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What are specialized proteins that both regulate the cell cycle and cause it to occur?
Proteins called internal regulators and external regulators control the cell cycle. Internal regulatory proteins allow the cell cycle to proceed only when certain events have occurred in the cell itself. External regulatory proteins direct cells to speed up or slow down the cell cycle.
What is the cell structure that is located in the external boundaries of the cell?
The cell structure that is located in the external boundaries of the cell is the cell membrane. The cell membrane is a semipermeable membrane composed of lipids and proteins that surrounds the cell, providing a barrier between the cell's interior and its external environment.
Integral proteins in the plasma membrane?
Integral proteins are embedded within the plasma membrane and span its entire width, serving as channels for the transport of molecules across the membrane. These proteins are essential for cell signaling, cell recognition, and maintaining cell shape and structure. They also play a crucial role in cell adhesion and communication with the external environment.
Describe two important processes carried out by proteins?
Proteins play a crucial role in enzyme catalysis, facilitating biochemical reactions by lowering activation energy. Additionally, proteins are essential in cell signaling, allowing cells to communicate with each other and respond to external stimuli.
Why are cellular proteins including enzymes not produced at the same time?
Cellular proteins, including enzymes, are produced at different times due to the regulation of gene expression. Gene expression is tightly controlled in response to internal and external signals to ensure that proteins are produced when they are needed. This allows the cell to respond dynamically to changes in its environment and metabolic needs.
What are the external proteins used for attachment called?
the answer is fimbriae -shannon
Which component of the HPV vaccine stimulates the production of antibodies?
The external viral proteins of the HPV vaccine.
What different roles and functions do membrane proteins serve?
Membrane proteins relay signals between the cell's internal and external environments. They transport proteins and move molecules and ions across the membrane. They have many activities such as oxidoreductase, hydrolase or transferase.
What are specialized proteins that both regulate the cell cycle and cause it to occur?
Proteins called internal regulators and external regulators control the cell cycle. Internal regulatory proteins allow the cell cycle to proceed only when certain events have occurred in the cell itself. External regulatory proteins direct cells to speed up or slow down the cell cycle.
Large relay proteins to which several other relay proteins are simultaneously attached?
Scaffold proteins often serve this function by providing structural support and organization for signaling pathways. They can simultaneously bind multiple relay proteins to facilitate efficient signal transduction within the cell. This arrangement helps to coordinate and amplify cellular responses to external stimuli.
What is the cell structure that is located in the external boundaries of the cell?
The cell structure that is located in the external boundaries of the cell is the cell membrane. The cell membrane is a semipermeable membrane composed of lipids and proteins that surrounds the cell, providing a barrier between the cell's interior and its external environment.
Integral proteins in the plasma membrane?
Integral proteins are embedded within the plasma membrane and span its entire width, serving as channels for the transport of molecules across the membrane. These proteins are essential for cell signaling, cell recognition, and maintaining cell shape and structure. They also play a crucial role in cell adhesion and communication with the external environment.
What molecules are processed by the rough endoplasmic?
The rough endoplasmic reticulum acts as an assembly line where workers (ribosomes) make proteins. This area is where proteins are assembled for internal and external use.
Describe two important processes carried out by proteins?
Proteins play a crucial role in enzyme catalysis, facilitating biochemical reactions by lowering activation energy. Additionally, proteins are essential in cell signaling, allowing cells to communicate with each other and respond to external stimuli.
What are external regulators?
External regulators are proteins that respond to events outside the cell. These proteins direct cells to speed up or slow down the cell cycle, like traffic lights. For example, growth factors are one of the most important external regulators, and they stimulate the growth and division of cells. These differ from internal regulators in the fact that they respond to events inside the cell. Internal regulators allow the cell to proceed only when certain processes have happened inside the cell. Hope this helps! : )
Why are cellular proteins including enzymes not produced at the same time?
Cellular proteins, including enzymes, are produced at different times due to the regulation of gene expression. Gene expression is tightly controlled in response to internal and external signals to ensure that proteins are produced when they are needed. This allows the cell to respond dynamically to changes in its environment and metabolic needs.
What recognizes and binds to substances outside the cell?
Cell surface receptors recognize and bind to substances outside the cell. These receptors are usually proteins located on the cell membrane and play a crucial role in mediating communication between the cell and its external environment.
