Membrane Structure and Function
The mesosomes may be the sites of

RNA replications and specialized cyclic reactions
RNA replications and specialized enzymatic reactions
None of these
DNA replication and specialized enzymatic reactions

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Membrane Structure and Function
The membrane proteins that catalyze active transport reactions differ from soluble enzymes as

the products of the reaction move in a specific direction
the substrates of the reaction are all outside the cell
they do not enhance the rates of reaction
they are permanently changed during the reaction

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Membrane Structure and Function
In Fluid mosaic model, the biological membrane can be viewed as

three dimensional solutions of oriented lipids and globular proteins
three dimensional solutions of oriented lipids and carbohydrate
two dimensional solutions of oriented lipids and carbohydrate
two dimensional solutions of oriented lipids and globular proteins

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Membrane Structure and Function
Exocytosis is the secretion of proteins

is the uptake of macromolecules from the extracellular space into the cell across the plasma membrane
out of the cell across the plasma membrane into the extracellular space
out of the cell across the plasma membrane into the intracellular space
is the uptake of macromolecules from the intracellular space into the cell across the plasma membrane

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