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Q. A. An ecologist studying desert plants performed the following experiment. She staked out two identical plots that included a few sagebrush plants and numerous small annual wildflowers. She found the same five wildflower species in similar numbers in both plots. The she enclosed one of the plots with a fence to maintain kangaroo rats, the most common herbivores in the area. After two years, four species of wildflowers were no longer present in the fenced plot, but one wildflower species had increased dramatically. The unfenced control plot had not changed significantly in species composition. By means of the concepts discussed in the chapter, what do you think happened?
B. supposes that you have been chosen as the biologist for the design team implementing a self-contained space station to be assembled in orbit. It will be stocked with organisms you choose, creating an ecosystem that will support you and five other people for two years. Explain the main functions that you expect organisms to perform. List the types of organisms you would select, and explain why you chose them.
Why could prokaryotes quickly reinfect a patient if they are not wiped out? How may this result in the evolution of drug-resistant pathogens.
What occur on BTB solution if you combine into germinating radish seed? And what happen if BTB solution combines into yeast glucose solution.
If the fox were to feed only on insect-eating birds, how many square meters of plant material would be necessary.
At the end of the measurement period, which group will have produced the greatest volume of urine and which group the minimum? Describe your answer in details.
It is a very curcial concept to understand how the immune response is mounted against viruses, bacteria, protozoans and helminthes. For an effective immune response, both innate and adaptive immunity should work together.
If two organisms each with the genotypes TtGg mate what is the probability that they will produce a child with the dominant phenotype for height and recessive phenotype for colour.
List and express at least three prokaryotic cellular features that might be targeted in this way to inhibit or kill a bacterial pathogen.
Explain why there are no male offspring with the allele combinations
Explain why bacteria do not have apoptotic signaling pathways.
What organism produces the disease and how. Why is Anthrax such a potent weapon of bioterrorism? What are its characteristics that make it so.
Write a case study which detailing a scenario of a patient being investigated in the Haematology laboratory.
The following Punnett square shows the inheritance of the sickle cell and SRY genes, with X representing the X chromosome with no SRY gene and Y representative the Y chromosome which does have an SRY gene. Complete the Punnett square.
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