BIOL 225 Lecture Notes - Lecture 23: Lysosome, Peroxisome, Drug Detoxification

18 views5 pages

sapphiremanatee269

5 Feb 2021

School

University of Victoria

Department

Biology

Course

BIOL 225

Professor

Briant Douglas

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

They are synthesized by the ribosomes that are attached to the er. For secreted proteins, most proteins synthesis happens in this compartment. Ribosomes that are associated with rough endoplasmic reticulum. The n-linked glysocosyl groups are always? the same 14 carbon sugar molecule. Most proteins made in rough er are _________. Anterograde movement movement of a vesicle from er through golgi towards the plasma membrane. Flow of vesicles from golgi back to the er. T or f: the integrity of membrane is never compromised. Dyneins motor proteins that move towards the minus end. Motor proteins that move towards the plus end. Ph of a vesicle is lower than that of the cytosol. Yes, they do; despite the fact that the ultimate cell fate of all the endocytosed molecules may be different, they all enter the same endosomal compartment. pinocytosis. Cell sipping non-specific; examples of pinocytosis rates: macrophages ingest 3% of their plasma membrane / min; fibroblasts 1% / min.

Related Questions

Which of the following statements about secreted proteins is/are correct? Choose all that apply. Which of the following statements about secreted proteins is/are correct? Choose all that apply.

Secreted proteins travel directly from the rough endoplasmic reticulum into the trans face of the Golgi apparatus.

Secreted proteins are likely to have received N-linked glycosylation in the rough ER.

Secreted proteins are the only proteins that receive sugar modifications in the Golgi.

Secreted proteins that are constitutively expressed are exported as they are prepared, as opposed to being released as a response to a signal.

Secreted proteins are synthesized on membrane-bound ribosomes, not free cytosolic ribosomes.

sangriacat694

29 Most proteins destined to enter the endoplasmic reticulum _________.

(a) are transported across the membrane after their synthesis is complete.

(b) are synthesized on free ribosomes in the cytosol.

(d) are keep binding to Signal recognition particle (SRP) while they are translated.

30 Which of the following choices reflects the appropriate order of locations through which a protein destined for the plasma membrane travels?

(a) lysosome â endosome â plasma membrane

(b) ER â lysosome â plasma membrane

(d) ER â Golgi â plasma membrane

31 Which of the following statements about vesicle budding from the Golgi is false?

(a) COPII can initiate vesicle budding on Golgi membrane.

(b) Some vesicles budded from Golgi membranes move towards ER.

(d) Clathrin molecules act at the cytosolic surface of the Golgi membrane.

32 Which of the following statements is false?

(a) The signal sequences on mitochondrial proteins are first bound to translocator on outer membrane after translation.

(b) Most mitochondrial proteins are not imported from the cytosol but are synthesized inside the mitochondria.

(c) Chaperone proteins in the mitochondria facilitate the movement of proteins across the outer and inner mitochondrial membranes.

(d) Mitochondrial proteins cross the membrane in their unfolded state.

orangeplatypus673

1A. Which of the following statements about the endomembrane system is/are correct? (select all that apply)

A.	Secreted proteins are inserted into the ER as they are being made by ribosomes.
B.	the nucleus is surrounded by two phospholipid bilayers.
C.	"Free" ribosomes attach to the endoplasmic reticulum.
D.	Secreted proteins are moved from the ER to the Golgi by ribosomes

1B. Place these components of the endomembrane system into the correct order in respect to when they first function in the production of a secreted protein.

	Endoplasmic Recticulum (ER)
	Riibosome
	Nucleus
	Transport Vesicle
	Cell Membrane
	Golgi Apparatus

lilacgnat89

BIOL 225 Lecture Notes - Lecture 23: Lysosome, Peroxisome, Drug Detoxification

Document Summary

Get access

Related Documents

BSC 300 Lecture Notes - Lecture 17: Unfolded Protein Response, Ern1, Pyrophosphate

BIOL 1090 Lecture Notes - Lecture 19: Transmembrane Protein, Endomembrane System, Lysosome

BSC 300 Lecture Notes - Lecture 7: Secretion, Cell Membrane, Signal Peptide

Related Questions