I have a couple ideas it’s gonna be
pretty great. Right, Eli? “Yes!” Hello! It’s Ms. Leonberger and I’m here to talk to
you about the cell vocabulary Now you may be thinking “Why is Ms. Leonberger
doing this when we keep trying to go over it in class?” Well children I have a
theory. The theory is you’ll listen to me on a video better than you’ll listen to
me in real life Our first word is organism.
An organism is any living thing.
I happen to have brought one of my favorite living things. His name is Eli.
He is my bearded dragon son. I also have a theory that you’ll pay more attention
if there’s a cute animal in the video is it working?
Let’s continue!
The second word is stimulus. All living things react to
things that happen in the world like when I took Eli out of his tank he went
like this – because he didn’t want to be bothered… Shows he’s alive!
the third word is homeostasis right now in Eli’s little body, his body is working hard to
maintain stable conditions he’s maintaining homeostasis
now he’s not
warm-blooded so when his body gets too cold his little brain says “Go somewhere
warmer! I can’t maintain a warm temperature on my own!” Good thing for
homeostasis. Our next word is reproduce now Eli was adopted. But at some
point a male lizard and a female lizard had a baby and that baby was Eli.
Reproduce is just a fancy word that means to
make more of ones species.
number five metabolism
Eli eats and drinks, excretes waste, (poop) and exchanges gases. Just like us, he
breathes in oxygen breathes out carbon dioxide. He eats less
vegetables then he should… then he digests them and uses them as energy
number six
the cell theory the cell theory says the following things number one all living
things are made of cells that’s right Eli is so excited about the cell theory
number two all life processes happen because of cells Eli can crawl out of
his blanket because of his muscle cells and number three all cells come
from already living cells all of the cells that replicate in Eli’s body are
coming from his already existing cells number seven is compound microscope when
I look at Eli I can see his beautiful scaly skin! If I had a compound
microscope I might be able to see his cells but I can’t without one. Someday
when we get through our vocab we’ll get to use microscopes. Will we ever get
there? I don’t know. Number eight! Biotic. A review word from the last unit,
biotic means alive or was once alive this plant… if it dies, it’s still biotic
because it was once alive part of it fell off… yep! This part of the
plant’s gonna die soon, it’s still biotic! Oops, sorry plant. Number nine is the
opposite of biotic: abiotic. Abiotic means never alive in the first place for
example these stuffed animals they are made of various plastics they were never
alive to begin with sorry Pikachu sorry squirtle… You get it, Stitch.
Number 10 unicellular means made of one cell Uni means one. Just like how unicycle
means one wheel. Here’s a picture I drew of Eli riding a unicycle. It has one
wheel. Uni… Cycle. Number 11 is multicellular that means more than one
cell. So I drew this picture of Eli refusing to ride a bike with many many
wheels… a multi wheeled bike.
… That’s good right? (Mr. Leonberger [off-screen]) “That’s too many wheels!”) Too many wheels!
Number 12 is prokaryote we talked about this in a warm-up assuming that
I’m showing you this on the day I think I’m showing it to you.
A prokaryote… is an organism that has DNA but the DNA is just floating around
inside of it… It’s floating around prokaryotes can only ever be unicellular
so Eli’s not a prokaryote Eli’s a eukaryote because his cells have a
nucleus that the DNA lives inside of nice and snug in its little nucleus. We’re
eukaryotes too – What other things are inside the cells? Well I’m glad you asked!
A part of a cell inside is called an organelle. It’s a cute little word, it
means tiny organ like how our body is full of
organs like our stomach. The cell is full of organelles. Because it’s cute and
small like Eli!!!! Number 14 is a cell part called the cell wall it’s rigid and it
is very strong and it is only in… plant cells. These plants have cells with cell
walls. We don’t. We do not have cell walls, the plant does. Why you hogging all
the cell walls?? No worries, we have cell membranes. So do the plants but, we have
them too. All of our cells are kept together by this cell membrane
even Eli’s cells have cell membranes inside of the cell membrane is the
cytoplasm that’s the goopy stuff that keeps all of
our organelles circulating around the cell. That’s a good drawing, right?
“It looks goopy”. It’s goopy. “As described”
Number 17 is our old friend the nucleus that’s where the
DNA lives in eukaryotic cells. Sometimes people call it the brain of the cell
because the DNA has all the instructions on what the cell should do. DNA?! That’s
number 18! DNA stands for deoxyribonucleic acid. You don’t have to
memorize that, just thought you’d want to know. The DNA in your body tells you that
you’re a human being it tells your stomach to digest food, tells your brain
to think thoughts, tells your eyes to be a certain color. “Oh wow!” Same with Eli!
Eli’s got cute little lizard DNA that says you’re gonna have the cutest little
face in the whole world Number 19 is mitochondria. Mitochondria
are organelles that turn food into an energy called ATP that stands for a adenine
triphosphate another word you don’t have to know.
Mitochondria is why we can eat food and then have energy. Thanks mitochondria!
number 20 is chloroplasts they do something very similar but they’re only
in… you guessed it! …Plants! “Plants?” Plants! they’re what makes it so that plants can do
photosynthesis. Chloroplasts have a chemical called chlorophyll …you do have
to use that word sometimes Our next word is endoplasmic
reticulum all you really need to know right now about this is that it helps
transport things around the cell there are two kinds of endoplasmic reticulum
and you’ll learn about those in 9th grade. Right, Eli?
(in Eli’s voice) yeah there’s smooth ER and rough ER You’re so smart, Eli! Eli graduated
from 9th grade biology and finally number 22 vacuole. A vacuole is like a
storage space sort of like when I put Eli back in his tank that tank is like a
vacuole it holds things it releases things… and here’s a big important thing
about a vacuole: in plants there’s one big one and in animals
there’s many little ones What kind of vacuoles do Eli’s cells have? The end!!! “Eli!!!”
Eli say “bye!”, “study!” “Study hard!” Study your science, children.
“Study just like this one!” *Ms. and Mr. Leonberger making baby noises at Eli* Bonus footage!
“Whys he got to climb up my knee?” Eli, do you wish you were in 7th grade science? “oh wow wow” Oh Eli you were so cute when you’re asleep go back to sleep show the
kids how cute you are when you sleep Good to sleep… there we go oh oh so tired
from studying so hard he’s gonna pass a test! My hands!