Scientists were studying three organisms (B, D, and G) for the amount of time spent by the cell in each stage of the cell:cycle. The data obtained by them are represented in the table belowOrganismTime spent in each cell stage in minutesG1G2M182412161000.0.G18481420The best possible conclusion regarding the organism Dis thatإختر أحد الخيارات:It divided in the G1 phase .a OAre actually at the end of GO phase b O.It Contains no DNA.c OIt Contains no RNA d OIt contains only one chromosome that is very short .e C

The cell cycle is the process through which a cell can divide, develop, and repair itself. There are…

Scientists were studying three organisms (B, D, and G) for the amount of time spent by the cell in each stage of the cell :cycle. The data obtained by them are represented in the table below Organism Time spent in each cell stage in minutes G1 G2 18 24 12 16 100 0. 18 48 14 20 The best possible conclusion regarding the organism Dis that إختر أحد الخيارات It divided in the G1 phase .a O Are actually at the end of GO phase .b O It Contains no DNA .c O It Contains no RNA d O It contains only one chromosome that is very short e O

Scientists were studying three organisms (B, D, and G) for the amount of time spent by the cell in each stage of the cell :cycle. The data obtained by them are represented in the table below Organism Time spent in each cell stage in minutes G1 G2 18 24 12 16 100 0. 18 48 14 20 The best possible conclusion regarding the organism Dis that إختر أحد الخيارات It divided in the G1 phase .a O Are actually at the end of GO phase .b O It Contains no DNA .c O It Contains no RNA d O It contains only one chromosome that is very short e O

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter10: Cell Division And Mitosis

Section: Chapter Questions

Problem 2ITD

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Assume that you are growing mammalian cells in culture. You are able to synchronize the culture, meaning all of the cells undergo each stage of the cell cycle at the same time. The graph shows themamount of DNA in the nuclei of cells during cycle 1 and cycle 2 of cell growth II III IV First eycle Second evcle Amount of DNA in nucleus
orelearning.com/index.cfm?method%3DcResource.dspView&ResourcelD=D450&ClassID=D49 4. In what cellular function does the structure shown here play a role? O A. They play a major role in protein synthesis. O B. They act as the powerhouse for the cell. O C. They are involved in the separation of chromosomes during cell division. O D. They are inyolved in photosynthesis.
Cell culture is very widely used to study molecular changes that occur in cancer; to analyze infectious viruses, mycoplasma, and some protozoa; and for many routine genetic or chromosomal analyses. State five cells that are used in this condition.
The following data indicates the percentage of time an average animal cell spends in each part of the cell cycle if it replicates every 24 hours. Stage of Interphase G1 S-phase G2 Average Percentage of Time Spent 50 % 23% 19% Stage of Mitosis Prophase Metaphase Anaphase Telophase Average Percentage of Time Spent Procedure 1-2: Identifying Str 4% 0.8 % 0.18% 3% 1. Redraw the cell cycle in a pie chart representing the amount of time spent in the different parts of the cell cycle. 2. The cells in our body do not replicate every 24 hours. What parts of the cell cycle do you think are extended when a cell's cycle is longer? Why? Why do the other parts of the cycle not get longer? 3. Compare when DNA is being replicated during the cell cycle to the amount of time the cell is performing transcription to eventually make proteins. How many times in a cell's reproductive cycle does the duplication of DNA occur vs the amount of time the cell is transcribing the DNA. Why does this make sense with…
When considering the stages of the cell cycle, which stage is best associated with cells that do not divide, such as nerve cells? G1 phase M phase O None - all cells divide S phase G2 phase GO phase Pickles are often preserved in a 20-30% salt solution called brine. How does brine prevent contamination by microorganisms? Bacteria can't survive in hypotonic solutions because of the added pressure of the water they take in causing them to burst. O Bacteria can't survive in a hypertonic solution because they lose too much water and die. O The high salt concentration increases the pH of the environment, making it unfavorable for bacteria to live there. The high salt concentration creates an isotonic environment that the bacteria cannot live in. Bacteria cells are unable to digest the salt, thus killing the cells by starvation.
collect the weight data from https://video.esc4.net/video/assets/Science/Biology/Gateway%20Resources/cell%20homeostasis%20virtual%20lab%20-%20activity/index.html
How long does it take for a cell to take one complete cycle? The answer varies on the type of cell and the species. For instance, a liver cell completes its cell cycle for over 22 hours (Becker and Lane 1965) while other somatic cell lasts to about 18 hours. Can you cite other types of cells that undergo cell cycle and the time it takes to complete the cycle? List five below.
A cell stops proliferating when treated with a chemical analog to fucoxanthin. When these cells are analyzed and compared to untreated cells according to the amount of DNA they contain using flow cytometry, the graphs in the figure below are obtained. Which of the following answers would NOT cause this result?
Biologists have long been interested in the effects of radiation on cells. In one experiment, researchers examined the effect of radium on mitosis of chick embryo cells growing in culture. A population of experimental cells was examined under the microscope for the number of cells in telophase (as a measure of mitosis occurring) before, during, and after exposure to radium. The results are shown in the Figure. What is the effect of radium exposure on mitosis? Source: R. G. Canti and M. Donaldson. 1926. The effect of radium on mitosis in vitro. Proceedings of the Royal Society of London, Series B, Containing Papers of a Biological Character 100:413419.
When studying living cells in a laboratory, researchers sometimesuse drugs as a way to cause cells to remain in a particular phaseof the cell cycle. For example, aphidicolin inhibits DNA synthesisin eukaryotic cells and causes them to remain in the G1 phasebecause they cannot replicate their DNA. In what phase of thecell cycle—G1, S, G2, prophase, metaphase, anaphase, or telophase—would you expect somatic cells to stay if the followingtypes of drug were added?A. A drug that inhibits microtubule formationB. A drug that allows microtubules to form but prevents themfrom shorteningC. A drug that inhibits cytokinesisD. A drug that prevents chromosomal condensation
Discuss the cell cycle with the aid of a diagram. 6-8 hours INTERPHASE Sphase DNA I replicated 6-10 hours G, phase Cell metabolically active; duplicates organelles and cytosolic components starts replicating G, phase Cell growth continues enzymes and other proteins are synthesized and replication of centrosomes is completed 46 hours Exit from cell cycle nondividing cell) centrosomes. MITOTIC (M) PHASE Prophase Metaphase Anaphase Telophase
Which of the following statements best describes the process of phase separation in cells? Proteins can assemble as liquid droplets that are not bounded by a membrane in either the cytoplasm or nucleus A protein can separate into different organelles dependent on the phase of the cell cycle Proteins that are assembled in one phase of the cell cycle and degraded in the next are said to undergo phase separation Signal sequences can target proteins assembled in the cytoplasm into the lumen of the endoplasmic reticulum