1. AS Biology
This is a product of the science department of Dartford Technology College

3. Endoplasmic Reticulum
Hen+ Dough + Plaice + Mike + Wreck + Tickle + Hem.
Complex system of sheet like double membranes continuous with the nuclear membrane
Two types of ER –
smooth – has no ribosomes attached (RER)
rough – has ribosomes attached (SER)

5. Golgi Body Goal + Guy + Body
Formed from small pieces of rough ER which form small vesicles which join to make a Golgi body

6. My

7. Mitochondria My + Toe + Con + Dry + Hair. Relatively large organelle
Rod/sausage shaped – 1um – 5um
Have a double membrane
The outer controls the entry & exit of materials
Inner has many folds called cristae

9. Centriole Cent + Tree + Hole.
Two short bundles of hollow cylinders (microtubules) positioned at right angles to each other
Found just outside the nucleus in a clear area of cytoplasm called the centrosome
Wall of each centriole is made of 9 triplets of tubes arranged at an angle

11. Ribosome Rye + Bows + Home.
Small dense structures found in huge numbers.
Can be attached to the rough ER of floating in the cytoplasm.
Are about 20 – 25 nm in diameter in eukaryotic cells and slightly smaller in prokaryotic cells

12. ER

13. Chloroplast Claw + Row + Plaster + (take away ER)
Found inside photosynthetic tissues of plants (abundant in palisade mesophyll cells of leaves)
Flat discs 2-10 um in diameter & 1um thick
Have a double membrane called the chloroplast envelope
Inner membrane folded into a series of lamellae

15. Nuclear Envelope Nuclear (bomb) + Envelope.
The nucleus is surrounded by a nuclear membrane / envelope
Double membrane – outer is continuous with the ER
Nuclear pores in the membrane allow the passage of large molecules in & out (eg messengerRNA)

17. Nucleolus New + Clay + Hoe + Lass.
A spherical structure called the nucleolus is found in the nucleus – this makes ribosomal RNA and assembles the ribosomes.