true or false questions: 1) intermediate filaments include proteins in the vimentin family ? 2) centromeres...

true or false questions:

1) intermediate filaments include proteins in the vimentin family ?

2) centromeres are where the microtubules polymerize in a cell ?

3) chaperones allow correct folding of a protein in the peroxisome‘s before moving to the Golgi?

Expert Solution

1. Answer: True

The name of intermediate filaments is so because its diameter is in between that of microtubules and microfilaments. They are composed various proteins and are diverse in the cell. Among the various examples of intermediate filaments like desmin and neurofilaments, vimentin is also a type of intermediate filament. Vimentin plays the role of supporting and anchoring organelles in cytosol.

2. Answer: True

The centrosome is conains two centrioles perpendicular to each other. It acts as the main microtubule organizing centre (MTOC). It is the site at which cilia and flagella are organized and the spindle networks are established. All these happen by polymerisation of microtubules at the centrosomes.

3. Answer: True

Peroxisomes are organelles found in most eukaryotic cells. In the peroxisomes, the chaperone proteins help the proteins to attain their native functional folded states before they move to the Golgo for post-translational modifications (if any) and transport.

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gladiator answered 2 years ago

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