Biology Unit 5

Bell Ringer: What are some major differences between the plant and animal cell?

1. Bell Ringer

2. Hand out test grades. Last day for late or make-up work is next Thursday!

3. Lab: Animal Cell

4. Homework: Read article

Class fees need to

be paid by the end

of the 1st 9 weeks!

Either cash, check or

fee waiver!

Bell Ringer: Cells undergo plasmolysis after drinking sea water. What is plasmolysis?

1. Bell Ringer

2. Lab: Finish animal cell and begin plant cell lab

3. Unit 5-1 Notes if time

4. Homework: Research a disease that is caused by a malfunction by a cellular organelle; create a power point (more info to follow); disease due tomorrow.

Class fees need to

be paid by the end

of the 1st 9 weeks!

Either cash, check or

fee waiver!

Bell Ringer:What is the difference between a prokaryote and eukaryote cell?

1. Bell Ringer/Check hmwk

2. Competition Activity

3. Unit 5-1 Notes

4. Observing a cell membrane

5. Handout Progress Report (unofficial)

www.freewebs.com/nehskelley

Bell Ringer: The cell membrane is said to be a “phospholipid bi-layer”. What does this mean?

1. Bell Ringer/check progress reports

2. Cell Structure

3. Unit 5-2 Notes (quiz on Thursday)

4. Computer Activity: Cell Sweet 16

5. Reminder: Cell organelle disease due Wednesday, Cells Alive due tomorrow

All late, make-up and retakes must be in by Thursday, Oct.9! I will be here after school on Tuesday from 2:30-3:30

Bell Ringer: What do the terms hydrophilic and hydrophobic mean?

1. Bell Ringer/Collect Hmwk “Cells Alive”

2. Competition Activity

3. Unit 5-3 Notes (Quiz on Thursday)

4. Cell Membrane Activity

5. Due FRIDAY!!: Website PPT

All late, make-up and retakes must be in by Thursday, Oct.9! I will be here after school on Tuesday from 2:30-3:30

http://www.wisc-online.com/objects/index_tj.asp?

objID=AP11403

Bell Ringer: if “cyt” means “cell”, what do you think the following mean? Cytology, exocytosis, endocytosis and cytopathogen

1. Bell Ringer

2. Competition Activity

3. Unit 5-4 Notes (Quiz Tomorrow!)

4. Observing a Cell Membrane Activity

5. Power Point due Friday!

All late, make-up and retakes must be in by Thursday, Oct.9!

Bell Ringer: The cell membrane is “selectively permeable” what does this mean?

1. Bell Ringer

2. Unit 5 Quiz

3. Begin Lab on Selectively Permeable Membrane

All late, make-up and retakes must be in today!

Bell Ringer: what is the difference between osmosis and diffusion?

1. Bell Ringer/Collect2. Competition Activity

3. Computer Webquest (due today)4. Friday Drawing

Topic: Cell Structure Unit 5-1

Read over Ch.7 in text

Scientists contributing to the cell theory:

-Hooke: first to use light microscope, looked at cork, called chambers “cells” (1665)

-van Leeuwenhoek: first to observe organisms in pond water (1674)

-Schleiden: concluded all plants made of cells (1838)

-Schwann: concludes all animals are made of cells (1839)

-Virchow: proposed that all cells come from existing cells (1855)

Topic: Cell Structure Unit 5-1

Cell theory:

-all living things are composed of cells

-cells are the basic units of structure and function in living things

-new cells are produced from existing cells

Prokaryotes:

-have cell membrane and cytoplasm, but NO NUCLEUS

-all bacteria

Topic: Cell Structure Unit 5-1

-Eukaryotes:

-have a nucleus, cell membrane and cytoplasm

-have specialized organelles

-include all plant, animal, fungi and many microbes

Topic: Cell Structure Unit 5-2

Cell Structures:

-cell wall: found in many organisms including plants, algae, fungi and nearly all prokaryotes

-main function is to provide support and protection

-made from fibers of carbs and proteins (plant cell: cellulose)

-nucleus: controls most cell processes and contains hereditary info DNA

-chromatin: uncoiled chromosomes (coils when cell is about to divide)

Topic: Cell Structure Unit 5-2

Nucleolus: dense part of nucleus, makes ribosomes

Cytoskeleton: network of protein filaments that helps cell maintain its shape; also involved in cell movement

-microtubules: hollow tubes that can be “tracks” to move things

-microfilaments: long thin fibers that function in movement and support

Topic: Cell Structure Unit 5-4

Ribosomes: makes proteins (found on rough ER) gets directions from RNA during protein synthesis

Endoplasmic Reticulum: components of the cell membrane are assembled and some proteins are modified

Golgi Apparatus: (complex) enzymes found here attach carbs and lipids to proteins

Lysosomes: filled with enzymes, break down compounds to be used as food particles

Topic: Cell Structure Unit 5-4

Vacuoles: used for storage (if small, sometimes called vesicles)

Chloroplasts: use energy from sunlight to assemble water and carbon dioxide into glucose or energy rich compounds

Mitochondria: use oxygen and water to produce ATP, the energy molecule of cells

-do plants need mitochondria?

Yes! Until a plant develops chloroplasts, it needs ATP to grow