Podcast
Questions and Answers
Where are lipids synthesized within a cell?
Where are lipids synthesized within a cell?
- Cytosol
- Smooth endoplasmic reticulum (correct)
- Rough endoplasmic reticulum
- Golgi apparatus
What initiates the synthesis of proteins in cells?
What initiates the synthesis of proteins in cells?
- Cytosolic ribosomes (correct)
- Nuclear ribosomes
- Ribosomes attached to the Golgi apparatus
- Mitochondrial ribosomes
What happens to the synthesis of transmembrane proteins after their signal sequence directs the ribosome to the ER?
What happens to the synthesis of transmembrane proteins after their signal sequence directs the ribosome to the ER?
- Translation continues in the cytosol
- Translation stops completely
- Translation resumes in the mitochondria
- Translation continues and the protein is inserted into the membrane of the ER (correct)
What characterizes proteins synthesized in cytosolic ribosomes?
What characterizes proteins synthesized in cytosolic ribosomes?
Which of the following is true regarding the synthesis of membrane proteins?
Which of the following is true regarding the synthesis of membrane proteins?
Flashcards
Lipid synthesis location
Lipid synthesis location
Lipids are synthesized in the smooth endoplasmic reticulum (SER).
Protein synthesis start location
Protein synthesis start location
All protein synthesis begins in cytosolic ribosomes.
Cytosolic proteins' ultimate location
Cytosolic proteins' ultimate location
Cytosolic proteins remain in the cytosol after synthesis.
Transmembrane protein insertion
Transmembrane protein insertion
Signup and view all the flashcards
RER formation
RER formation
Signup and view all the flashcards
Study Notes
Membrane Component Synthesis
- Lipids and proteins are synthesized in the endoplasmic reticulum (ER).
- Lipids are synthesized in the smooth endoplasmic reticulum (SER) and inserted into the membrane.
- All protein synthesis begins in cytosolic ribosomes.
- Cytosolic proteins are completed and remain in the cytosol.
Transmembrane Proteins
- Transmembrane proteins carry a signal sequence.
- The signal sequence halts translation and directs the ribosome to dock with the ER, forming RER.
- Translation continues after docking, and the protein is inserted into the ER membrane.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
