Cells

well, you are in year 7 and don´t know nothing about cells? About what exactly is the test?

Try this
Google Search
Google Define Cells

Re: Cells


Hi Cheeki-Bri:

Cell, defined: A cell is a room with four walls and steel bars usually contained in a jail facility or prison. People often find themselves in a cell when they commit crimes to compensate for their lack of education, e.g., waiting until the last possible minute to study for an exam and have no clue what the exam is about.

Good luck on your test tomorrow.

Err,
I suppose that it was meant the biological cells.....

"When your body divides into two or more hides,
that's mitosis." (to the tune of That's Amore)

cellular wake-up call



Ah, so true Thok. On the other hand, in assessing the "no clue concerning subject matter of tomorrow's test" situation, I determined that Cheeki-Bri was in need of a "cellular" wake-up call....

Huh. I thought phones.

That would be useful, tiny cell phones to phone in a lifeline during the test.

I thought they were rather large violins. They are too big to fit under your chin, so you have to put the end on the ground.

Here I was thinking Cell-oh's were an uppity cereal...

i was talking about the cells that make up our body structure....

nah dah i wasnt having a test on mobile phones or prison cells...

I'm guessing that by now you've stopped checking but here's a brief summary - sorry if i miss stuff out / stick extra stuff in, and sorry if i patronise slightly... but i'm 6 years longer down the road of Biology and i've forgotten what a year 7 should know. That said you might find the www.bbc.co.uk/schools site pretty useful

A cell is the smallest complete unit of life of any living organism.
All cells (apart from erythrocytes - but for your purposes all cells) have a nucleus which contains all the cell's DNA, which codes for any proteins that have to be made. All cells also have a cell membrane to keep in the cytoplasm - in which all the chemical reactions occur. Plant cells will also have a cell wall, to maintaid turgidity - i.e. to stop them bursting as they fill with water and a vacuole, which acts as a water store and keeps the plant turgid (when the vacuole starts to empty plants droop). Specialised cells in the leaf (called palisade mesophyll cells if you feel like being impressive ) also have organelles called chloroplasts, which contain a chemical called chlorophyll, which is the pigment that absorbs light for photosynthesis.

Hope that that covers the basics: if you need to know anything else then post back, i'll be on throughout the day

Erythrocytes do have a cell membrane. What they haven't got is a nucleus. Neither, of course, do bacterial cells, which means that most of the cells on the planet do not, in fact, have a nucleus. And a great many chemical reactions occur at the surface of the cell, or nothing would ever be able to eat anything else.

Hehe cheers for pointing that out - i was very tired and i can't believe i wrote that: stopped mid sentence and wrote a different one in my brain. I'll edit to save on any confusion

bekaboo why dont you have a photo??? dontn you like pictures???

Ummm because i didn't add one when i signed up and i've never really thought about it since. As it happens i don't like photos - i am incredibly unphotogenic

Meisos - single cell reproduction.
I would recommend you buy a revision guide...

a revision guide.... it aint a huge test just a little classroom one no need for spending big bucks...