Explain vesicle roles in moving cellular material and the contribution of clathrin to budding.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2025–2026.
A pancreatic secretory cell contains the structures labelled Y in the schematic. (i) Distinguish between Y and the corresponding structures inside a mitochondrion. (ii) State one other organelle involved in exporting the proteins produced at Y.
A membrane invagination develops a clathrin coat before becoming an intracellular vesicle. What is the role of this protein? A. It supplies a scaffold that helps the membrane curve into a budding vesicle B. It hydrolyses the vesicle cargo in an acidic lumen C.…
A mutation prevents clathrin from assembling at the cytoplasmic surface of a membrane. Which process is most directly affected? A. Pairing of bases during chromosome replication B. Translation of mitochondrial genes C. Budding of coated transport vesicles D.…
Explain why introducing the mRNA does not immediately alter water movement.
Clathrin assembles on the cytoplasmic surface of a patch of membrane. What does this coat contribute to vesicle formation? A. It forms a scaffold that helps curve the membrane into a bud B. It breaks all phospholipid tails into amino acids C. It pumps water…
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