Concept explainers
To determine: The application of FISH in obtaining the telomeric chromosomes in the G2 phase of the cell cycle.
Introduction: Fluorescent in situ hybridization or FISH is the technique, which uses fluorescent probes or radioactive elements to diagnose and detect any chromosomal abnormality. For example, cancer cells are detected by this technique. Also, other abnormalities such as aneuploidy, deletions, and duplication are detected by FISH.
Explanation of Solution
Humans are the eukaryotic diploid organisms, in which 23 pairs or 46 chromosomes are present. The telomeres are the
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Chapter 17 Solutions
BIOLOGY
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- Classifiation of Llfe A new organism was discovered in a deep sea vent at the bottom of the ocean. The researchers collected the sample and made careful observations of it. The picture at right shows a microscopic image captured at 1000X its actual size. Below are some other observations made: • When DNA was isolated from the cell, it was mixed with an equal portion of histone proteins • There are no visible organelles present inside the cell • The specimen seem to die in the presence of oxygen • Able to live in conditions that mimic deep sea vents without any external food source provided Based on these observations, determine each of the following and provide a clear rationale. A) To which domain would you assign this organism? Why? B) Propose a hypothesis of how they obtain nutrients. Are these most likely autotrophs or heterotrophs? Provide a rationale.arrow_forward14arrow_forwardTime left 1 If you made a plant cell drawing and that drawing measured 100 mm, what is the plant cell's magnification that measured 20 um under the microscope? Answer:arrow_forward
- Describe heterochromatin and euchromatin when viewed under a light micrscopearrow_forwardlabel cell structures. the photo is of stained mammalian cellsthat are under under a compound light microscope at 400x total magnification. the cells were treated with cell fixing agent, methylene blue stain, and eosin stain.arrow_forward5-10 sentences and differences with concise and direct to the point answersarrow_forward
- IStructureSE Add-ons Help Last edit was seconds ago Arial 8. BIU A 1 1 2 3 4 6 Match: Read about each organelle. Then match each organelle to its function/description. Capsule A. Hair-like structure that the cell uses for movement. Nucleoid B. Hair-like structure that attaches the cell to a surface and can transfer genetic material from one cell to another. C. Region inside the cell that contains genetic material but is not surrounded by a nuclear membrane. Plasmid Flagellum D. Outermost layer of the cell that provides protection. Pilus E. Circular piece of genetic material. Cempare Wh hecterialcell animal coll2arrow_forwardPart A: Please help me identify Parts A, B, and C. • answer choices for A: Chloroplasts, DNA, Plasma Membrane • Answer choices for B: DNA, Cytoplasm, Chloroplasts •Answer choices for C: DNA, Chloroplasts, Plasma Membrane Part B: Fill in the blanks. In the image, the DNA _____ contained in a membrane-bound nucleus. This means that the cell shown is an example of a _____ cell. Answer choices for the first blank: is or is not. Answer Choices for the second blank: Prokaryotic or Eukaryoticarrow_forwardHow to write the methodology? I have a practical of HOMOGENIZATION AND FREEZE-DRYING, I need to do a lab report, but I don't know how to write the methodology. Here is the introduction: HomogenizationHomogenization is a process that involves breaking apart cells to release theircytoplasm and its contents. When the purpose is to extract organelles, it is frequentlydone in two steps; first, using a blender to break the tissue up, and then with anultrasonic or mechanical tissue disruptor. The organelles are then generally separatedusing differential centrifugation.Freeze-dryingFreeze-drying also known as lyophilization, and it is a dehydration process typicallyused to preserve perishable material or make the material more convenient fortransport. It works by freezing the material and then reducing the surrounding pressureto allow the frozen water in the material to sublimate directly from the solid phase tothe gas phase.arrow_forward
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