patterns in nature prelim help, lol (1 Viewer)

[SEAKING]

hey every1, i'm wondering if anyone here has detailed clear pics of the cell structures such as:
mitochondrion, chloroplast, golgi body, ribosomes, endoplasmic reticulum ,cell membrane, cell wall, etc ** for both animal and plant cells

oh yeah, umm it'd be great if someone could tell me what i should memorise for microscopes because i did a bit of practicals on that but most of the microscopes were crap so i had to keep on getting different 1's!

i also need help on surface-area/volume ratio cause i'm so horrible at maths.. i think i might be able to remember the formula for the cube but im worried they might use other shapes to fk me over

and that's about it i think.

 

[zingerburger]

I don't think you'll need specific pictures of all those organelles and cell structures. A diagram of cell structures should suffice. They'll probably give you an unlabelled diagram in an exam and you have to label it, but that's about it.

Here's an animal cell showing all important parts: http://regentsprep.org/Regents/biology/units/organization/cell.gif

This is about the best plant cell diagram I can find on the net: http://www.eng.auburn.edu/~wfgale/u...es/section0_images_2/plant_cell_structure.gif
Disregard the microtubules, microbody and middle lamella. The plasmalemma is another name for cell membrane.

Sorry, but I can't remember what you have to do for microscopes. All I can remember is that you might need to know a bit about the history of microscopes and other technologies that have helped in the development of cell theory like staining techniques. I presume you would have used the microscopes to look at cell structures? You might get a question asking you about how the development of microscopes has lead to development and understanding of cell theory.

Sorry about the next question too. I absolutely cannot remember how to do stuff about SA:V ratio. But what I can tell you that you may already know is that SA:V ratio is vital for diffusion of water and gases. In diffusion, it's all about increasing surface area so that the SA:V ratio can be maximised for efficient diffusion.

Maybe someone that's doing the prelim course or someone who still has their Year 11 notes might be able to help a bit more. Sorry.

 

[Bacilli]

Add this link 2 your favorites:

http://www.biology-online.org/kb/tutorials.html

It's a website dedicated to biology, and this particular link I've provided has tutorials which teach you the basics, as well as more advanced topics.

Also has a forum if you require any questions answered.

 

[over9k]

thank you so much

 

[Bacilli]

That's ok. I've a Biology textbook here for you if you want it? It's Excel HSC Biology 2004 Revised, therefore it's the newest version. You can have it for free.



































































$24.95 Postage + Handling, PM for details OLOLOLOLOLOLOLOLOLOLOLO.

 

[Buiboi]

from what i can remember, you must be able to distinguish and contrats between light and electron microscopes
eg some organelles are visible in the light that arent in the electron microscope
talk about how light cna show colour..i think or the electron, where the other one cant
one can view a living cell whereas i think electrons the thing examined has to be preserved or something
ummm
talk about magnification, light is less magnified then electron...

thats all i can remember, yeah im a bit sketchy on the microscope concept but yeha its been a long while since the time i learnt it but ha well,

 

[Survivor39]

Hey s-AINT. What virus is that in your sig? Is it a T2 or T4?