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What correctly describes some aspect of protein secretion from prokaryotic cells?
Prokaryotic cells secrete proteins using the Sec-dependent pathway, where proteins are synthesized with a signal peptide that targets them to the Sec translocase for transport across the cytoplasmic membrane. Once in the periplasm, proteins can be further transported across the outer membrane via specialized secretion systems such as Type II or Type III secretion systems.
What is the route taken by mucin through the cell from its synthesis to its secretion list all organelles and processes involved?
Mucin is synthesized in the endoplasmic reticulum and Golgi apparatus. It is then packaged into vesicles in the Golgi and transported to the plasma membrane through the secretory pathway, involving vesicle budding, transport along microtubules, and fusion with the membrane for secretion. This process involves organelles such as the endoplasmic reticulum, Golgi apparatus, vesicles, and the plasma membrane.
What is merocrine secretion?
Merocrine secretion is a method of secretion in which secretory vesicles release their contents through exocytosis without the loss of cellular membrane. This process is common in glands that produce sweat, saliva, and digestive enzymes.
What is excytosis?
Exocytosis is a process by which cells release molecules outside of the cell. It involves the fusion of vesicles containing the molecules with the cell membrane, leading to the release of the vesicle contents into the extracellular space. This process is important for communication between cells and for the secretion of various substances such as hormones and neurotransmitters.
What is the process by which a vacuole fuses with the cell membrane and releases its contents out of the cell?
This process is known as exocytosis. It involves the fusion of the vacuole membrane with the cell membrane, allowing the contents of the vacuole to be released outside the cell. Exocytosis is an important cellular mechanism for secretion of molecules such as proteins, hormones, and neurotransmitters.
What is The process whereby a drug crosses a membrane into the blood stream is called?
Absorbtion
What is absorption in shapes v functions of the skin?
Sensation Heat Regulation Absorbtion Protection Excretion Secretion Vitamin D
How is the epithelium suited for the absorption of food substances?
they have partially permeable membrane which help in absorbtion
How is the small intestine adapted to digest food?
contraction of muscle with secretion of substance
What transporter in the luminal membrane results in secretion?
Na+ -H+ countertransport
How are cells adapted to its functions?
They have adapted to their job by developing a cell membrane to keep unwanted waste
What is a secretion vesicle?
there is no such thing as a secretion vesicle.although there is a secretory vesicle;Which is a membrane bound vesicle derived from the Golgi apparatus and containing material that is to be released from the cell.
What cell structure controls what enters and exits the cell?
The cell membrane is specially adapted, as it is selectively permeable.
Where does the secretion of lactase take place in your bodies?
epithelial intestinal cells, enzyme is attached to the plasma membrane of the microvilli
What correctly describes some aspect of protein secretion from prokaryotic cells?
Prokaryotic cells secrete proteins using the Sec-dependent pathway, where proteins are synthesized with a signal peptide that targets them to the Sec translocase for transport across the cytoplasmic membrane. Once in the periplasm, proteins can be further transported across the outer membrane via specialized secretion systems such as Type II or Type III secretion systems.
Will a Cell Membrane have bumps on it?
Yes, a cell membrane can have bumps on it known as microvilli. Microvilli are small, finger-like projections that increase the surface area of the cell membrane, allowing for more efficient absorption of nutrients or secretion of substances.
State the action of NSAIDS in peptic ulcer?
Prostaglandin (PGE2) and prostacyclin (PGI2) are cytoprotective of the GI mucus membrane. They decrease the acid secretion, promotes the secretion of protective mucus, and enhance mucosal blood flow. However, arachidonic acid, a membrane lipid requires cyclooxygenases (COX1) to synthesize prostaglandins, while NSAIDS inhibit the cyclooxygenases. In other words, NSAIDS inhibit COX1, which blocks the synthesis of prostaglandins, which disallows the decrease of acid secretion, decrease the secretion of protective mucus, and decrease mucosal blood flow, therefore, causing peptic ulcer, which is an imbalance in acid secretion and mucus protectant.
