Page 08 11. The following list describes changes which take place during temperature regulation in mammals. 1 Vasodilation 2 Vasoconstriction 3 Contraction of hair erector muscles 4 Relaxation of hair erector muscles Which of these changes takes place in response to a decrease in body temperature? A 1 and 3 only B 1 and 4 only C 2 and 3 only D 2 and 4 only 12. The diagram shows a bacterial plasmid with restriction sites for three different restriction endonucleases, Sal1, Eco R1 and Bam H1. restriction site for Bam H1 restriction site for Eco R1 restriction site for Sal1 Bacterial Plasmid Key Which row in the table identifies the number of fragments produced if the plasmid was cut with the combinations of restriction endonucleases shown? Combination Sal1 and Bam H1 Sal1 and Eco R1 A 3 4 B 3 5 C 4 4 D 4 5