A student in a biology class is examining a cell under a microscope. The student can identify a cell membrane, cytoplasm and DNA. The cell does not seem to have any membrane bound organelles. What type of cell is the student most likely looking at under the microscope? Explain your answer.

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.