Biol 1020 - Module 1 Study Guide Rated A+

Our genes encode all the proteins necessary to make a human. T or F? {Ans: Lecture 2}Our DNA code contains large amounts of "non-coding" or "junk" sequences. T or F? {Ans: Lecture 2}Mutation {Ans: Accidental changes to a DNA sequence that can provide heritable genetic variation}Most DNA molecules are present in the cell in double stranded form. Which of the following statements are correct? A The two DNA strands in a double helix each have a 5' and a 3' end. B. In doublestranded DNA the nitrogenous bases face the outside of the molecule. C The two 5' end and the two 3' ends of the two DNA strands are aligned, i.e. they are found on the same side of the molecule D Hydrogen bonds between nitrogenous bases are used to link the two DNA molecules that make up doublestranded DNA. E The base pairs in doubles stranded DNA each contain a purine and a pyrimidine base. {Ans: a, d and e}Which of the following is NOT a primary function of proteins? A catalysis B hormonal signaling C contributing to the physical structure of cells D storage of genetic information E All answers are correct.