Cells (transport and osmosis) EOC Review 1

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What is a eukaryotic cell?

Back

A eukaryotic cell is a type of cell that has a nucleus and membrane-bound organelles, such as ribosomes and the plasma membrane. Examples include plant and animal cells.

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What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows charged molecules (ions) and large molecules to cross the plasma membrane through channel proteins without the use of energy.

Front

What is the main difference between prokaryotic and eukaryotic cells?

Back

The main difference is that eukaryotic cells have a nucleus and membrane-bound organelles, while prokaryotic cells do not.

Front

What is the role of ribosomes in a cell?

Back

Ribosomes are responsible for protein synthesis in the cell, translating messenger RNA (mRNA) into polypeptide chains.

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What is osmosis?

Back

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

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What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).

Front

What is the plasma membrane?

Back

The plasma membrane is a biological membrane that separates and protects the interior of all cells from the outside environment, composed of a phospholipid bilayer.

Front

What is the optimum pH for enzyme activity?

Back

The optimum pH is the pH at which an enzyme is most active and efficient. For many enzymes, this is around neutral pH (6-8), but it can vary.

Front

What is the function of channel proteins?

Back

Channel proteins facilitate the transport of specific substances across a cell membrane, allowing ions and larger molecules to pass through.

Front

What is the significance of the nucleus in eukaryotic cells?

Back

The nucleus houses the cell's genetic material (DNA) and is responsible for regulating gene expression and cell division.