GR. 1 Flashcards
It lacks ribosomes and is responsible for the synthesis of steroid hormones in
endocrine cells.
smooth endoplasmic reticulum
It is a type of ribosome destined to remain in the cytosol (e.g. enzymes of glycolysis, cytoskeletal proteins).
free ribosomes
This was proposed by Günter Blobel and collaborators in the early 1970s, which explains how proteins are directed to the ER for synthesis.
Signal Hypothesis
If the corrective measures for the destruction of misfolded proteins are not successful, the cell will proceed to this pathway.
Cell Death Pathway
this view of material movement in Golgi proposes that cisternae form at the cis face and mature as they move toward the trans face.
Cisternal Maturation Model
It is the type of coated vesicle that moves materials from ER to Golgi complex.
COPII-Coated Vesicles
It is the type of vesicle transport where fusion of a vesicle with the plasma membrane releases
its contents to the extracellular environment.
A. Exocytosis
Lysosomes play an important role in this process of breaking down and replacing damaged organelles like mitochondria.
D. Autophagy
I-cell disease is caused by deficiency of what enzyme?
B. N-acetylglucosamine phosphotransferase
What percentage of plant cell volume does the central vacuole typically occupy?
C. 90%
It is the process where cells “eat” large particles like bacteria and dead cells.
D. Phagocytosis
These are very simple organelles having only two sub-compartments (the boundary membrane
and the internal matrix), in which an imported protein can be placed.
A. Peroxisomes
(1-5) Enumerate the organelles that make up the endomembrane system.
- Endoplasmic Reticulum
- Golgi Complex
- Endosomes
- Lysosomes
- Vacuoles
(6-8) Give at least three approaches to the study of endomembranes.
- Autoradiography
- Green Fluorescent Protein (GFP)
- Biochemical Analysis of Subcellular Fractions
