Cell Movement

Which two parent processes move materials and substances through a cell membrane?

This process is necessary when an input of energy is required to move materials through a cell membrane.

Active transport involves the transportation of ______.

Active transport requires ______ to move materials through a cell membrane.

In active transport, the particle that is being moved into the cell membrane binds with the protein transporting it, and cellular energy is used to move the particle and "binded" protein through the cell membrane.

Once a particle is moved through a cell membrane using active transport, it is ______.

The movement of particles through a solution or gas from an area with a higher number of particles to an area with a lower number of particles is ______.

In active transport, energy is provided by the ______.

Active transport is used when something needs to move ______ the concentration gradient.

Adenosine triphosphate, or ATP, is the molecule that carries energy to the place where the energy is needed.

According to the concept of active transport, when a particle that needs to move in or out of a cell is too big to fit through the membrane, the cell needs to morph and potentially utilize which two processes?

______ occurs when something that is too large to move through the cell membrane needs to move in through the cell membrane.

A form of endocytosis used for solid particles.

In active transport, when a liquid is too big to move through the cell membrane, it uses a form of endocytosis called ______.

______ occurs when something that is too large to move through the cell membrane needs to move out through the cell membrane.

In order to receive energy, the cell wall has to let in food, oxygen, and other substances.

Then what has to let in food, oxygen, and other substances to give a cell energy?

Just as a cell has to accept food, oxygen, and other substances to receive energy, it has to release ______.

A cell does not need to accept harmful particles when accepting its sources of energy, so it must be ______.

The movement of substances through a cell membrane without the use of energy is called ______.

Osmosis moves substances through a cell membrane without the use of any energy.

The three types of passive transport are ______, ______, and ______.

Which explanation best describes the concept of diffusion?

Through the process of diffusion, molecules are seeking ______.

Diffusion can be explained when examining the human body's transfer of ______.

Other than diffusion, what are the other two forms of passive transport?

Do they require any energy?

Osmosis is the diffusion of water through a cell membrane and requires much energy to be performed.

Much like oxygen, water also needs to be ______ in a cellular context.

If there is less water outside the cell than inside the cell, water will move out of the cell.

If there is less water inside the cell than outside the cell, water will move out of the cell.

Water, oxygen, and carbon dioxide are all small enough to get into and out of cells without help and the transport of such molecules is a completely passive process.

Molecules like sugar are not small enough to get through a cell membrane on their own, but their movement through pathways called transport proteins is still a passive process.

Sugar moving through a cell membrane via transport protein pathways is an example of a passive process called facilitated diffusion, which moves larger molecules through a cell membrane without the use of mitochondria-derived energy.