I need help like now please. Which of the following best describes how an organ system servers the needs of cells? Is it A. The cardiovascular system pumps blood, which carries nutrients and oxygen, to cells in the body. B. The muscular system works with skeletal system to move the body. C. The integumentary system absorbs oxygen that carried cells. D. The small intestine absorbs nutrients that are used in cell functions.

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