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Active transport always requires transport proteins during the process?
false
Is the flexible nature of a cell membrane results from its channel proteins true?
Yes, the flexible nature of a cell membrane results from its phospholipid bilayer, which allows for movement and bending. Channel proteins, on the other hand, facilitate the transport of specific molecules across the membrane but do not contribute significantly to the overall flexibility of the membrane.
Is it true that the transport proteins span the cell membrane allowing the selectively permeable membrane to regulate which molecules enter an leave the cell?
false
True or false active transport always requires transport proteins during the process?
true
How does prokaryotic cells secrete proteins?
Prokaryotic cells secrete proteins through a process called translocation. Proteins are synthesized in the cytoplasm and then moved across the cell membrane through protein channels or transport systems. Once outside the cell, the proteins can carry out various functions in the surrounding environment.
How a particular molecule crosses the membrane depends in part on the molecule's size true or false?
True. The size of a molecule can impact its ability to cross the membrane. Smaller molecules can pass through the membrane more easily through diffusion, while larger molecules may require specific transport proteins or channels to facilitate their passage.
Proteins form the nonactive matrix of the plasma membrane?
Proteins are actually vital components of the plasma membrane that are involved in various functions such as transport, cell recognition, and cell signaling. They are not considered part of the nonactive matrix of the plasma membrane. Lipids make up the majority of the membrane structure, determining its fluidity and stability.
Many membrane proteins are made by the Smooth endoplasmic reticulum true or false?
true
The cell mechanism of active transport involves the transport of insoluble chemicals across the membrane with protein acting as the carrier?
Active transport is a cell mechanism that requires energy in the form of ATP to move molecules against their concentration gradient, from an area of low concentration to high concentration. Carrier proteins embedded in the cell membrane bind to the specific molecules and use energy to move them across the membrane.
Protein in the plasma membrane not so?
Proteins in the plasma membrane play essential roles in cell adhesion, signaling, and transport. They help regulate the passage of molecules in and out of the cell and serve as receptors for various signaling molecules. Overall, proteins in the plasma membrane are crucial for maintaining cell structure and function.
Do the Golgi apparatus play an important role in the modification and transportation of proteins true or false?
True. The Golgi apparatus is an important organelle responsible for modifying, sorting, and packaging proteins into vesicles for transport to their final destination within the cell or outside of the cell. It is involved in post-translational modifications, such as glycosylation, that are crucial for the functionality of many proteins.
Having defective proteins in the cell membrane can cause disease?
True
