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Keep a finger on the pulse of science by keeping up
with some of the latest science discoveries and inventions.
Times they are a changing - and science is the engine of that change.
Mitrochondria contain their
own DNA, and duplicate themselves independently. Mitochondria are
inherited only from the mother!
"Look way over there! It's a woman
tending a tomato plant. We'll find plenty of plant and animal cells there!
"While we're walking over there, why don't I
tell you a bit about what we'll find when we look at the cells.
"Both plant and animal cells are bigger than
the cells like Simon and Ishy. They are also much, much more organized.
Scientists call plant and animal cells 'eukaryotes' just because they are organized.
These cells organize their insides by the job being done. It might be helpful to
look at some of them to see what I mean.
"Whew! that was a good walk! Let's
look at Rudy the root cell first. Hi! Rudy! Mind if my friends and I check you
"Sure, but I need to keep working."
"Rudy's job is to take water and small nutrients from the
soil and send it up to the part of the plant above the ground. It's a very important
job. When there is no rain, Rudy can't do his job and the whole plant gets thirsty
and starts to wilt! But, let's peek at what Rudy has inside him!
"You probably are thinking that Rudy is more
complicated than Ishy. He's really not, just more organized.
See the stuff named the nucleus, mitochondria,
vacuole, golgi, endoplasmic reticulum are just compartments that hold all
the stuff related to one job. These compartments are called
organelles. Cells are like houses. You can have one room cells,
like Ishy and BeeGee. You can also have cells with many rooms, like
Rudy and all the plant and animal cells. Each room would have a
separate function. Just like a house could have a kitchen and a living
room and a bedroom. Different activities take place in each room.
Organelles are like the rooms, with different activities taking place in
For Parents & Teachers
Learn more! Google:
cell science projects
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