Posts tagged as cell

The Basic Structure Of The Cell

“All cells are enclosed by a cell membrane. The function of the cell membrane is to hold the cell contents in place. It is also selectively permeable. This means that the membrane can select what can get into the cell and what can come out. The cell membrane is composed… Continue Reading →

What is a Cell?

“A cell is the basic unit of life. This means that we are built out of cells. A house could be built of concrete blocks. The block, in this instance, is the basic unit of the house just as the cell is the basic unit of life.”

Cell vs. Virus: A battle for Health

All living things are made of cells. In the human body, these highly efficient units are protected by layer upon layer of defense against icky invaders like the cold virus. Shannon Stiles takes a journey into the cell, introducing the microscopic arsenal of weapons and warriors that play a role… Continue Reading →

Flashcard: Leaving Cert Biology Cell Structure

Protoplasm – All the living parts of an animal cell/ nucleus,cytoplasm Plant Cell Wall function – Support, strengthen cell, cellulose in plant cells. Fully permeable Vacuole – Support, strengthen, stores materials( cell sap: salts, sugars, pigments) Mostly in plants Chloroplasts – Green structures in a plant where photosynthesis takes place… Continue Reading →

Flashcard: Leaving Cert Biology Cell Diversity

Tissue – Group of similar cells that perform a particular function Plant tissues – Vascular tissue: conducts water and nutrients throughout plant. Dermal: covers and protects, epidermis. Ground: photosynthesis, storage and support. Meristematic: produces new cells by mitosis. Dermal Tissue – The protective covering of plants; generally a single layer… Continue Reading →

Cells – Chapter Summary

A living thing is called an organism, e.g. a dog is an organism, so is a daffodil. The characteristics of living things are: Feeding -living things need food to get energy. Movement – living things move either their whole body (animals) or parts of the body (plants). Respiration – process by which organisms… Continue Reading →