Cells, Cell Transport Review

Front

What is facilitated diffusion?

Back

A type of passive transport that uses transport proteins to move substances like glucose across the cell membrane without using energy.

Front

What is the function of lysosomes?

Back

Lysosomes contain digestive enzymes that break down worn-out parts of the cell and help in waste disposal.

Front

What do prokaryotes lack?

Back

Prokaryotes do not have membrane-bound organelles.

Front

Describe the structure of the phospholipid bilayer.

Back

The phospholipid bilayer consists of hydrophobic tails and hydrophilic heads, allowing it to form a barrier in cell membranes.

Front

What is the role of the Golgi body?

Back

The Golgi body packages and distributes proteins, and proteins may be modified here.

Front

What is osmosis?

Back

Osmosis is the passive transport of water molecules across a selectively permeable membrane.

Front

Define diffusion.

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What are membrane-bound organelles?

Back

Organelles that are enclosed by membranes, such as the nucleus, mitochondria, and endoplasmic reticulum.

Front

What is the cell membrane's primary function?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis.

Front

Explain the difference between active and passive transport.

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.