Question

1)

The "cytosol" of a eukaryotic cell is different from its "cytoplasm" because ____________________.

		cytoplasm includes the organelles and cytosol does not
		cytosol includes the organelles and cytoplasm does not
		cytosol includes most of the components of the endomembrane system and cytoplasm does not
		cytosol includes the cytoskeleton and cytoplasm does not

2)

Chaperone proteins ____________________.

		force certain parts of polypeptides to form domains
		facilitate correct polypeptide folding by permitting some interactions and blocking others
		determine the tertiary structure that a polypeptide will form
		are found in cytosol of all cells but not in the organelles of eukaryotic cells

3)

Beta barrel" structures are found in some membrane proteins that transport polar solutes. The beta barrel ____________________.

		is a beta sheet formed into a cylinder that is nonpolar on both its exterior and interior faces
		is a beta sheet formed into a cylinder that is polar on both its exterior and interior faces
		is a beta sheet that is twisted back on itself to form an alpha helix
		is a beta sheet formed into a cylinder that is nonpolar on its exterior face and polar on its interior face

Answer 1

Answer 1:
option - Cytoplasm includes the organelles and cytosol does not

The cytoplasm is made up of the cytosol along with the organelles like ribosomes and mitochondria, etc.

Answer 2:
Option - Facilitate correct polypeptide folding by permitting some interactions and blocking others

These proteins assist in conformational folding and unfolding of proteins. They also play a role in assembly or disassembly of other macromolecule structures.

Answer 3:
The given options are incorrect.
The correct answer - is a beta sheet formed into a cylinder that is polar on its exterior face and nonpolar on its interior face

These proteins are made up of alternating polar and non polar amino acids in such a way that non polar entities are in the interior of the cylindrical barrel and are hydrophobic. The exterior is made up of hydrophilic or polar entities.