Chapter 4 Plasma membrane, nucleus and ribosomes.

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Plasma membrane, nucleus and ribosomes
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Chapter 4 Plasma membrane, nucleus and ribosomes

Figure 4.7a CYTOSKELETON: NUCLEUS ENDOPLASMIC RETICULUM (ER) Smooth ER Rough ER Flagellum Centrosome Microfilaments Intermediate filaments Microvilli Microtubules Mitochondrion Peroxisome Golgi apparatus Lysosome Plasma membrane Ribosomes Nucleolus Nuclear envelope Chromatin Be able to label a diagram like this by Tuesday.

Figure 4.7b CYTO- SKELETON NUCLEUS Smooth endoplasmic reticulum Chloroplast Central vacuole Microfilaments Intermediate filaments Cell wall Microtubules Mitochondrion Peroxisome Golgi apparatus Plasmodesmata Plasma membrane Ribosomes Nucleolus Nuclear envelope Chromatin Wall of adjacent cell Rough endoplasmic reticulum Be able to label a diagram like this by Tuesday.

What to Know The structure and function of the plasma membrane, nucleus and ribosomes.

Figure  m (a) TEM of a plasma membrane Outside of cell (b) Structure of the plasma membrane Inside of cell Hydrophilic region Hydrophilic region Hydrophobic region Carbohydrate side chains Phospholipid Proteins Plasma Membrane

Concept 4.3: The eukaryotic cell’s genetic instructions are housed in the nucleus and carried out by the ribosomes The nucleus contains most of the DNA in a eukaryotic cell. Ribosomes use the information from the DNA to make proteins. © 2014 Pearson Education, Inc.

Ribosome Chromatin Rough ER Nucleus Nucleolus Chromatin Nuclear envelopeNuclear envelope: Nuclear pore Inner membrane Outer membrane Pore complex Close-up of nuclear envelope Nucleus

Ribosomes: Protein Factories Ribosomes are complexes of ribosomal RNA and protein. Ribosomes carry out protein synthesis in two locations – In the cytosol (free ribosomes) – On the outside of the endoplasmic reticulum or the nuclear envelope (bound ribosomes) © 2014 Pearson Education, Inc.

Figure 4.9 TEM showing ER and ribosomes Diagram of a ribosome Ribosomes bound to ER Free ribosomes in cytosol Endoplasmic reticulum (ER) Ribosomes ER 0.25  m Large subunit Small subunit

1  m Nuclear envelope: Inner membrane Outer membrane back

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