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A: This question is based on the functioning of cell cycle and cell check points.
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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:
in term of signal transduction how cell cycle/division is controlled??
((while you are answerig plz write the refrence.))
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- [Select 1 Indicate whether each of the following statements related is likely to be true or false. complex phosphorylates its targets. ww ✓ Similar to the Cdks, when activated, the anaphase-promoting A ***** ** Q Search 3* ***** ****** ****** Il app.honorlock.com is sh 99+ ** *** 13You are studying three proteins that you think are important Yor progression through the cell cycle. You know that one of them is a phosphatase (P1) and the other two are kinases ( K1 and K2). You add these enzymes in different combinations as shown below, and find that they have different effects on the activity of a cyclin dependent kinase, cdk2p. cdk2p Inactive Active cdk2p + K1 cdk2p + K2 Inactive cdk2p + K1 + K2 Inactive cdk2p + P1 cdk2p + P1 + K2 cdk2p + P1 + K1 Inactive Inactive Active cdk2p + P1 + K1 + K2 Active(Q) During M-phase of cell cycle, active M-Cdk phosphorylates several target proteins in order to regulate their activities. Identify TWO specific examples of such target proteins that are phosphorylated by active M-Cdk, and explain how each of them affects the cell (i.e. their respective biological significance). i) target protein phosphorylated: _______________________________ Biological Significance: ii) target protein phosphorylated: _______________________________ Biological Significance:
- What triggers Mad/Bub activation in spindle assembly checkpoint? be specific please Thank you!- - da a Lenuar UVIUI IS UIE UI Ue processes that support the Cell theory. Consider Figure 1 as eukaryotic cell and to be referred in this question. Figure 1 a) Based on Figure 1, does the cell represent a gamete cell? Justify your answer. b) State the value of 2n in Figure 1. c) Using a labelled diagram, ilustrates the cell in Figure 1 after t undergoes S stage. d) If cell in Figure 1 experienced a non-disjunction event on its largest chromosomes during meiosis 2, illustrates the probable gametes it produces using a labelled diagram. e) Give the probabity percentage for each type of gamete produced in 2d). f) Does cell division in E col and in human cells serves the same purpose? Justify your answer.13) A phosphotase removes an inhibitory phosphotyrosine phosphate from the serine protein kinase, in MPF whcih activates the kinase and triggers the initiation of mitosis. true or false
- Mitotic spindle function relies heavily on microtubule motors. For each of the following motor proteins, predict the effect on spindle formation, function, or both of adding a drug that specifically inhibits only that motor: kinesin-5, kinesin-13, and kinesin-4.What is the significance of the cell cycle control system and checkpoints? Explain step by step in your own words. [please make it simple]Somatic cells reproduce by______________,while sex cells reproduce by ___________.
- What cellular mechanism(s) ensure that passage through the cell cycle is unidirectional and irreversible? What mo-lecular machinery underlies these mechanism(s)?You have isolated a temperature-sensitive cell-cycle mutant. The mutated gene encodes the activating subunit of the APC. The mutant protein is defective at high temperatures. You sort several thousand cells and recover the WT-looking profile below: Cells (in thousands) O G1 OM O G2 OS E 5 Next you grow the mutant at the restrictive high temperature and sort an equal number of cells. First, what phase of the cell cycle do you expect the cells to arrest in? 3 2 50 100 150 200⁰ 250 Propidium iodide fluorescence ♫ #tv A X MacBook AirThe cell cycle contains a series of events that control the division of cells. It is controlled by which of the following: P. dephosphorylation of cyclin-dependent kinases (S) Q. binding of CDK inhibitor proteins (R) R. cyclin synthesis and degradation (P) S. phosphorylation of cyclin-dependent kinases (Q) R and S P, Q, R, and S Q and R P and Q