I learnt that cells are very important to organisms.
They are classified in many ways. For example, harmful and helpful.
Harmful cells are bacteria, cancer cells etc. Helpful cells are white-blood cells and red-blood cells. However sometimes, too many of good cells may cause in greater harm. Thus both types must be in balance and not too much or too little.
Also, I leart that even a cell microscopic thing can cause a great change in the organism and the factors in life. A organism cannot live well with a part of itself missing, thus telling me that in all things must be balanced in order to have a healthy and happy life...
Monday, April 7, 2008
Recap on Cell
The type of cell I want to write on is a plant cell. Probably one from the leaf of a plant.
1 : nucleus
3 : cell membrane
4 : cytoplasm
5 : cell wall
6 : vacuole
7 : chloroplasts
The nucleus ensures that the cell is working properly which is like the brain of the cell.
It contains the genetic information of the plant and can be extracted for gentic enginerring.
Without the nucleus the cell will die. Thus, this is the most important part of the cell.
The cell membrane is composed of protein and lipid (fat) molecules. It acts as a boundary layer to contain the cytoplasm (fluid in cell) and interlocks surfaces bind cells together. It is also
selectively permeable to select chemicals that pass in and out of cells. Without this the cytoplasm cannot be kept together.
The cytoplasm consists of water, salt, organic molecules, as well as enzymes which help catalyze the reactions with the cytoplasm. It holds together all of the cell's organelles, and divides the organelles within the cell.
The cell wall is a non-living secretion of the cell membrane, composed of cellulose. The cellulose fibrils are deposited in alternating layers for strength. It contains pits (openings) that make it totally permeable. It provides protection from physical injury and together with vacuole, it provides skeletal support. Thus giving the cell a shape. One way to break the cell wall is to boil the plant and then extract the cell from the plant.
The vacuole is a single layer of unit membrane that encloses fluid in a sack. It produces turgor pressure against cell wall for support. It also stores water and various chemicals including insoluble wastes.
The chloroplasts contains a greenish subtance called chlorophyll.
chlorophyll enables the plant to trap sunlight and thus it is very important without chlorophyll the plant cannot trap light and cannot photosynthesise and then the plant will die eventually. This is also a important part of the cell.
As the cell is known as the smallest unit of life, it is very important of the organism.
It move around the plant and send food and water and air to differrent parts of the plant.
It also uses its chlorophyll to trap sunlight in order for the leaves of the plant to photosynthesise and make food for the plant to stay healthy and alive.
The cell is the unit of life and contains the D.N.A of the plant and thus allowing genetic enginerring and cause improvement in the plant.
Without the cell, the continuity of the plant cannot be assured and will of course be extinct eventually.
Reflection on the topic BIOLOGIST...
In this activity, I learnt a lot about how different discoveries relate to each other and also I realised that one's discoveries can be caused by small factors like curiosity and mistakes.
I also learnt that in order to succeed in life, we must have the correct attitude.
I will spread this correct attitude to my friends and try to work hard and help man kind to have better lives and more knowledge about different things in life.
I also learnt that in order to succeed in life, we must have the correct attitude.
I will spread this correct attitude to my friends and try to work hard and help man kind to have better lives and more knowledge about different things in life.
Recap on Charles Darwin
CHARLES DARWIN((12 Feb 1809-19 April 1882)
He was a english naturalist and became eminent among scientists for his field work and inquiries into geology. He had made several discoveries and contributed to biology.
The causes of his success were his curiosity, confidence and determination. During his research, he got ill and was weak. However, he did not stop working due to his illness, instead he worked even harder in order to get his work done.
Darwin's discoveries were a great part in life science in fact the foundation of biology. He discovered the evolution of life and provided a unifying logical explanation for the diversity of life.
He also discovered the inter-relationship between organisms and the environment.
Experimenting fossils Darwin found as a naturalist before being a biologist also led him to discovering the origins of differnet species.
Thus, he contributed a great part to biology and caused more precised discoveries to be found.
He was a english naturalist and became eminent among scientists for his field work and inquiries into geology. He had made several discoveries and contributed to biology.
The causes of his success were his curiosity, confidence and determination. During his research, he got ill and was weak. However, he did not stop working due to his illness, instead he worked even harder in order to get his work done.
Darwin's discoveries were a great part in life science in fact the foundation of biology. He discovered the evolution of life and provided a unifying logical explanation for the diversity of life.
He also discovered the inter-relationship between organisms and the environment.
Experimenting fossils Darwin found as a naturalist before being a biologist also led him to discovering the origins of differnet species.
Thus, he contributed a great part to biology and caused more precised discoveries to be found.
Sunday, March 2, 2008
The Importance and the Functions of the Plant Cell
The cell is very important to the organism.
It move around the plant and send food and water and air to differrent parts of the plant.
It also uses its chlorophyll to trap sunlight in order for the leaves of the plant to photosynthesise and make food for the plant to stay healthy and alive.
The cell is the unit of life and contains the D.N.A of the plant and thus allowing genetic enginerring and cause improvement in the plant.
It move around the plant and send food and water and air to differrent parts of the plant.
