Exam DNA Technology questions wish correct answers

How is DNA organized structurally? (generally only, I won't ask you to draw atomic structures of molecules but I do expect you to know general features) CORRECT ANSWER DNA is a double stranded string of nucleotides intertwined into a helical shape. Three billion base pairs of pairs of DNA packed into 46 chromosomes which organize and arrange DNA within the nucleus. Sugar group, phosphate group, and nitrogous base. What nucleotides are in DNA? in RNA? CORRECT ANSWER Nucleotides in DNA are composed of a five carbon sugar molecule called deoxyribose, a phosphate group, and one of four different nitrogen containing base molecules (adenine, thymine, cytosine, guanine) In RNA sugar unit is called ribose, uracil is substituted for thymine, a single strand molecule representing a complimentary copy of portion of one strand of DNA, and shorter. What is the process that leads to an mRNA copy of a DNA gene called? CORRECT ANSWER Transcription What is the process that leads to a protein from an mRNA called? CORRECT ANSWER Translation Which nucleotide bases pair with which nucleotide bases? (i.e. what nucleotides are complementary?) CORRECT ANSWER In DNA Cytosine and Guanine pair together while Adenine and Thymine pair together. In RNA however Uracil is substituted for thymine and pairs with Adenine. Different sequences of A,T,C,G in triplets code for amino acid proteins and are organized in genes.