Unit 2 Cells and Transport Review

Front

What is a hypertonic solution?

Back

A hypertonic solution is one where the concentration of solute is greater outside the cell than inside, causing water to move out of the cell.

Front

What type of cell is characterized by the absence of a nucleus and membrane-bound organelles?

Back

Prokaryote.

Front

What is the primary characteristic of prokaryotic cells regarding their DNA?

Back

Prokaryotic cells have DNA that is not enclosed within a membrane.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of moving particles across a cell membrane through protein channels, following the concentration gradient.

Front

What role does cytoplasm play in a cell?

Back

Cytoplasm suspends organelles and provides an environment for chemical reactions within the cell.

Front

What is the difference between a hypertonic and hypotonic solution?

Back

A hypertonic solution has a higher concentration of solute compared to the inside of the cell, while a hypotonic solution has a lower concentration of solute.

Front

What is osmosis?

Back

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

Front

What are the main components of a prokaryotic cell?

Back

The main components of a prokaryotic cell include the cell membrane, cytoplasm, ribosomes, and genetic material (DNA).

Front

What is the function of protein channels in the cell membrane?

Back

Protein channels facilitate the transport of specific molecules across the cell membrane.

Front

What is the significance of the cell membrane's selective permeability?

Back

Selective permeability allows the cell to maintain homeostasis by controlling what enters and exits the cell.