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- Chromatin is composed ofa) DNAb) DNA and proteinsc) DNA, RNA and proteinsd) NoneWhen the dna is relaxed in the cell and is all stringy and evenly spread throughout the nucleus, we call it _________Acetocarmine is a natural stain that comes from an insect. This stain binds to chromatin and stains it red. DNA in eukaryotic cells is packed with proteins to form a structure called chromatin; thus it is useful for identifying nuclei. Draw a cell from a potato and label what would be stained with acetocarmine.
- DNA in an open configuration is common in the darkly staining regions called heterochromatin. True FalseFor each of the following pairs of chromatin types,which is the most condensed?a. 100 Å fiber or 300 Å fiberb. 300 Å fiber or DNA loops attached to a scaffoldc. euchromatin or heterochromatind. interphase chromosomes or metaphasechromosomesWhich of the following is not true for chromatin?a) Organized structure of DNA and proteinb) These are highly condensed DNAc) It is found in the nucleusd) It contains a single dsDNA
- DNA that is typically loosely spread out as thin threads within the nucleus is known as ________. nucleosome chromatin chromosome chromatid double helixA chromosome consists of a long DNA molecule wrapped around protein clusters. The DNA you extracted still has some protein bound to it. To get pure DNA, the protein must be removed. A common way to do that is to denature the protein. What would be an easy way to do that?A DNA antisense strand contains the following nucleotide base sequence:CGA TTT GGT TGA How many amino acids does the mRNA strand above code for?
- Large DNA damage is primarily recognized by: Question 21 options: changes to tertiary structure of DNA scanning regions of euchromatin changes in primary structure of DNA changes in secondary structure in DNA scanning each individual nucleotide in the DNA moleculeWhich is NOT a true difference between messenger RNA and DNA? (i.e., which of the following statements is false?) DNA remains in the nucleus (except when the nuclear envelope breaks down during mitosis), whereas mRNA is never in the nucleus; it is always in the cytoplasm. A DNA molecule has a longer life span than a typical molecule of RNA. DNA has thousands of genes; mRNA is usually a copy of just one gene. DNA has thousands of genes; mRNA is usually a copy of just one gene.In the ER lumen nascent polypeptide chains are kept from misfolding or aggregating until an entire domain or polypeptide is completed and can fold properly. true false
