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Cellular Structure & function unit notes

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1 Cellular Structure & function unit notes

2 Week 6- Friday 9/26 J- Bozeman- Why are cells so small video – 5 facts
TI- Journals Week 5 & 6 (Staple them together and make sure your NAME is on them!) CW- set up unit folder (Cover page, Essential Questions & Vocab)- DUE Mon 9/29 HW- Interactive Reader pgs 69-71

3 Week 7- Monday 9/29 J-What are the two different categories of cells? Describe how you could identify each type of cell TI- Interactive Reader pgs 69-71, Checking cover page, eq’s & Vocab CW- Guided Microscope notes HW- Microscope quiz Wed Left Side Right Side 7: Microscope Labeling 8: Microscope Notes

4 Week 7- Tuesday 9/30 J- Describe 2 different types of microscopes. Include the name, magnification, and use for each. TI- none CW- Finish guided microscope notes, Color the parts of the microscope worksheet HW- Microscope Quiz tomorrow

5 Week 7- Wednesday 10/1 J- List the steps to make a wet mount slide.
TI- none CW- 10 minutes study time, Microscope quiz NO NOTES (answer on a separate piece of paper. MAKE SURE YOU WRITE WHICH VERSION YOU HAVE.) HW- none

6 Week 7- Thursday 10/2 J- You have learned about the cell before. List as many organelles as you can (minimum of 3) and describe their functions. TI- none CW-Cell Theory, Scientists & Types of cells notes HW-Bozeman Cell Organelle Flip Lesson DUE MON 10/6 Left Side Right Side 9: History of Cells Timeline 10: Cell Theory & Types

Chapter 4

8 THE DISCOVERY OF CELLS Cells: is the smallest unit that can carry on all processes of life

9 ROBERT HOOKE An English Scientist studied nature in using an early light microscope Studied a thin slice of cork and viewed small cubicles or “cells” He then studied tree stems, roots, and ferns and noticed they had the same structures

10 ANTON VAN LEEUWENHOEK First person to view living cells
His microscope was had 10x the magnification of Hooke’s microscope 1673, viewed the first Protists he called “animalcules”

11 THE CELL THEORY Matthias Schleiden concluded plants were composed of cells Theodor Schwann concluded animals were composed of cells Rudolf Virchow noted that cells came from other cells These theories were combined to form the basic components of the cell theory

12 THE CELL THEORY All living organisms are composed of one or more cells
Cells are the basic units of structure and function in an organisms Cells come only from the reproduction of existing cells

Microscopes help scientists clarify the definition of life All living things have several basic characteristics: Consist of organized parts Obtain energy from their surroundings Perform chemical reactions Change with time Respond to their environment Reproduce

14 CELL SIZE Why is this important????
The size of a cell is limited by the relationship of the cell’s outer surface area to its volume Or surface area to volume ratio As a cell grows, the volume increase faster than its surface area Why is this important???? Because the materials that the cell needs (nutrients & oxygen) and waste produced (carbon dioxide) must be able to get in and out of the cell If a cell grows in volume quicker than the surface area the volume will not be able to leave the cell properly because it has gotten too big

15 PROKARYOTES Lack membrane nucleus and organelles
DNA is located in the nucleoid Prokaryotes are divided into 2 domains: Bacteria and Archaea

16 EUKARYOTES Have nucleus and organelles Composed of one or more cells
Eukaryotic cells are larger than prokaryotic cells

17 BASIC PARTS OF A CELL ALL Cells must have Cytoplasm
Genetic information (DNA) Cell (Plasma) Membrane Ribosomes

18 Week 7- Friday 10/3 J- Types of Cells sorting activity TI- none
CW- Cell organelle guided notes HW- Bozeman Cell Organelle Flip Lesson DUE MON 10/6 Left Side Right Side 11: Cell Organelles 1 12: Cell Organelles 2 13: Cell Organelles 3 14: Cell Organelles 4

19 ORGANELLES Sub-cellular structures “Mini Organs”

20 CYTOPLASM Location/ type of cell: within the cell membrane
Prokaryotes, eukaryotes, & bacteria Description: jelly-like goo that holds all organelles Function: contains the fluid of the cell, cytoskeleton, and all other organelles except the nucleus

21 Nucleus Types of Cells: Plants and Animals
Description: Membrane bound structure Function: control center of the cell Carries coded genetic information, DNA, for regulating function and reproducing themselves

22 NUCLEUS Nuclear envelope Nuclear pores
Description: contains the nucleus in a double membrane layer Function: Regulates what enters/leaves cell Nuclear pores Description: tiny protein lined holes cover the surface Function: allow the passage of RNA and materials to leave the nucleus

23 Nucleolus Nucleolus Type of cell: Inside the nucleus/ eukaryotes
Descriptions: is the site where DNA is concentrated when making ribosomal RNA Function: makes ribosomes

24 MITOCHONDRIA The “Power House” of the cell
Organelles transfer energy from organic molecules to ATP (Adenosine Triphosphate) ATP powers all the cell’s chemical reactions

25 Ribosomes Type of Cells: Prokaryote & Eukayotes Description:
small round organelle Located in the cytosol and on the rough ER Function: make proteins

26 PLASMA MEMBRANE Type of Cell- Prokaryote & Eukaryote Description:
The cell’s outer boundary made up of 2 phospholipid layers (bilayer) Have a hydrophilic (water loving) and hydrophobic (water fearing) layer Function: Covers a cell’s surface Acts as a barrier between the inside and outside of a cell (semipermeable) All material enters and exits through the plasma membrane

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