Which of these diagrams must be included in a model of how body cells are provided with oxygen and glucose? A.1, 3, and 4

B.1, 2, and 5

C.2, 3, and 5

D.1, 2, and 4

Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.