1. Title: Biology 10/17/06 Objectives: Class Topics
1/16/2019
Title: Biology 10/17/06
Objectives:
To learn about microscopes and scientists that discovered cells and cell parts.
Class Topics
Hand in lab Measuring with a Microscope before the bell rings.
1A – also hand in “Measurement W.S”
Review Chapter 3 Quiz 1
Notes:
Eukaryotic cells
Cell membrane
Organelles
“If you make people think they’re thinking, they’ll love you; but if you really make them think, they’ll hate you.”
Don Marquis
Wednesday, January 16, :59 PM

2. Class Assignments 1A only – Measurement W.S. 10/17/06
1/16/2019
Class Assignments
What
By When
1A only – Measurement W.S. 10/17/06
Measuring with a microscope 10/17/06
Read /20/06
W.S. 3.3 (DR/Quiz) 10/20/06
Due this class period
Due next class period
Due in the future

3. Grade Sheet 1A – SR p. 61 - 5 pts 3A SR p. 42 – 6 pts
1/16/2019
Grade Sheet
1A – SR p pts
3A SR p. 42 – 6 pts
2A – Measurement W.S. – 10 pts
4A – SR p. 47 – 5 pts

4. All cells have… Cell membrane – around outside
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All cells have…
Cell membrane – around outside
Cytoplasm – fluid of cell
Cytoskeleton – structure of cell
Ribosomes – make protein
DNA – used to make protein
Some lose these after time due to specialization

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Eukaryote
Organism that has cells with nuclei and internal compartments (membrane bound organelles)
ex. animals, fungi, plants, protists
Internal membranes connect organelles
Vesicles
Small cavity to move materials around cell

6. Cytoskeleton Microtubules (tubulin) microfilaments (actin)
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Cytoskeleton
Microtubules (tubulin)
thick strands of protein
Used to move RNA
microfilaments (actin)
thin strands of protein
Change shape of cell

7. Cell Membrane Semipermeable (selectively permeable)
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Cell Membrane
Semipermeable (selectively permeable)
Function (lipid bilayer)
Encloses cell
Allows material to enter and leave
Small polar and nonpolar particles
Phospholipid
Polar head & nonpolar tail
Lipid bilayer
Two layers of phospholipids

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Phospholipid Bilayer
Hydrophilic
Hydrophobic

9. Membrane Proteins Marker proteins Receptor proteins Enzymes
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Membrane Proteins
Marker proteins
Advertise cell type
Carbohydrates attached
Receptor proteins
Bind to specific substances (signal molecules)
Cause a reaction to occur within the cell
Enzymes
Catalyze reactions
Transport proteins
Move larger substances in and out

10. Functions of the cell membrane
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Functions of the cell membrane
Enclose cell
Allow transport of materials
Small polar and nonpolar
Identify the cell
Allow transport of larger materials
To receive signal molecules
To catalyze reactions

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13. Control Center or main office
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Nucleus
Function: to regulate the production of proteins (control center of the cell)!!!!
Contains the cell’s DNA
Most prominent structure in the cell
Control Center or main office
Cell as a factory link

14. Parts of the nucleus Chromatin - DNA uncoiled (w/ protein)
1/16/2019
Parts of the nucleus
Chromatin - DNA uncoiled (w/ protein)
Found when the cell IS NOT dividing
Chromosomes - DNA coiled or condensed - rod shaped
Found when the cell IS dividing
Nuclear envelope - membrane around the nucleus - has holes called nuclear pores
Nucleolus – where the ribosomes are formed

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17. Ribosomes Site of protein synthesis Made of RNA and protein
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Ribosomes
Site of protein synthesis
Made of RNA and protein
Found in cytoplasm and on ER
Workers

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Ribosomes
Protein synthesis