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The maintenance of homeostasis is of major importance to all organ systems in the body and the overall survival of the individual. Explain how homeostasis is the maintenance of a dynamic range of environmental qualities rather than holding the internal environment at a set point. What would be wrong with a set point (say for body temperature) rather than a working range of temperatures? The endocrine system is closely tied to homeostasis functioning. Give two examples of hormones (including their glands of origin and action) that play major roles in homeostatic processes in the body. What happens if these hormones are disrupted in their actions? Also, look at how we adapt to survival in the outside world. Discuss how maintaining homeostasis gives us greater freedom of activity from dependence upon changes in the external environment. What happens during extremes that force our bodies out of homeostatic bounds? Give specific examples. Why is the maintenance of homeostasis especially important during development of new humans within the bodies of their mothers? What can go wrong if specific homeostatic functions are disrupted?
Now take a popsicle stick and dip it into the water and oil to represent a marine animal accidentally swimming througfh an oil spill.
Explain in simple terms how each nephron acts as a tiny blood filter as it produces urine. Where do most waste products from the blood end up? Where do most essential items of the blood end up? How do filtration, reabsorption, and secretion affect th..
Discuss the three components of a circulatory system. Cardiovascular diseases account for more than percent of deaths in the US.
Briefly explain four different evidences of evolution of modern day organisms from a common ancestor. Present these ideas with an approximate timeline of major evolutionary events.
Explain the study of the hypothesis? State the outcome variables and how were they determined?
Create a map of these 3 genes, including the correct order, and map distance between each gene. Describe your reasoning/show your work for both
Most physiological processes in the body can be regulated at three different levels autoregulation within the organ itself, nervous regulation, and hormonal regulation.
What roles does natural variation play in the process of natural selection and, ultimately, evolution?
What is the normal habitat of this gram-negative, facultatively anaerobic, non-endospore-forming, lactose-positive rod?
There is a stable pH and electrical potential difference across the mitochondrial membrane in actively respiring cells. The pH of the cytoplasm is 6.8, the pH of the mitochondrial matrix.
What would happen to the regulation of the tryptophan biosynthesis enzymes in cells that express a mutant form of Trp repressor that (i) cannot bind to DNA or (II) binds to DNA even if no tryptophan is bound to it?
Which food item would cook the fastest and why with reason. What are the similarities between G-protein receptor systems and Tyrosine-kinase receptor systems.
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