11. To have communication between cells, you must have a A) B) C) D) receptor. s
ID: 267969 • Letter: 1
Question
11. To have communication between cells, you must have a A) B) C) D) receptor. signaling molecule. responding cell. All of these choices are correct. 12. A cell that responds to an environmental condition by the release of a chemical is an example of which of the following elements of cellular communication? A) a signaling cell B) a signaling molecule C) a receptor protein D) a responding cell E) None of the other answer options is correct 13. A chemical that binds to a cell and causes its activity to change is an example of which of the following elements of cellular communication? A) a signaling cell B) a signaling molecule C) a receptor protein D) a responding cell E) None of the other answer options is correct Which is the CORRECT order for these steps in cell signaling? A) B) C) D) 14. signal transduction, receptor activation, response response, signal transduction, termination receptor activation, response, signal transduction receptor activation, signal transduction, response 15. Which of the following is TRUE of DNA? A) B) C) D) E) Successive nucleotides in a strand are connected by hydrogen bonds. A phosphate group in a nucleotide is attached to the 3' carbon in ribose. A purine always forms a complementary base pair with a pyrimidine The percentage of the purine A always equals the percentage of the purine G. It is used by ribosomes for translation. 16. are the subunits of nucleic acids, andare the subunits of proteins. A) Nucleotides; amino acids B) Bases; polypeptides C) Polypeptides, sugars D) Amino acids; nucleic bases E) Nucleoli; amino acids Page 3Explanation / Answer
11. D. All of these choices are correct
12. A. Signalling cell
13. B. signalling molecule
14. D. receptor activation, signal transduction, response
15. C. A purine always forms a complimentary base pair with a pyrimidine
16. A. Nucleotides, amino acids
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