Categories
MAINTAINING HOMEOSTASIS

See homeostasis in action


Homeostasis from roger961
HI ALL, I’M ADDING ANOTHER SLIDE SHOW ABOUT HOMEOSTASIS TO HELP YOU UNDERSTAND THIS PROCESS. JUST IMAGINE IF YOU CAN’T MAINTAIN A NORMAL BODY TEMPERATURE! (BY THE WAY WHAT IS YOUR NORMAL BODY TEMP?)
Categories
LIVING THINGS

INSIDE A CELL


 

 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

A typical animal cell, sliced open to reveal cross-sections of organelles.

A typical animal cell, sliced open to reveal cross-sections of organelles.
Click for larger image

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.

Categories
LIVING THINGS

LIFE PROCESSES


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)

Click here for video

Categories
MAINTAINING HOMEOSTASIS

The Immune System


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.

 Topic :the-im-system3 (1) (ppt)