Concept explainers
Interpretation:
The given solution contains DNA polymerase and
Concept introduction:
DNA carries the genetic code and genetic information of animals, plants, and bacteria. Friedrichfound the DNA for the first time in 1869. Francis Crick and James Watson first recgnized their molecular structure at the Cavendish Laboratory at Cambridge University in 1953. DNA primers with particular sequences in a single-stranded DNA molecule that bind to DNA. DNA strand is composed of Adenine, Guanine, Thymine, and Cytosine.
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Chapter 4 Solutions
BIOCHEMISTRY (LOOSELEAF)-W/ACCESS
- Need answer ASAP. The double-stranded molecule of DNA: AG/TC is a very good representation of the much larger chromosome. Diagram and label this molecule, then describe how would this molecule look if it were a DNA/RNA hybrid using the AG for the DNA strand.arrow_forwardPstl. EcoRI Origin of replication (ori) Ampicillin Tetracycline resistance resistance (Amp) (Tet") pBR322 (4,361 bp) BamHI Pvull Sall Recombinant Plasmid DNA Bacterial cell contains... No plasmid DNA pBR322 (no insert) Recombinant plasmid 00,000. Host DNA Transformation of E. coli cells +AMP plate pBR322 Figure 7-5 +TET plate Based on the recombinant plasmid growth pattern (bottom row of blue table), which of the depicted plasmid's restriction sites was used to prepare this sample? Explain how you can tell.arrow_forwardQuestion. What would the forward primer sequence look like if it were intended to bind the area of the DNA template?arrow_forward
- True or False. Do single-stranded DNA strands stabilize other strands?arrow_forwardIn the DNA extraction. What is the role of alcohol in the DNA extraction process?arrow_forwardTrue or False. Just write T if it is true and F if it is false. In E. coli both RNA and protein synthesis take place in the cytoplasm. Okazaki fragments are ssDNA CHAINS OF 100-200 nucleotides long, primed by very short RNA primers in bacteria. In eukaryotic gene, the coding sequences are known as introns while the intervening sequences are the exons. The central dogma refers to the fact that proteins are products of information encoded in RNA using a DNA intermediate. The ends of the linear chromosomes are maintained by telomerase to prevent it from shortening during mitosis. The Shine Delgarno sequence is where the RNA pol binds during transcription in prokaryotes The sigma subunit of the E. coli RNA polymerase confers specificity to transcription. Both DNA replication and transcription follow a 5’ to 3’ direction of polarity. Nucleosomes are the structural unit of chromatin. In the lagging strand, the enzyme X removes RNA primers attached by PRIMASE and this gap is then filled…arrow_forward
- This is DWA. You hope to clone an extinct animal species by taking the easy route - using museum bones or tissues. You extract the DNA and use PCR to amplify, then sequence all segments of the genome You are unsuccessful. Later you discover that the museum specimens have been treated with formaldehyde, which forms covalent bonds in DNA, where once there existed H-bonds. What step in your PCR reaction would be inhibited? g -S Knowing this, if a human was exposed to formaldehyde, what enzyme(s) of DNA replication in vivo would be prevented from doing their job?arrow_forwardgene. If the JM109 strain is transformed by the PBKSK plasmid, the strain will produce the B-galactosidase (from the lac gene) and will hydrolyze X-gal to produce the blue compound. Therefore, colonies that were transformed and contain the pBSKS wil you appear blue. IPTG & X-Gal & NO colonies Amp E. coli JM109 E. coli JM109 50 mM calcium chloride-15% glycerol lac lac lac IPTG & I Recovery X-Gal solution at -702C PBSKS White colonies E. coli JM109 E. coli JM109 ampR amp I amp lac lac Heat Shock Non-transformed 42°C E. coli JM109 E. coli JM109 amps amps lac lac IPTG & X-Gal lac I Recovery lac PBSKS BLUE colonies PBSKS ampRI (amp Transformed IPTG & X-Gal & BLUE colonies Amp Hypotheses: Circle the correct answer 1. If PBSKS is transformed into JM109 cells, colonies will be (able/not able) to grow in the presence of ampicillin. a. Why? _ 2. If PBSKS is transformed into JM109 cells, colonies in media with IPTG (will/will not) induce the production the B- galactosidase enzyme. a. Why?_ 3. If…arrow_forwardPick a plasmid . What was its approximate transformation? Express it in # colonies per microgram of DNA transformed. Assume the original DNA was about .001 ug/ul . Count how many colonies you got on one plate (or estimate that number) and figure out how much of the total solution you plated on that plate. Multiply by all the plates, if you plated all of it. OR, if you only plated some of it, figure out how many colonies you would have gotten had you plated all of it. Divide by the number of ug used.arrow_forward
- True or False. Topoisomerase I does not require ATP to break and rejoin DNA strands because the energy of the phospho-diester bond is stored transiently in a phospho-tyrosine linkage in the enzyme’s active site. Explain your answer in 2-3 sentences.arrow_forwardBackward? Bacteriophage T7 helicase moves along DNA in the 5'-to- 3'5'-to-3' direction. Other helicases have been reported to move in the 3'-to-5'3'-to-5' direction. Is there any fundamental reason why you would expect helicases to move in one direction or the other?arrow_forwardTrue or False. In a comparison between the DNAs of related organisms such as humans and mice, conserved sequences represent functionally important exons and regulatory regions, and non-conserved sequences generally represent noncoding DNA. Explain your answer in 2-3 sentences.arrow_forward
- BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage Learning