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Slash-and-burn agriculture has been practiced for millennia in tropical countries throughout the world. In this form of agriculture, some timber may be harvested from tropical forests prior to their conversion to agricultural use, but most of the aboveground biomass is cut and burned on site. Agricultural crops are planted immediately following burning. Recently, there has been increased pressure to harvest all timber (for transport off site) from tropical forests prior to their conversion to agriculture. What are the implications of such complete harvest for the success of subsequent agricultural activities on oligotrophic soils in the tropics?
A semipermeable membrane separates two aqueous solutions at thirty degrees C. For each of the following cases, name the solution into which a net flow of water.
The cell walls if bacteria, fungi and plant cells and an extracellular matrix of animal cells are all external to the plasma membrane. Which is the characteristic of all these extracellular structures.
If you were given a sample of chromosomal DNA and asked to determine if it is bacterial or eukaryotic, what experiment would you perform, and what would be your expected results?
MN blood types were assessed for a population that consists of 100 individuals: 45 have blood type M, 30 have blood type MN and 25 have blood type N. Is the population in Hardy-Weinberg Equilibrium with regards to this locus? Show your calculation..
Will victim die, or would the scientist have to go back to the laboratory to invent a more effective death-ray. The DNA is consequently isolated and centrifuged in a CsCl2 gradient to yield what type of gradient band(s).
Assuming that all other variables remain constant, explain why light of shorter wavelength will produce a clearer image than light of longer wavelengths.
Starting with IMP draw the pathways for the synthesis of ATP and GTP. You must include the structure, name of metabolite, name of enzymes, etc.
Discuss all the steps, in order that the electrons from NADH typical pass through before getting oxidized into water. In which part of the citric acid cycle does substrate level phosphorylation occur?
The final elution of your miniprep plasmid DNA has a concentration of 250 ng/uL. You need to load 500 ng on an agarose gel to be able to see the DNA.
let A and a represent dominant and recessive alleles whos respective frequencies are p and q in a given interbreeding population at equilibrium (with p+q=1). A) if 16 percent of the individuals in the population have recessive phenotypes.
What is the most possible explanation for how these proteins find their way to the mitochondria. What is the good range for a heartbeat stroke work in an anaesthetised sheep? Before and after the venous administration of adrenaline.
Compare the recipes of nutrient agar and HE agar. If an organism can grow on both media, on which would you expect it to grow better? Why?
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