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Q. Most biologists believe that immune system's defense against infections largely rests on its ability to distinguish self molecules from nonself molecules. This concept seems central to our understanding of immune function. However, like all scientific ideas, it is not beyond question. Some immunologists have developed an alternative hypothesis: that the immune system's effectiveness rests mostly on its ability to recognize damage to the body tissues caused by the invaders, not on the ability to recognize nonself. If you were going to test the "damage" hypothesis what might you look for? Which sort of cell would you expect to be directly affected by damaged tissues? Why? Some proponents argue that the "damage" hypothesis makes more sense from an evolutionary perspective, claiming that it is more advantageous for an organism's defense system to respond to tissue damage than to the mere presence of a foreign microbe. Do you be in agreement? Why or why not?
How can the photosynthesis process be enhanced to fix more CO2 than normal and plant productivity could be increased.
Artificial electron acceptors can be used to detect a exact organelle by cytochemistry. Name this organelle and outline the procedure that you would use to detect this organelle by cytochemistry.
What will be appearance of the offspring of a cross of the F1 peaches back to that smooth,oval glanded parent. How several diploid Drosophila cells would be needed to have 1 picomole of each allele.
List and explain at least three cellular features of bacteria that might be targeted to inhibit or kill a bacterial pathogen.
What do you think is the most probable mechanism of browning? If a patient's resting cardiac output is 5.6 l/min and on a stress test she elevated her heart rate to the highest of 176 beats/min with a stroke volume of 115 ml/beat, what is her cardiac..
ATP synthesis by chemiosmosis (electron transport pumping protons across inner membrane) both photosynthesis and respiration take place in double-membrane organelles with own DNA Q: Which is NOT a difference between C3 and C4 plants.
Animals always want to get the most from their resources by increasing the surface area throughout their organ systems. Please cite five examples and how it does this.
The tRNA in the E site will leave and migrate to its aminoacyl-tRNA synthetase d. where the tRNA will be recharged with the correct amino acid.
Recognizes true statements of cholesterol and its fluidity. Cholesterol increases membrane fluidity that otherwise contains mainly long chain saturated fatty acids.
Calculate the steady state concentration of radon in the huse assume the ambient concentration is negligible. What is the genus of these bacteria.
A scientist has discovered a new cell. illustrate, in detail, ALL the ways the scientist could decide if the cell comes from a plant or an animal. How several of these result in the release of oxygen into the atmosphere?
Throughout pairing homologous regions associate with one another. As a result individual heterozygous for an inversion will form a structure known as an inversion loop. What is consequence of a crossover within this inverted region.
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