DNA with a G-C content of 50% will melt at approximately 70 °C 100 °C 60°C 90 °C TRUE ANSWER : ? YOUR ANSWER : ?
Replication in E. coli is initiated by the generation of short RNA primers using reverse transcriptase primase both (a) and (b) RNA polymerase TRUE ANSWER : ? YOUR ANSWER : ?
What does ligase do during replication of DNA? Joins nicks in DNA strands Synthesizes the lagging strand Makes copies of mRNA from DNA Digests mRNA when it is no longer needed TRUE ANSWER : ? YOUR ANSWER : ?
In DNA double helix, the two DNA chains are held together by hydrogen bonds between the pair of bases covalent bonds between the pair of bases None of these ionic bonds between the pair of bases TRUE ANSWER : ? YOUR ANSWER : ?
In DNA, nucleotides are covalently joined together by 2', 5' phosphodiester bonds to form a repetitive sugar-phosphate chain 3', 5' phosphodiester bonds to form a repetitive sugar-phosphate chain 2', 3' phosphodiester bonds to form a repetitive sugar-phosphate chain 3', 4' phosphodiester bonds to form a repetitive sugar-phosphate chain TRUE ANSWER : ? YOUR ANSWER : ?
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? 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. TRUE ANSWER : ? YOUR ANSWER : ?
Automated DNA sequencing uses the chain termination method either (b) or (c) with no primer but with a polynucleotide primer labeled with a fluorescent dye but with an oligonucleotide primer labeled with a fluorescent dye TRUE ANSWER : ? YOUR ANSWER : ?
In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band all of these below DNA containing 14N with 14N-containing DNA above DNA containing 14N TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a structural motif in DNA binding proteins? bZIP TFIID helix-turn-helix zinc finger TRUE ANSWER : ? YOUR ANSWER : ?
The nicks or gaps between Okazaki fragments are eventually sealed by polymerase gyrase DNA ligase RNA ligase TRUE ANSWER : ? YOUR ANSWER : ?