* Read and analyze each item carefully. Choose the letter of the correct answer fror on the space provided before each number. 16. The type of cell which carries oxygen from lungs or gills to all the bod waste product of metabolism, to the lungs where it is excreted. A red blood cells B.muscle cells C. brain cells D. skin 17. It helps to maintain posture and circulate blood and other substances t A. brain cells B. muscle cells C. red blood cells D. S 18. The type of cell that send and receive electrical and chemical signals. A. brain cells B. skin cells C. muscle cells D. egg ce 19. This system acts as a protective barrier between the outside and the A. skin cells B. egg cells C. brain cells D. musc 20. These are the cells utilized by female organisms tp reproduce offsp A. skin cells B. egg cells C.muscle cells D. brai Part II: Performance ​