Cells New Learning

There are cells all around us. Anything that is living or is alive cells are present in. In biology a cell is the smallest unit that can preform all life process. There are many different types of cells, such as, Euglena, Blood, Yeast, and Bacteria cells.

Cells are extremely small. Most of them are too small to see without a microscope. It would take 50 human cells to cover the dot on this letter i.

All cells are surrounded by a cell membrane a cell membrane is a protective layer that covers the cells surface. It also acts as a barrier.

Cells also have organelles that carry out various life processes.  Organelles are structures that are to perform different functions.

All cells contain DNA at some point in there life. DNA is the deoxyribonucleic acid.

In some cells, the DNA is enclosed inside an organelle called the nucleus. For example human cells have a nucleus, but bacterial cells do not.

All cells have cell membranes, organelles, cytoplasm, and DNA. There are two basic cells, that have a nucleus, and do not. The cells without a nucleus are Prokaryotic and the ones with a nucleus are Eukaryotic. The most common Prokarytes are bacteria. Bacteria are the smallest out of all the cells known. The bacteria organisms are everywhere.

The second kind of prokaryote are the archaea. They are similar to bacteria in some ways but not all. They both are single celled organisms.

Plant cells have a cell wall. A cell wall is a rigid structure that gives support to the cell. Ribsomes that make proteins are called ribosomes. Ribosomes are the smallest of all of the ribosomes.

The endoplasmic reticulum (or ER) His is a system of folded membranes in which proteins, lipids, and other materials are made,

Lysosomes are vesicles that are responsible for digestion inside of a cell.

Humans are a multicelluar organism. This means that we are made of many cells. Multicellular organisms grow by making more organisms rather than making them larger.

The tissue of the cell is very important too. The tissue of a cell is a group of cells that work together to perform certain jobs.

A structure is the arrangement of parts in an organism and the function is the job the part does.