Willem felt heat as his hand got close to a flame. a signal was sent to his brain, telling him to pull his hand away. which type of cells were responsible for detecting the heat?

a. myocardium cells
b. motor neurons
c. fibroblasts
d. sensory neurons

Which statement best illustrates that problem solving can create new medical devices? robert hooke was in charge of verifying the information that was sent to the royal academy. william harvey did experiments with apes to learn about the circulatory system. the stethoscope was invented because the physician did not want to put his head on women's chests to listen to their heart and lungs. anton van leeuwenhoek was a very curious man and looked at just about everything under this microscope.

Aresearcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (tmv). the cell contents are left in a covered test tube overnight. the next day this mixture is sprayed on tobacco plants. we expect that the plants would ) develop some but not all of the symptoms of the tmv infectionb) develop the typical symptoms of tmv infectionc) not show any disease symptomsd) become infected, but the sap from these plants would be unable to infect other plants

Why is mental-emotional health important? check all that apply. encourages others one feel better improves physical fitness fosters better relationships one do better in school enables one to enjoy free time