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Questions and Answers
What method was used to analyze the proteins present in sea urchin eggs in the experiment mentioned?
What method was used to analyze the proteins present in sea urchin eggs in the experiment mentioned?
- Radioactive labeling (correct)
- Western blotting
- Immunofluorescence
- PCR amplification
What was observed about the protein that gradually built up but was rapidly degraded when cells divided?
What was observed about the protein that gradually built up but was rapidly degraded when cells divided?
- Its level peaked just before cell division (correct)
- Its level increased continuously during cell division
- It was not influenced by cell division
- It was stable throughout the cell cycle
What is the term used for the proteins that fluctuated in levels as cells progressed through divisions?
What is the term used for the proteins that fluctuated in levels as cells progressed through divisions?
- Hormones
- Cytokines
- Cyclins (correct)
- Enzymes
When does the level of cyclin fall according to the observations made in the experiment?
When does the level of cyclin fall according to the observations made in the experiment?
What was correlated with the peak of cyclin levels in the experiment?
What was correlated with the peak of cyclin levels in the experiment?
How many subunits were revealed in the biochemical purification of MPF?
How many subunits were revealed in the biochemical purification of MPF?
What is the regulatory subunit that activates the cyclin dependent kinase?
What is the regulatory subunit that activates the cyclin dependent kinase?
Which of the following phosphorylation events on the cyclin dependent kinase is inhibitory?
Which of the following phosphorylation events on the cyclin dependent kinase is inhibitory?
What is the role of the Cdc25 phosphatase in the cell cycle regulation?
What is the role of the Cdc25 phosphatase in the cell cycle regulation?
What is the function of the T-loop in the cyclin dependent kinase structure?
What is the function of the T-loop in the cyclin dependent kinase structure?
Which of the following is not a mechanism of regulation of the cyclin dependent kinase activity?
Which of the following is not a mechanism of regulation of the cyclin dependent kinase activity?
What is the relationship between the Cdc2 protein in fission yeast and the Cdc28 protein in budding yeast?
What is the relationship between the Cdc2 protein in fission yeast and the Cdc28 protein in budding yeast?
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