Which of the following functions in the regulation of gene expression?   plasmids euchromatin nucleases telomeres nucleoids

Some plants have a hard, cellulose layer protecting them. This hardened layer will prevent the detergent from breaking down the cell wall. Can you think of another way to break open the cells?   Note: The cell lysis and mashing the fruit with your hands or using a blender helps homogenize the DNA. Homogenization is the process of releasing DNA from the nuclei of the cells by breaking apart the cell walls, plasma membranes and nuclear envelope. It also helps to create a uniform mixture.

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Drag the terms to their matching descriptions to review characteristics of eukaryotic chromosomes. (Note that not all t match.) shugoshin G bands kinetochore phenocopy FISH YAC telomerase nucleosome histone chromatin Reset ARS An artificial chromosome created by combining centromeres, telomeres, and origins of replication from yeast. Origin of replication in yeast. A fluorescent DNA probe hybridizes to chromosomal DNA on a slide to locate a sequence in the genome. Regions of a chromosome that are distinguished by staining differences when treated with Giemsa stain. A beadlike structure consisting of DNA wound around histone proteins. Complexes of DNA and protein located in the eukaryotic nucleus. Enzyme that elongates specific repetitive sequences at the ends of linear chromosomes. Protein that protects cohesin of the centromere region from cleavage during meiosis I. A specialized structure composed of DNA and proteins that is the site at which chromosomes attach to the spindle fibers.

Because the polymerization of nucleotides is an endergonic process, energy is required for it to occur. What does DNA polymerase use as its energy source? Group of answer choices ATP that is broken into ADP and P and released Energy from photons of light Entropy created from protein digestion Nucleotides incorporated into a growing chain provide their own energy in the form of trinucleotides

Which region of eukaryotic DNA prevents single-strand breaks and chromosome unraveling, and serves as a signal to DNA repair enzymes that the linear chromosome does not need repairing? the centromere the terminator the promoter the telomere the operator

The figure below shows a centrosome with microtubules attached to the kinetochore. Which of the following BEST describes the figure? O The figure shows an impossible arrangement due to microtubule dynamic instability. O The figure shows a temporary arrangement; soon after this, the microtubules will separate the sister chromatids. O The figure shows an impossible arrangement due to centrosome positioning. O The figure shows a temporary arrangement; soon after this, microtubule shortening will occur.

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What is the function of DNA ligase? put DNA together are involved in transcription break down DNA fix the mismatch pairing are part of the ribosomes synthesis

19.  Which of the following statements is true for tumor inducing plasmids? Group of answer choices This plasmid can induce tumors in all plants The tumor kills the host organism soon after induction Their use provides an efficient method for expressing a eukaryotic gene in a prokaryote This plasmid comes from a eukaryotic organism The plasmid has a region used to produce opines where new genetic information can be added