DNA Structure and Replication What is the name given to the points at which a DNA helix is unwound and new strands develop? Replication forks Leading strands Replication origins Okazaki fragments Replication forks Leading strands Replication origins Okazaki fragments ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication DNA replication takes place in which direction? 3' to 5' 5 'to 3' Vary from organism to organism Randomly 3' to 5' 5 'to 3' Vary from organism to organism Randomly ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication Which of the following is an active site on its single polypeptide chain for DNA Polymerase I? 5' → 3' polymerase 5' → 3' exonuclease All of these 3' → 5' exonuclease 5' → 3' polymerase 5' → 3' exonuclease All of these 3' → 5' exonuclease ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication The higher order structure of DNA shows symmetry, whereas the higher order structures of most proteins do not. Why isn't protein shape more regular like DNA? DNA has one main function in cells whereas proteins have many. Some S amino acids cause proteins to bend; others cause protein to flatten. The many different amino acid R groups on proteins confer many different shapes. All of these DNA has one main function in cells whereas proteins have many. Some S amino acids cause proteins to bend; others cause protein to flatten. The many different amino acid R groups on proteins confer many different shapes. All of these ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication Taylor, Woods and Hughes labeled Vicia DNA by allowing new DNA synthesis in the presence of radioactive thymine. After DNA replication (S phase of the cell cycle), it was observed that both chromatids of a chromosome were labeled neither chromatid was labeled both (a) and (b) only one chromatid of a chromosome was labeled both chromatids of a chromosome were labeled neither chromatid was labeled both (a) and (b) only one chromatid of a chromosome was labeled ANSWER DOWNLOAD EXAMIANS APP
DNA Structure and Replication What is the main damaging effect of UV radiation on DNA? Single strand break Dehydration Formation of thymine dimers Depurination Single strand break Dehydration Formation of thymine dimers Depurination ANSWER DOWNLOAD EXAMIANS APP
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