I have assignment for meiosis flip book and I have to draw and label and explain what happens in all the stages like early prophase middle prophase and late prophase for every stage like anaphase, metaphase etc
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Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
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- Nutri Valeur n valories/Caleortes 370 Lipidas 75 9 rans 6 m Bodiores 200 mg Pause Alt Gr Ctri elestérel 0 mg ides 10 g 3% S The microtubules of the spindle apparatus attach to a specialized region of the centromere of each chromosome called the: A) kinetochore B) nucleosome ucieotide D) equatorial plate C) tetrad Use the followina information to answer the next question. A diet rich in lycopene, a nutrient found in tomatoes, can reduce the risk of cancer by preventing genetic damage and abnormal cell growth in regular body cells. Lycopene has been shown to reduce the size of tumours and slow the spread of the cancerous tissue. 6. Lycopene slows the spread of cancerous growth by decreasing the rate of Mitosis, which produces diploid cells Mitesis, which produces haploid cells a. Meiosis, which produces diploid cells d. Meiosis, which produces haploid cells C. 7. What is the phase of mitosis demonstrated in the photograph below? Doc. RND.. Josef Reischig, CSc. - Author's archive, CC…At the spindle assembly checkpoint, kinetochores not attached to spindle microtubules send a molecular signal that delays anaphase. a) True b) False3) Examine the graph showing the relative percentage normal and cancer cells spend in various stages of the cell cycle. Based on the information in the graphs, infer how cancer cells differ from typical, noncancerous cells. Select ALL that apply. A) Cancer cells do not replicate their DNA. B) Cancer cells replicate their DNA too quickly. C) Cancer cells do not go through interphase during their cell cycle. D) Cancer cells spend more time dividing compared to typical cells. E) Cancer cells do not always grow to the same size as typical cells. more than 1 answer. not graded
- 1) If direct stains work so well, why would we ever use indirect stains? Give two reasons why you might choose to use indirect stains instead of direct stains? 2) Assume that two days (dye A and dye B) were applied to bacterial smear. The cells were stained by dye A while the slide background was stained with dye B. Which stain had an anionic chromogen? Which stain had a cationic chromogen?4) What is occurring during the Anaphase stage of mitosis, such as is shown in the figure to the right? A) The DNA is being replicated. B) The homologous chromosomes are separating. C) Sister chromatids are being pulled to opposite poles. D) A cleavage furrow is forming to divide the cell. Inid parents made gametes usingThree actively growing cultures of the same strain of yeast (saccharomyces cerevisiae) are used. Culture A has been incubated for 48 hours and Culture B has been incubated for 24hours and Culture C for 6 hours. a) Make a drawing of the cells from each culture to identify the various stages of the cell division. b) Is there any difference between the 3 cultures?
- This form of cell division involves segregation of sister chromatids. (Choose one answer.) O A) mitosis only O B) meiosis only C) both mitosis and meiosis D) neither mitosis or or meiosis CS Scanned with CamScannerMovement of the chromosomes during anaphase would be most directly affected by a drug that prevents _____. A) formation of a cleavage furrow B)nuclear envelope breakdown C)shortening of microtubules D)elongation of microtubules 22.Kinetochores are the a) sites of spindle fiber attachment to chromosomes. b) regions where two chromosomes remain attached during mitosis. c) same as centromeres. d) structures that give support to the nuclear membrane
- YOU DON'T NEED TO EXPLAIN THESE QUESTIONS JUST PROVIDE ANSWER DNA separates during ____ of mitosis. a)Prophase b)Telophase c)Metaphase d)Interphase e)Anaphase 2. What separates during mitosis? a)Single DNA strands b)Cytoplasm c)Sister chromatids d)Telomeres e)Homologous chromosomes 3. Oncogenes are associated with cancer because they Oncogenes are associated with cancer because they (select one answer) Cause cells to initiate a death pathway Fail to put a “brake” on the cell cycle Push cells through the cell cycle Divert cells into G0 phase Slow down the cell cycle1) What is the size of the following single-stranded piece of DNA? ATCGTGTGCT A) 10 b B) 20 bp C) 20 b 2) Mitosis is to cytokinesis as Meiosis is to: A) Cell plate B) Interkinesis C) Metaphase-1 3) During cell division, DNA synthesis and replication does not take place at the beginning of: A) Mitosis B) Meiosis-II 4) What is the size of the following single-stranded piece of RNA? AUCGUGUGCU A) 10 bp B) 10 b| C) 20 bpWhat is differential centrifugation? Explain how it can be used to separate cellular organelles.