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CTG
Cells, Tissues and Genetics PT1 - 1/10/24
Question | Answer |
---|---|
1. cell theory: 3 basic tenets? | 1. all life composed of one or more living cell(s) 2. cells are basic unit of all life on earth 3. new cells can only be made by the division of old cells 4. cells contain genetic material passed from parent to daughters |
2. in prokaryotes how is genetic information stored? | genetic information stored in a single chromosome (nucleoid) |
3. how are eukaryotes compartmentalised? | due to their membranes |
4. why is it good that eurkaryotes are compartmentalised? | allows incompatible reactions to occur simultaneously |
5. perinuclear space? | space between inner and outer membrane of nucleus |
6. outer membrane continuous with? | RER |
7. inner membrane continuous with? | nuclear lamina which binds to chromatin |
8. NPCs? | nuclear pore complexes |
9. what are NPCs made of? | nucleoporins |
10. what do NPCs deal with? | bidirectional transport |
11. what can travel through NPCs? | small water-soluble molecules move through aqueous passages in NPC |
12. nuclear lamina? | protein filaments attached to inner membrane of nuclear envelope |
13. function of nuclear lamina? | 1. attachment site for chromatin and cytoplasmic cytoskeleton 2. facilitation of DNA replication and RNA transcription 3. cell cycle regulation and apoptosis 4. structural support |