Lysosomes

Details

1-About lysosomes, it is incorrect to say that:

Choose an option:

a)In their membranes they have H + pumps responsible for the acidic pH inside these organelles.

b)The permeases present in the lysosomal membranes are involved in the transport of molecules originated from the digestion process, such as amino acids and sugars, to the cytosol.

c)They can degrade damaged or aged cell organelles.

d)They have oxidase enzymes that degrade various biological polymers, such as proteins, nucleic acids.

2-

Lissosomal enzymes can undergo the following processes in the Golgi complex:

Choose one or more:

I-Connection with specific receivers present in the trans network.

II-Sulfation that leads to the addition of the sulfate group.

III-Packing in vesicles coated with COPI proteins.

IV-Phosphorylation that leads to the formation of mannose-6-phosphate in its glycidic portion.

3-

During the formation, processing and transport of lysosomal enzymes, the following processes occur:

Choose one or more:

I-Sulfation in the Golgi complex.

II-Formation of the mannose group -6-P in the Golgi complex.

III-Insertion of enzymes in the rough endoplasmic reticulum membrane.

IV-O-linked glycosylation.

V-N-linked glycosylation.

VI-Packing in clathrin-coated vesicles in the Golgi trans network.

VII-Folding by chaperones in the rough endoplasmic reticulum.

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