INTRODUCTION TO THE CELL
They are often called the microscopic building blocks of the body.
CELLS
They also contain the body’s hereditary material in the form of this and make copies of themselves.
DNA
Each living cell carries out the tasks of taking food, transforming food into energy, getting rid of wastes, and this other function.
reproducing
Many of these are embedded in the membrane but stick out on both sides.
proteins
It is a sphere that contains another sphere called a nucleolus
The nucleus
Cells are active and dynamic, they continually grow and specialize, function, die, and replenish themselves, at this rate every second.
by the millions
It is the basic functional unit of the human body.
The cell
Most of our body cells have these three main parts.
• Cell outer Membrane • Cytoskeleton • The nucleus
Some of these proteins are called like this because they bind to signal molecules
receptors
It’s function: - the storage center of this.
the cell’s DNA
The whole body contains about this amount of cells.
37.2 trillion
Cells are extremely small, typically only about this size.
0.01 millimeter
It is a double layer of lipids and proteins that surrounds a cell and separates the cytoplasm (the liquid contents of the cell) from its surrounding environment.
The cell membrane
Others proteins are called like this because they are the only means of allowing ions into or out of the cell.
ion channels
As mentioned, there are 226 types of these in your body - some can form sheets like those in your skin or lining your mouth, while others can store or generate energy, such as fat and muscle cells.
Body cells
There are this different kinds of cells.
226
Even our largest cells are no bigger than the width of a this.
a human hair
The cell membrane only lets certain molecules enter and exit and it controls the amount of some substances that go into or out of the cell, which can be defined as this characteristic.
It is selectively permeable
Protein with carbohydrate attached.
Glycoprotein
All cells have an outer membrane, a control center called a nucleus that contains our DNA, and tiny powerhouses called like this.
mitochondria
Cells provide structure for the body, take in nutrients from food, convert those nutrients into this, and carry out specialized functions.
energy
This is the measurement unit used to measure cells.
micrometer = μm
It also contains many different proteins which make up about half of its surface.
The cell membrane
Lipid with carbohydrate attached.
Glycolipid
The Nucleus of each cell contains DNA, which is the abbreviation of this substance, which directs the activity of the cell.
deoxyribonucleic acid