Which chemical is crucial for the functioning of motor proteins during mitosis?

Which chemical is crucial for the functioning of motor proteins during mitosis?

• A. NADH
• B. ATP
• C. FADH2
• D. GDP

Answer: (B)

ATP is crucial for the functioning of motor proteins during mitosis because it provides the necessary energy required for various processes involved in cell division. Motor proteins, such as kinesins and dyneins, are responsible for moving structures within cells, including the separation of chromosomes during mitosis. These proteins convert the chemical energy stored in ATP into mechanical work. During mitosis, ATP hydrolysis drives the conformational changes in motor proteins that allow them to "walk" along microtubules, transporting cellular components and facilitating the separation of sister chromatids. Without ATP, these motor proteins would not be able to function effectively, leading to errors in chromosome segregation and potentially resulting in cell division failures. In contrast, the other options do not play a direct role in powering motor proteins during mitosis. NADH and FADH2 are involved in metabolic processes and electron transport for ATP production but are not directly utilized by motor proteins. GDP is associated with the function of G proteins in signaling pathways, which is also not directly related to the mechanical actions of motor proteins during cell division.

ATP is crucial for the functioning of motor proteins during mitosis because it provides the necessary energy required for various processes involved in cell division. Motor proteins, such as kinesins and dyneins, are responsible for moving structures within cells, including the separation of chromosomes during mitosis. These proteins convert the chemical energy stored in ATP into mechanical work.

During mitosis, ATP hydrolysis drives the conformational changes in motor proteins that allow them to "walk" along microtubules, transporting cellular components and facilitating the separation of sister chromatids. Without ATP, these motor proteins would not be able to function effectively, leading to errors in chromosome segregation and potentially resulting in cell division failures.

In contrast, the other options do not play a direct role in powering motor proteins during mitosis. NADH and FADH2 are involved in metabolic processes and electron transport for ATP production but are not directly utilized by motor proteins. GDP is associated with the function of G proteins in signaling pathways, which is also not directly related to the mechanical actions of motor proteins during cell division.