weekly announcements quiz wednesday on chapter 2

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Weekly Announcements • Quiz Wednesday on Chapter 2

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Page 1: Weekly Announcements Quiz Wednesday on Chapter 2

Weekly Announcements

• Quiz Wednesday on Chapter 2

Page 2: Weekly Announcements Quiz Wednesday on Chapter 2

9/23/13 Do Now

• Describe Homeostasis in your own words

Page 3: Weekly Announcements Quiz Wednesday on Chapter 2

9/23/13 Agenda

• Do Now

• Review HW that is due today

• Finish Notebook Checks

• Review and Hand Back Labs

• HW: Prepare for tomorrow’s competition review of chapter 2. (pairs compete)

Page 4: Weekly Announcements Quiz Wednesday on Chapter 2

Reminder of Cell Theory

• All living things are made up of cells.

• Cells are the smallest working units of all living things.

• All cells come from pre-existing cells through cell division.

• Question: Who discovered the cell?

Page 5: Weekly Announcements Quiz Wednesday on Chapter 2

So What’s a Cell?

•A cell is the smallest unit that is capable of performing life functions. •A cell is the basic unit of life.

Page 6: Weekly Announcements Quiz Wednesday on Chapter 2

9/24/13 Do Now

Clear your desks of all materials and prepare for review competition!

HW: Study for Chapter 2 Quiz

Page 7: Weekly Announcements Quiz Wednesday on Chapter 2

9/25/13 Do Now

• Clear your desks after writing down your homework. Today is the Chapter 2 Quiz!

• HW: Read pages 33-34 and answer “Check Your Understanding” on page 35

Page 8: Weekly Announcements Quiz Wednesday on Chapter 2

Chapter 3: Questions We Will Answer

1. What are some things cells do to achieve homeostasis?

2. Are all cells the same? (Explain)

3. Cells have certain “parts” or organelles that function within the cell to allow it to perform its duties and maintain homeostasis. What do you think has to be done inside of a cell to maintain homeostasis?

Page 9: Weekly Announcements Quiz Wednesday on Chapter 2

9/26/13 Do Now

• Who discovered the cell? What was his experiment and what did he see?

• HW: Read pages 36-37

Page 10: Weekly Announcements Quiz Wednesday on Chapter 2

Cell Structure & Function

http://koning.ecsu.ctstateu.edu/cell/cell.html

Page 11: Weekly Announcements Quiz Wednesday on Chapter 2

Examples of Cells

Amoeba Proteus

Plant Stem

Red Blood Cell

Nerve Cell

Bacteria

Page 12: Weekly Announcements Quiz Wednesday on Chapter 2

Two Types of Cells

•Prokaryotic- primitive, disorganized

•Eukaryotic- organized, complicated

Page 13: Weekly Announcements Quiz Wednesday on Chapter 2

Prokaryotic

• Do not have structures surrounded by membranes

• Few internal structures

• One-celled organisms, Bacteria

http://library.thinkquest.org/C004535/prokaryotic_cells.html

Page 14: Weekly Announcements Quiz Wednesday on Chapter 2

Eukaryotic• Contain organelles surrounded by membranes• Most living organisms

Plant Animal

http://library.thinkquest.org/C004535/eukaryotic_cells.html

Page 15: Weekly Announcements Quiz Wednesday on Chapter 2

“Typical” Animal Cell

http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif

Page 16: Weekly Announcements Quiz Wednesday on Chapter 2

Cell Parts

Organelles

Page 17: Weekly Announcements Quiz Wednesday on Chapter 2

Cell Membrane

• Outer membrane of cell that controls movement in and out of the cell

• Double layer • Phospho-lipid bi-layer

http://library.thinkquest.org/12413/structures.html

Page 18: Weekly Announcements Quiz Wednesday on Chapter 2

Cytoplasm

• Gel-like mixture

• Surrounded by cell membrane

• Contains hereditary material

Page 19: Weekly Announcements Quiz Wednesday on Chapter 2

Nuclear Membrane

• Surrounds nucleus• Made of two layers• Openings allow

material to enter and leave nucleus (RNA)

http://library.thinkquest.org/12413/structures.html

Page 20: Weekly Announcements Quiz Wednesday on Chapter 2

Nucleus

• Controls cell activities- brain of the cell

• Separated from cytoplasm by nuclear membrane

• Contains genetic material - DNA

Page 21: Weekly Announcements Quiz Wednesday on Chapter 2

Nucleolus

• Inside nucleus• Contains RNA to build

proteins

http://library.thinkquest.org/12413/structures.html

Page 22: Weekly Announcements Quiz Wednesday on Chapter 2

Chromosomes

• Found in nucleus• Made of DNA• Contain instructions

for traits & characteristics (blueprint)

http://library.thinkquest.org/12413/structures.html

Page 23: Weekly Announcements Quiz Wednesday on Chapter 2

Mitochondria

• Produces energy through chemical reactions – breaking down fats & carbohydrates

• Controls level of water and other materials in cell

• Recycles and decomposes proteins, fats, and carbohydrates

http://library.thinkquest.org/12413/structures.html

Page 24: Weekly Announcements Quiz Wednesday on Chapter 2

Vacuoles

• Membrane-bound sacs for storage, digestion, and waste removal

• Contains water solution

• Help plants maintain shape

http://library.thinkquest.org/12413/structures.html

Page 25: Weekly Announcements Quiz Wednesday on Chapter 2

9/27/13 Do Now

• What do the vacuoles do in the cell?

• HW: Read pages 38-40 and complete the questions in “Check Your Understanding” at the bottom of page 39.

Page 26: Weekly Announcements Quiz Wednesday on Chapter 2

Ribosomes

• Each cell contains thousands

• Make proteins• Found on ribosomes

& floating throughout the cell

http://library.thinkquest.org/12413/structures.html

Page 27: Weekly Announcements Quiz Wednesday on Chapter 2

Endoplasmic Reticulum• Moves materials around

in cell• Smooth type: lacks

ribosomes• Rough type (pictured):

ribosomes embedded in surface

http://library.thinkquest.org/12413/structures.html

Page 28: Weekly Announcements Quiz Wednesday on Chapter 2

Golgi Bodies

• Protein 'packaging plant'

• Move materials within the cell

• Move materials out of the cell

http://library.thinkquest.org/12413/structures.html

Page 29: Weekly Announcements Quiz Wednesday on Chapter 2

Lysosome• Breaks down proteins,

fats, and carbohydrates• Transports and

breaksdown undigested material to cell membrane for removal

• Cell breaks down if lysosome explodes

http://library.thinkquest.org/12413/structures.html

Page 30: Weekly Announcements Quiz Wednesday on Chapter 2

Plant Cells are Somewhat Different…

List some things you might think are different about plant cells

Page 31: Weekly Announcements Quiz Wednesday on Chapter 2

http://waynesword.palomar.edu/images/plant3.gif

“Typical” Plant Cell

Page 32: Weekly Announcements Quiz Wednesday on Chapter 2

Chloroplast

• Usually found in plant cells

• Contains green chlorophyll

• Where photosynthesis takes place

http://library.thinkquest.org/12413/structures.html

Page 33: Weekly Announcements Quiz Wednesday on Chapter 2

Cell Wall

• Most commonly found in plant cells & bacteria

• Supports & protects cells

• Made of cellulose

http://library.thinkquest.org/12413/structures.html