Cell Structure

Magnification and Resolution
1. The number of times greater that an image is than the actual object
2. The ablity to distinguish between two objects that are very close together
Smooth endoplasmic reticulum
1. network of membranes
2. creates lipids and steriods e.g. cholesterol, oeestrogen etc
Rough endoplasmic reticulum
1. a network of membranes (sacs) extending from the outer membrane of the nucleur envelope
2. has membrane bound ribosomes on its surface
3. created proteins move into the cisternia where they may be modified
4. Vesicles break from the ER to carry proteins to the Golgi body
Golgi body
1. stack of flattened membranes
2. collects, sorts, processes and packages substances to be taken to other parts of the cells or secreted
  1. e.g. removal of methionine from newly formed proteins to create funtional proteins
3. continuously being broken down and formed
Mitochondria
Lysosomes
Ribosomes
Centriolesand microtubules
Choroplasts
Cell wall
Large permanent vacuole and tonoplast
Plasmodesmata
Cell surface membrane
1. 7nm thick
2. partiallly pearmable
3. trilamar appearance
4. controls the movement of substances into and out of the cell
Nucleus
1. Nuclelous - creates ribosomes
2. Nucleur envelope - double membrane surrounding nucleus
3. Nucleur pores - breaks in the nucleur envelope that allow substances in and out the nucleus
  1. e.g. nucleotides and ATP into the nucleus, mRNA and ribosomes out of the nucleus
4. Chromatin - loosely coiled chromosomes which have funtional units of DNA called genes that control the activites of the cell

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	Created by Kudzai Ny over 8 years ago