Copy of Vertebrate immune responses involve communication over short and long distances

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Vertebrate immune responses involve communication over short and long distances. Which of the following statements best helps explain how cell surface proteins, such as proteins and T cell receptors, mediate cell communication over short distances? -The proteins interact directly with proteins on the surfaces of other cells Air is less dense at very high elevations, so less oxygen is available than in the denser air at sea level. Based on the model in Figure 1, if a person travels from sea level to a high elevation location, which of the following correctly predicts the response to the decreased blood oxygen level? -More erythropoietin will be secreted from the kidneys, increasing production of erythrocytes. Which of the following outcomes will most likely result from the irreversible binding of the G protein? -The intracellular concentration of glycogen will increase. Question Based on Figure 1, which of the following statements best describes the epinephrine signaling pathway? -In involves enzymes activating other enzymes. Question The endocrine system incorporates feedback mechanisms that maintain homeostasis. Which of the following demonstrates negative feedback by the endocrine system? -After a meal, blood glucose levels become escalated, stimulating beta cells of the pancreas to release insulin into the blood... Based on Figure 1, which of the following best explains how exercise causes blood glucose levels to rise? -Epinephrine is a chemical, often released during periods of exercise Damaged tissue releases chemicals that activate platelets and stimulate the formation of blood clots. Which of the following predictions about the activity of platelets best describes a positive feedback mechanism? -Activated platelets release chemicals that activate more platelets. Question Cortisol is a hormone produced in response to stress, including starvation, in humans. Which of the following is most likely an immediate effect of a starvation-induced increase in cortisol secretion? -Increased mobilization of fatty acids from fat cells. Responses Cell communication is critical for the function of both unicellular and multicellular eukaryotes. Which of the following is likely true of cell signaling?

-Similar cell signaling pathways in diverse eukaryotes are evidence of conserved evolutionary processes. Which of the following statements accurately uses the information presented to support the hypothesis that interruption of M function in a single body cell can result in cancer? -Growth factor signaling can trigger mitosis in cells that are direct contact with other cells Question Which of the following observations best supports the hypothesis that negatively regulates neurotransmitter release? -inhibition of CDK5 activity in neurons increases the movement of synaptic vesicles to the plasma membrane in response to a specific stimulus. Question In mammals, an increase in the concentration of sodium in the blood triggers the release of antidiuretic hormone (ADH) from the pituitary gland. As the concentration of sodium in the blood returns to previous levels, the release of ADH from the pituitary gland is reduced. Based on the information presented, which of the following describes the most likely role of ADH in maintaining blood osmolarity? -ADH promotes an increase in the movement of water into the bloodstream. Which of the following research questions would best guide an investigation of the link between the structure of the signaling molecules and the evolution of quorum sensing? -common ancestor with similar signaling molecule

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