Guide to the Cell
You will really love to take a tour inside a cell. Cells are like small factories that are adapted to perform different jobs.You will take a fascinating journey inside a cell by reading this excellent article .
By Alisa Zapp Machalek
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Welcome! I hope the transformation wasn’t too alarming. You have shrunk down to about 3 millionths of your normal size. You are now about 0.5 micrometers tall (a micrometer is 1/1000 of a millimeter). But don’t worry, you’ll return to your normal size before you finish this chapter.
At this scale, a medium-sized human cell looks as long, high, and wide as a football field. But from where we are, you can’t see nearly that far. Clogging your view is a rich stew of molecules, fibers, and various cell structures called organelles. Like the internal organs in your body, organelles in the cell each have a unique biological role to play.
Now that your eyes have adjusted to the darkness, let’s explore, first-hand and up close, the amazing world inside a cell.
- Cell functions (avinash4ppl.wordpress.com)
Hi, let us review the life process. You know cells carry out,nutrition, transport, respiration, regulation, synthesis, excretion, growth, and reproduction to maintain homeostasis and stay alive. We continue to live, because our cells are performing these life functions.
Check the following video for another look at the life processes (functions)
The Immune System
Do you know the connection between the immune system and the Coronavirus pandemic? Of course it’s the immune system. Help us fight this contagious viralinfection.You will be able to find out how the immune system protects you from getting sick.
The immune system , consists of three lines of defense .
Disease-causing organisms like bacteria, viruses, and parasites are examples of antigens; toxins and any other substance that stimulate an immune response.
Check the power point presentation for more information.