____________ is a fundamental proposal in biology that contains the three principles:

1- All living things are made of one or more cells

2- Cells are the basic unit of structure/function of all life

3- Cells come from cells, and pass genetic information on to their daughter cells.

The boundary that controls what enters and leaves the cell is called the __________.

_______ is a property of the membrane by which it allows some substances to pass through the membrane and some it does not allow to pass through.

The plasma membrane is composed of a _____________________, in which two layers of phospholipids are arranged tail-to-tail, as shown in this picture.

Proteins that span the entire membrane and create a channel for solutes and molecules to move in and out of the cell are called _________________.

Specialized structures that carry out certain processes in cells are called ____________.

____________ cells contain a nucleus, and _____________ cells do NOT contain a nucleus.

A _____________ is a distinct central organelle that contains the cell's genetic material in the form of DNA.

The semi-fluid environment inside of the cell, which all of the organelles "float" in, is known as the __________________.

The ___________ is a network of long, thin protein fibers that form a framework of support for the cell.

The organelles that help make proteins are ___________.

Ribosomes are produced inside the ______________, which is found inside of the nucleus.

The _________________ is a membrane system of folded sacs and interconnected channels that serves as the for protein and lipid synthesis.

The _________________ is a flattened stack of membranes that modifies, sorts, and packages proteins.

A __________ is a sac used to store food, water, and other materials needed by the cell. (Hint: this organelle is larger in a plant cell than in an animal cell).

________ are vesicles that contain substances that digest waste, including old worn out organelles or food particles.

The organelle that generates the energy for the cell is the __________.

____________ are organelles that capture solar energy and convert it to chemical energy through a process called photosynthesis.

The _____________ is a thick and rigid mess of fibers that surrounds the plasma membrane and protects the cell. (HINT: Plant cells have this and animal cells don't)

___________ are short, hair-like organelles that aid in movement for the cell. See the picture.

__________ are long filaments that aid in movement of a cell. They are longer and less numerous than cilia. See the photo.

The net movement of particles from areas of high concentration to areas of low concentration is called ____________.

____________ is a process in which transport proteins move ions and other substances across the plasma membrane.

The diffusion of water across a selectively permeable membrane is _______________.

When water enters and leaves a cell at the same rate, it looks like this picture, and is called _______________.

When water leaves the cell at a higher rate than it comes in, and the concentration of solute is higher outside the cell than it is inside, the cell is called _________________, and looks like this picture.

When water comes into the cell at a higher rate than it leaves, and the concentration of solute is higher inside the cell than it is outside, the cell is ________________, and looks like this photo.

The movement of particles across a concentration gradient requires energy; therefore it is called __________________.

___________ is the process by which a cell surrounds a substance outside of the environment, enclosing it in the membrane.

____________ is a secretion of materials at the plasma membrane.