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A 33 year old woman discovers a lump in her breast on her left breast on self examination. Her mother and sister both had breast cancer. A mammogram demonstrates an ill-defined density in the oter quadrat of the left breast, with microcalcifications. Needle aspiation reveals the presnece alignant ductual epithelial cells Genetic screening identifies a muation in BRCA1. In addition ot cell cycle control, BRCA1 protein promotes which of the following ceullar funcitons?
Apoptosis
Cell adhesion
DNA repair
Gene transcrption
Transmembrane signalling
Explain the sites and actions of the cardioinhibitory and cardioacceleratory centers and also discuss the factors that affect heart rate and stroke volume.
Which of the statements best describes the shape of its teeth? How many teeth does it have in the premaxilla.
Genetic variation is important in reproducing populations because it allows the population to adapt to changing environments. Those individuals who are genetically best adapted to an environment have a greater tendency to survive and reproduce.
List whether the movement is diffusion, osmosis, active transport, or bulk flow. Clarify the adaptations that increase the effectiveness of this movement. what is the meaning of this observation.
How is geological energy different from biological energy. Charlie has the blood test that shows a normal level of LDLs other than an elevated level of HDLs in his blood. Because his family has a history of cardiovascular disease, he wonders if he mu..
It also makes an antidote molecule called brevenal that binds to sodium channels and protects them against the toxin. Brevenal may end up being a treatment for CF; in a sheep CF model, brevenal blocked bronchoconstriction and enhanced the clearance o..
Describe the different steps of a growth curve for microbes, and what factors influence each step. Explain in 100+ words.
Male songbirds sing in spring because increasing daylength at this time stimulates testosterone production which spurs growth of song control circuits in the brains of male songbirds. Choose the best level of causation addressed by this explanatio..
If the cell cannot recover from injury, the damage is irreversible and cell death is the result. Define, compare and contrast the 3 pathognomic signs of cell death.
During the method of inspiration, the ______ contracts, pulling downward. Also, the ______ muscles contract and lift the rib cage. Together, these muscle contractions result in the ______ in the pressure in the ______ cavity.
Why is social clock an important consideration when understanding development. It is a useful tool for making comparisons across different generations to see if the hypothesized developmental course is valid.
Discuss some of the recent (within five years) and current research on Nutrition, Obesity, and Atherosclerotic Cardiovascular Disease.
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