THE CELL

Folds

________ are made in the inner membrane to enhance the surface area available for energy release.

short branches

Each cell has what are called dendrites, which are ________, and an axon, which is a long "wire ..

Dendrites

________ are responsible for receiving nerve impulses.

cells

Certain ________ in the body have specialized structures that protrude from their surface.

lipid droplets

Adipocytes, which are the primary kind of adipose cell, are large and packed to the brim with ________, which are responsible for the storage of energy.

regular intervals

The phospholipids are arranged in a pattern that is broken up at ________ by protein molecules and chains of carbohydrates.

movement of materials

There are three different processes that can be responsible for the ________ through the cell membrane.

Phospholipid molecules

________ form a double layer that serves as the fundamental structural element of this membrane.

Organelles

________ are the structures that may be found within a cell; each ________ has its own unique size, shape, and function.

succession of ER

In most cases, a single continuous labyrinthine space is enclosed by a(n) ________ membranes that are heavily folded and curled.

smooth muscle

The enormous, spindle- shaped cells that make up ________ contract by sliding strands of protein along the interior of the cell.

sperm

Each ________ has a head that is responsible for transporting the genetic material of the father, and a whip- like tail that is used for movement.

particular molecule

After changing its shape and releasing the molecule into the cell, a carrier protein first connects with a(n) ________ that is located outside of the cell.

human sperm

The ________ are the only cells in the human body that have a lengthy flagellum that looks like a whip and is employed for propulsion.

human sperm cell

The ________ has a slender tail, known as a flagellum, that extends from it.

Neurons

(nerve cells) and muscle fiber cells (myofibers) are two examples of highly specialized cells that can grow to be more than 30 centimeters (more than 12 inches) in length. 

Organelles

are the structures that may be found within a cell; each organelle has its own unique size, shape, and function.

interior

The _ of the cell is very well organized, with compartments that are connected to one another by sheets and membranes. 

skeleton

These compartments are held in place by a flexible "_" that is made up of even smaller tubules and filaments.

starter

Stem cells are "_" cells that are not specialized but have the potential to develop into specialized cells. 

Stem cells

in an embryo have the potential to differentiate into any of the body's more than 200 different types of specialized cells

**Epithelial cells**

These cells are responsible for the formation of skin, as well as the covering of most organs and the lining of hollow cavities, such as the digestive tract.

**Photoreceptor cell**

In the retina of the eye is a type of cell that is sensitive to both light and color called a cone cell.

red cell

also known as an erythrocyte, is essentially a sack filled with oxygen-carrying hemoglobin molecules.

Adipocytes

which are the primary kind of adipose cell, are large and packed to the brim with lipid droplets, which are responsible for the storage of energy.

**Smooth muscle cell**

The enormous, spindle-shaped cells that make up smooth muscle contract by sliding strands of protein along the interior of the cell.

**Nerve cell**

Each cell has what are called dendrites, which are short branches, and an axon, which is a long "wire."

**Sperm cell**

Each sperm has a head that is responsible for transporting the genetic material of the father, and a whip-like tail that is used for movement.

**Ovum (egg) cell**

These enormous cells hold the genetic material from the mother as well as the energy supplies necessary for the embryo to begin its first cell divisions.