Exposure of Zebrafish Nuclei to Meiotic Cytosol Resulted in Phosphorylation

question 40

Multiple Choice

Exposure of zebrafish nuclei to meiotic cytosol resulted in phosphorylation of NEP55 and L68 proteins by cyclin-dependent kinase 2. NEP55 is a protein of the inner nuclear membrane, and L68 is a protein of the nuclear lamina. What is the most likely role of phosphorylation of these proteins in the process of mitosis?

• A) They enable the attachment of the spindle microtubules to kinetochore regions of the centromere.
• B) They are involved in the disassembly and dispersal of the nucleolus.
• C) They are involved in the disassembly of the nuclear envelope.
• D) They assist in the movement of the centrosomes to opposite sides of the nucleus.

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Definitions:

Stress Toloration

Referring to an individual's capability to endure stress without succumbing to negative outcomes.

Negative Affectivity

A personality trait involving the experience of negative emotions and poor self-concept; individuals with high levels of this trait are more prone to experience a range of negative moods and views.

Work Environment

The physical and psychological conditions under which employees operate, including everything from office layout to social climate.

Negative Affectivity

Describes a personality dimension that encompasses a variety of negative emotions, such as sadness, anxiety, and anger.