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7 Cards in this Set

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Nucleus

• 1-3 um


• site of cellular DNA storage, replication and transcription


DNA + histone = CHROMATIN

Ribosome

2 subunits: large and small


2 types: free and unbound

Endoplasmic Reticulum

Smooth: NO ribosomes, involved in ion movement


Rough: associated with nucleus, covered in ribosomes, site of translation

Golgi Apparatus

1. Cis golgi network (entry)


2. Golgi stack


3. Trams Golgi network (exit)

Vacuoles

Functions:


1) provide turgor


2) storage


3) accumulation


4) admits/prevents passage

Cell wall

• forms exoskeleton


functions:


1) structural support


2) maintains cell shape


3) protects protoblast


• Composition:


- pectins


- Hemicellulose


- Cellulose


- Lignin ---> responsible for strength, waterproofs and formed by dimerisation and dehydration

Water

POLAR!!


O is more electronegative than H


• e- in O-H aren't shared, so pulled towards O


• O has negative charge


• H has positive charge