27. The drug cytochalasin B3 blisks the polymentation of actin muroims Which of the following events of the cell cycle in animal cells would be mod dertly dispued by cytochalasim B? A spindle famation B. spindle attachment to kinetochores C movement of chromosomes to the poles during anaphase. D cleavage furrow formation and kinesis 28. Which of the following pairs of molerades make up an MP A a growth factor and misotic facti B. ATP synthetase and a protease C. cyclin and tubulin D. cyclin and a cyclin-dependent kinase 29. Which of the following statements best describes what would happen if MPF (maationing factor) is introduced imo intature fiog oocytes that are arrested in Ci A. The cells would remain arrested in 0₂ B. The cells would enter Go
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:
Need answers of following questions plz help.
27. The drug cytochalasin B3 blisks the polymentation of actin muroims Which of the following events of the cell cycle in animal cells would be mod dertly dispued by cytochalasim B?
A spindle famation
B. spindle attachment to kinetochores C movement of chromosomes to the poles during anaphase.
D cleavage furrow formation and kinesis
28. Which of the following pairs of molerades make up an MP A a growth factor and misotic facti
B. ATP synthetase and a protease
C. cyclin and tubulin D. cyclin and a cyclin-dependent kinase
29. Which of the following statements best describes what would happen if MPF (maationing factor) is introduced imo intature fiog oocytes that are arrested in Ci A. The cells would remain arrested in 0₂
B. The cells would enter Go
C. The cells would enter milis
D. The cells would begin DNA synthesis
30, If all chromosomes are not attached to the mitotic spinitie at the M pluse checkpot, the cells would most likely be arrested at which of the following points in the cell division cycle or minnis?
A. telophase B. prophase
C. G₂ D. metaphase
31. Which of the following molecules is synthesized at specific times during the cell cycle and forms an active complex with a kinase?
A. PDGF
B. MPF C cyclin
D. Cdk
32. Which of the following statements best describes density-dependent inhibition? A. As cells become more numerous, they begin to squeeze against each other, restricting their size. B. As cells become more numerous, the cell surface proteins of one cell contact the adjoining cells,
and they signal each other to stop dividing C. As cells become more numerous, the protein kinases they produce begin to compete with each other, such that the proteins produced by one cell essentially cancel those produced by its
neighbor. D. As cells become more numerous, the level of waste products increases, which slows
33. Which of the following characteristics would be most important for a chemotherapeutic drug
designed to treat cancer cells?
A. It is safe enough to prevent all apoptosis. B. It does not interfere with metabolically active
C. It specifically inhibits cells entering Go
cells.
D. It specifically inhibits the cell division cycle in rapidly dividing cells
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