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Questions and Answers
Which of the following is a correct statement about signal transduction?
Which of the following is a correct statement about signal transduction?
- Hydrophilic ligands never enter the receiving cells.
- Down regulation of insulin’s impacts is most typically accomplished by catabolizing its receptors. (correct)
- A regularly used method to decrease DNA transcription would be to endocytose the receptors.
- All lipophilic ligands utilize plasma binding proteins.
Which process do cells use to remove integral proteins from the plasma membrane?
Which process do cells use to remove integral proteins from the plasma membrane?
- Endocytosis (correct)
- Pinocytosis
- Phagocytosis
- Exocytosis
What happens to the cell if the process of integral protein removal happens more than once?
What happens to the cell if the process of integral protein removal happens more than once?
- The cell becomes more active
- The cell becomes bigger (correct)
- The cell becomes less active
- The cell becomes smaller
Which of the following is NOT a correct statement about signal transduction?
Which of the following is NOT a correct statement about signal transduction?
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Which method is commonly used to decrease DNA transcription?
Which method is commonly used to decrease DNA transcription?
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Study Notes
Signal Transduction
- Signal transduction is a process by which cells receive and respond to signals from their environment.
- Cells use signal transduction to communicate with each other and to regulate their own behavior.
- Signal transduction pathways can be activated by a variety of stimuli, including hormones, neurotransmitters, growth factors, and light.
Integral Protein Removal
- Endocytosis is the process cells use to remove integral proteins from the plasma membrane.
- During endocytosis, a portion of the plasma membrane invaginates and pinches off to form a vesicle that encloses the integral protein.
Repeated Integral Protein Removal
- Repeated removal of integral proteins from the plasma membrane can lead to depletion of the membrane, potentially affecting cell function and integrity.
- Without sufficient integral proteins, the cell may struggle to maintain its structure and perform essential processes.
Incorrect Statements about Signal Transduction
- There are no incorrect statements provided in the question prompt.
DNA Transcription Inhibition
- Transcription factors are commonly used to decrease DNA transcription.
- Transcription factors can bind to specific DNA sequences and prevent the binding of RNA polymerase, thereby inhibiting the synthesis of mRNA.
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