Eukaryotes are cells that have nucleus' and Prokaryote have no nucleus'. I will be writing about the Prokaryote cells.
The cell walls' main job is to protect everything inside of it, although, another very important job it has is to let things out and in as they are needed. The very outside layer of the cell wall is called the cellular membrane.
Inside the cell is the nucleus which appears dark in color under a microscope. The nucleus contains the DNA for the cell and the nucleolus. The nucleus is the sometimes called the "headquarters" of the cell because it seems to be at the central location.
Dotted all throughout the cell fluid, the Cylosol, are little Ribosomes. The Ribosomes make the proteins for the cell. They embed themselves throughout the rough endoplasmic reticlulum(E.R.), making it appear bumpy and rough. Anywhere there is not a Ribosome attached is called a smooth E.R.
When the Ribosomes are making so much protein, something has to package it. This is where the golgi body comes in. It fills a little bubble with proteins and then squeezes it out. It is then packaged in a nice little bubble and can float around until used or sent to another cell.
Source: Khan Academy Lecture
Biology - A Panorama of Life
Exploring the Living World through Living Ideas
Current Events in Biology
Friday, January 27, 2012
Friday, November 11, 2011
DNA Extraction Lab
Completed November 11, 2011
How to extract your own DNA - how to instructions.
We did this lab twice with two different people extracting DNA through saliva. We did not break down enzymes on either attempt, but may repeat this lab later to see if that yields more DNA samples. The last extraction provided us with multiple DNA samples so we used a pipet to put a small sample on a slide. We didn't stain it. We viewed at 5x, 10x, 100x. We could see strands at lower power magnification, but higher power only revealed cells.
For a better how-to see University of Utah's How to extract DNA from any living thing. Read Frequently Asked Questions for a follow-up of the lab for understanding more of the science behind this lab.
The important step of pouring alchohol down the sides of the glass. |
This is a DNA strand after about 15 minutes. It's clearly visible, but is easier to see when we shine a flashlight through the glass. |
This is DNA extracted from the second person when viewed through the side of the glass. |
Tuesday, October 11, 2011
Monday, October 10, 2011
Khan Academy Biology
Planning here for the Second Term.
View the Khan Academy Biology lectures for this term's work.
Expectations following lecture:
View the Khan Academy Biology lectures for this term's work.
Expectations following lecture:
- Written or illustrated narration
- Explanation of concept
- Understanding of vocabulary terms
Wednesday, July 13, 2011
Thursday, June 16, 2011
The Kingdoms of Life
"Wisdom reaches mightily from one end of the earth to the other, and she orders all things well." (Wisdom of Solomon 8:1)God is ordered, and His Creation reflects this order. Man has always sought to understand this order, and one of the ways we understand it is to classify it. In seeking to find some order in the living world, scientists looked to classify all living things into KINGDOMS. When man first began to classify living things, only two Kingdoms were used - PLANTS and ANIMALS. (** HISTORY NOTE ** Aristotle classified animal species, Carol Linnaeus is responsible for our modern nomenclature, and classified living things into two kingdoms - plant and animal)
Read Chapter 4 in Biology: Inquiry Into Life as a background, recognizing that at the time of this writing (1961) scientists recognized only two kingdoms, plant and animal.
As man began to understand living things with more detail, further nuances and distinctions began to be understood, and thus the need for more Kingdoms became apparent so that living things could be more accurately classified. There are now SIX KINGDOMS:
BACTERIA
ARCHAEA
PROTISTA
FUNGI
ANIMALIA
PLANTAE
Explore the Kingdoms of Life:
- The Six Kingdoms - read and narrate (great overview of the six kingdoms).
- Kingdoms of Life - A Webquest for High School Biology - print the chart provided and complete the task as written.
- Biological Classification - read and narrate. Be prepared to list the different taxa from Kingdom to Species IN ORDER
- Principles of Classification - read and narrate.
Overview of the Year - TERM 1
Term 1
10 weeks
10 weeks
*********************************** WEEK 1 ***********************************
COMPLETE
The Way Life Works - p. 1 - 8Biology: Inquiry Into Life
Chapter 1 - How the science of life concerns you
READ ONLY
The Microscope and How To Use It by Dr. George Stehl - week 1 - 5
Summer World by Bernd Heinrich - week 1 - 5
********************************** WEEK 2 **********************************
COMPLETE
The Way Life Works - p. 9 - 16Biology: Inquiry Into Life
Chapter 2 - How the scientific method establishes scientific laws
Review Questions 1, 2, 5
USING MICROSCOPES - see sidebar
The Microscope and How To Use It by Dr. George Stehl - week 1 - 5
Summer World by Bernd Heinrich - week 1 - 5
*********************************** WEEK 3 ***********************************
COMPLETE
The Way Life Works - p. 17 - 24Biology: Inquiry Into Life
Chapter 3 - How you differ from a rock
Review Questions 7, 10
Periodic Table of Elements in Video - view all elements, check off elements using a printable Periodic Table as you view them.
The Microscope and How To Use It by Dr. George Stehl - week 1 - 5
Summer World by Bernd Heinrich - week 1 - 5
*********************************** WEEK 4 ***********************************
COMPLETE
Biology: Inquiry Into Life
Interlude: The beginning of life - chance or creation
READ ONLY
The Microscope and How To Use It by Dr. George Stehl - week 1 - 5
Summer World by Bernd Heinrich - week 1 - 5
*********************************** WEEK 5 ***********************************
COMPLETE
Complete - The Way Life Works - p. 33 - 40Complete - Biology: Inquiry Into Life
Chapter 4 - The emergence of life in time
The Kingdoms of Life post
IN PROGRESS - Microbe Hunters by Paul De Kruif - week 6 - 10
IN PROGRESS - The Curious Naturalist by Sy Montgomery - week 6 - 10
IN PROGRESS - The Curious Naturalist by Sy Montgomery - week 6 - 10
*********************************** WEEK 6 ***********************************
COMPLETE
COMPLETE
The Way Life Works - p. 41 - 48
Biology: Inquiry Into Life
Chapter 5 - The physical basis of life
CELLS - see sidebar
LABS - see sidebar:
Virtual cells
Mitosis/Cell reproductionKaryotyping
Microbe Hunters by Paul De Kruif - week 6 - 10
The Curious Naturalist by Sy Montgomery - week 6 - 10
*********************************** WEEK 7 ***********************************
COMPLETE
The Way Life Works - p. 49 - 56Biology: Inquiry Into Life
Chapter 6 - The differences between plants and animals
READ ONLY
Microbe Hunters by Paul De Kruif - week 6 - 10
The Curious Naturalist by Sy Montgomery - week 6 - 10
*********************************** WEEK 8 ***********************************
COMPLETE
The Way Life Works - p. 57 - 64LABS FROM THE TEXT Biology: Inquiry Into Life (p. 64 - 66)
2 - Biology in the news digital scrapbook
3 - Photosynthesis (see lab sidebar)
13 - Raising microscopic plantsMicrobe Hunters by Paul De Kruif - week 6 - 10
The Curious Naturalist by Sy Montgomery - week 6 - 10
********************************** WEEK 9 **********************************
COMPLETE
The Way Life Works - p. 65 - 74Microbe Hunters by Paul De Kruif - week 6 - 10
The Curious Naturalist by Sy Montgomery - week 6 - 10
********************************** WEEK 10 **********************************
COMPLETE
LABS - see sidebar
Microbe Hunters by Paul De Kruif - week 6 - 10
The Curious Naturalist by Sy Montgomery - week 6 - 10
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