Which of the following amino acids is unique in that it can bind both non-specifically to the DNA backbone as well as to specific DNA bases? a) Lysine  b) Asparagine c) Arginine  d) Phenylalanine e) Leucine

The DNA double helix is stabilized by ...   a)  H-bonds between the sugar-phosphate backbones.   b)  ionic interactions between the sugar-phosphate backbones.   c)  H-bonds between complementary bases.   d)  a and c   e)  a, b and c

Is this the correct answer? (26)

What type of damage does UV light do to DNA? a) It causes adjacent T bases to form a new bond which not always replicated properly b) It only causes nonsense mutations c) It directly deletes nucleotides d) It directly changes Cs to Gs C Listen In a particular genetic condition, the DNA is changed from 5' GTC3' to 5' GGC 3' The end result of the mutation will be a (use the codon table below) UUU UUC Phe UUG} Leu CUU CUC CUA CUG AUU AUC AUA AUG GUU GUC GUA GUG } Leu lle Met Val a) Frameshift Mutation b) Silent Substitution. c) Missense Mutation. d) Nonsense Mutation UCU UCC UCA UCG CCU CCC CCA CCG ACU ACC ACA ACG GCU GCC GCA GCG Ser Pro Thr Ala UAC}Tyr UAA UAG Stop CAU CAC CAA CAG AAU AAC AAA AAG } GAU GAC GAA GAG} His Gln Asn Lys Asp Glu UGU UGC UGA UGG CGU CGC CGA CGG AGU AGC AGA AGG GGU GGC GGA GGG Cys Stop Trp Arg Ser Arg Gly