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During sleep, relay neurons in the thalamus reduce information reaching the cerebrum by altering their membrane potential. Are these neurons more likely to have depolarized or hyperpolarized? Explain you reasoning.
Explain how adjusting the pH of your reaction flask can be used to artificially bypass the effects of the inhibitors used in your experiments. What would you add to your flask if you were actually going to perform this experiment?
Describe gene duplication, homeobox genes, and retention of juvenile characters in the process of macroevolution. (Please be specific)
A 0.20-mL sample of a solution containing H-3 that produces 3.7 x 10^3 cps is injected into the bloodstream of an animal. After allowing circulatory equilibrium to be established, a 0.20-mL sample of blood is found to have an activity of 20. Cps. ..
You have three tubes containing solutions of the protein human chorionic gonadotrophin (HcG) in PBS. All three contain 2 ml. Tube A is at a concentration of 28 mg/ml. Tube B is at a concentration of 78 mg/ml. Tube C is at a concentration of 40 mg/..
Cells have several mechanisms to prevent the production and accumulation of truncated protein fragments. To illustrate why these fragments can be deleterious, consider a transcriptional activator protein called Groovy that binds to an enhancer ele..
Explain body composition and the risks associated with excess body fat. Assess factors that influence the obesity epidemic.
Acetoacetate may be reduced to 3-hydroxybutyrate. What serves as a better reducing agent, NADH or FADH2? Explain.
Why or why not explain with reason? Work the genetics problem predicting the frequencies of the versions of this trait among their prospective children.
The population of Greece is 11-million people. The birth rate is 9-per thousand per year and the death rate is 9-per thousand per year. The fertility rate is 1.3 children per woman. Estimate the increase in annual food production required to feed ..
What is a keystone species? a. A species that is not common, but whose presence has a large impact on other species. b. A predator that is at the top of the food chain--meaning that nothing eats it.
how many possible fragments can be presented via MHC class I and/or II from these specific examples and in general for all oligoglycosyceramides? Explain your answer.
There is evidence that viruses are important in providing a way to obtain nutrients from dying organisms that lysed after viral infection. Find specific examples of ways in which viruses might play vital roles in ecosystems.
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