Cellular respiration is essential for the survival of the Euglena. Why?

Please help me. ​

To take a whiff of your favorite food, you use both? a. motor nerves and your digestive system b. sensory nerves and your immune system c. motor nerves and your skeletal system d. sensory nerves and your respiratory system

List at least three particular pieces of data you would collect to determine the effects of water pollution. what kind of data would you collect (number data, text data, sensor data, would you be able to make any other conclusions by using the data you collect?

Why are some body cells responsive to a particular hormone, whereas others are not? responsive cells have complex signal transduction pathways, whereas cells that do not respond to a particular hormone lack these pathways. responsive cells express a receptor specific for the hormone. all of these choices are correct. responsive cells are located closer to the gland that releases the hormone. whether or not a cell responds to a hormone depends entirely on what type of cell it is (liver cell vs. fat cell vs. nerve cell), because hormones only activate one type of cell.