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Chapter 12 beckers world of the cell

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Chapter 12 beckers world of the cellChapter 12 beckers world of the cellChapter 12 beckers world of the cellChapter 12 beckers world of the cellChapter 12 beckers world of the cellChapter 12 beckers world of the cellChapter 12 beckers world of the cellChapter 12 beckers world of the cellChapter 12 ...

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  • August 28, 2024
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  • 2024/2025
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Chapter 12 beckers world of the cell
Adaptor proteins are sometimes called assembly proteins, what do they need - ANSWER-They take
energy ATP or GTP for binding of complexes to the membrane

Complexes traveling by transport vesicles to a different region of the plasma membrane - ANSWER-
transcytosis

COPI - ANSWER-involved in retrograde transport from the golgi back to the ER

COPII - ANSWER-anterograde transport from the ER to the Golgi

Core oligosaccharides commonly have what? - ANSWER-two units of N-acetylglucosamine, nine
mannose units, and three glucose units

Drug detoxification involves - ANSWER-Hydroxylation

Endocytosis - ANSWER-Cell eats external materials

Endoplasmic Reticulum - ANSWER-A continuous network of flattened sacs, tubules, and vesicles

ER Cisternae - ANSWER-membrane bound sacs in ER

ER Lumen - ANSWER-space inside the cisternae

Exocytosis - ANSWER-vesicular transport or secretory vesicles release contents outside of cell

How are phospholipids transferred? - ANSWER-by phospholipid translocators (flippases)

How do proteins and lipids leave the Golgi complex? - ANSWER-Transport vesicles from the trans-
golgi network

How do proteins know where to go? - ANSWER-Each protein has a tag for a specific vesicle

How do steroids differ? - ANSWER-Number of carbon chains and hydroxyl groups

How is hydroxylation catalyzed - ANSWER-by cytochrome-P450 (for drug detoxification)

How phospholipids move from the ER to other organelles? - ANSWER-By phospholipid exchange
proteins

NSF and SNAPs - ANSWER-release of the snares of the donor and target membranes

phagocytosis - ANSWER-cellular eating of large particles

pinocytosis - ANSWER-cellular drinking

Rough ER is the site for - ANSWER-Initial steps of glycoproteins, folding of polypeptides, recognition
and removal of misfoled protiens, and assembly of multimeric protein complexes

SNARE hypothesis - ANSWER-the sorting and targeting of vesicles involves two families of SNARE
proteins (SNAP receptor)

Target-SNAP receptors are found on - ANSWER-target membranes

Types of ligand-receptor complexes traveling - ANSWER--complexes carried to a lysosome for
degradation

-complexes are carried to the TGN where they enter a variety of pathways

-complexes can also travel by transport vesicles to a different region of the plasma membrane

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