthropods c. the wake-sleep cycle d. the formation of hormone receptors e. the formation of sperm
Examined cancer cells from the lungs of smokers demonstrate which of the following?
A) mutation rates that are similar to those in a smoker's heart B) normal mutation rates compared to non-smokers C) unregulated methylation patterns D) the occurrence of tumor-suppressor mutations is less in the lung than the throat