It also uses its chlorophyll to trap sunlight in order for the leaves of the plant to photosynthesise and make food for the plant to stay healthy and alive.
The cell is the unit of life and contains the D.N.A of the plant and thus allowing genetic enginerring and cause improvement in the plant.
Saturday, February 23, 2008
Functions of different parts of the cell.
The nucleus ensures that the cell is working properly which is like the brain of the cell.
It contains the genetic information of the plant and can be extracted for gentic enginerring.
Without the nucleus the cell will die.
The cell membrane is composed of protein and lipid (fat) molecules. It acts as a boundary layer to contain the cytoplasm (fluid in cell) and interlocks surfaces bind cells together. It is also
selectively permeable to select chemicals that pass
in and out of cells.
The cytoplasm consists of water, salt, organic molecules, as well as enzymes which help catalyze the reactions with the cytoplasm. It holds together all of the cell's organelles, and divides the organelles within the cell.
The cell wall is a non-living secretion of the cell membrane, composed of cellulose. The cellulose fibrils are deposited in alternating layers for strength. It contains pits (openings) that make it totally permeable. It provides protection from physical injury and together with vacuole, it provides skeletal support. Thus giving the cell a shape.
The vacuole is a single layer of unit membrane that encloses fluid in a sack. It produces turgor pressure against cell wall for support. It also stores water and various chemicals including insoluble wastes.
The chloroplasts contains a greenish subtance called chlorophyll.
chlorophyll enables the plant to trap sunlight and thus it is very important without chlorophyll the plant cannot trap light and cannot photosynthesise and then the plant will die eventually.
It contains the genetic information of the plant and can be extracted for gentic enginerring.
Without the nucleus the cell will die.
The cell membrane is composed of protein and lipid (fat) molecules. It acts as a boundary layer to contain the cytoplasm (fluid in cell) and interlocks surfaces bind cells together. It is also
selectively permeable to select chemicals that pass
in and out of cells.
The cytoplasm consists of water, salt, organic molecules, as well as enzymes which help catalyze the reactions with the cytoplasm. It holds together all of the cell's organelles, and divides the organelles within the cell.
The cell wall is a non-living secretion of the cell membrane, composed of cellulose. The cellulose fibrils are deposited in alternating layers for strength. It contains pits (openings) that make it totally permeable. It provides protection from physical injury and together with vacuole, it provides skeletal support. Thus giving the cell a shape.
The vacuole is a single layer of unit membrane that encloses fluid in a sack. It produces turgor pressure against cell wall for support. It also stores water and various chemicals including insoluble wastes.
The chloroplasts contains a greenish subtance called chlorophyll.
chlorophyll enables the plant to trap sunlight and thus it is very important without chlorophyll the plant cannot trap light and cannot photosynthesise and then the plant will die eventually.
Cell.
The type of cell I want to write on is a plant cell. Probably one from the leaf of a plant.Some numbers are extra so I will only identify a few.
1 : nucleus
3 : cell membrane
4 : cytoplasm
5 : cell wall
6 : vacuole
7 : chloroplasts
Saturday, February 9, 2008
The brackets i added..
Ms Khoo,
the sentences i added are the ones in the brackets for convenient reference.
is it okay to do it this way?
the sentences i added are the ones in the brackets for convenient reference.
is it okay to do it this way?
Wednesday, February 6, 2008
Discoveries of darwin.
Darwin discovered the evolution of life which is the foundation of biology (by providing a unifying logical explanation for the diversity of life.)
He discovered the effects of living things on the environment.
(He also discovered the origins of species and also experimented fossils he found as a naturalist before being a biologist.)
Without his discoveries, the world would not be so successful in term of biology.
The resources of my work: http://en.wikipedia.org/wiki/Charles_Darwin
He discovered the effects of living things on the environment.
(He also discovered the origins of species and also experimented fossils he found as a naturalist before being a biologist.)
Without his discoveries, the world would not be so successful in term of biology.
The resources of my work: http://en.wikipedia.org/wiki/Charles_Darwin
http://www.lucidcafe.com/library/96feb/darwin.html
http://omni.cc.purdue.edu/~sbenning/el102c/Darwin.html
http://www.blupete.com/Literature/Biographies/Science/Darwin.htm
Darwin's attitude
(Darwin's curiosity caused him to do research on the specimens he collected and thus made his way to his discoveries)
His determination and believing in himself caused him to succeed most of the time...
He also ignore his illness and went on with his work and thus perservering the pain of his illness.
His determination and believing in himself caused him to succeed most of the time...
He also ignore his illness and went on with his work and thus perservering the pain of his illness.
Famous biologists: Charles Darwin
CHARLES DARWIN((12 Feb 1809-19 April 1882)
He was a english naturalist and became eminent among scientists for his field work and inquiries into geology. His discovery was at first not believed by the scientific community. However with his evidence it was believed. He also had made several discovery and contributed to biology.
He was a english naturalist and became eminent among scientists for his field work and inquiries into geology. His discovery was at first not believed by the scientific community. However with his evidence it was believed. He also had made several discovery and contributed to biology.
Thursday, January 24, 2008
Welcome to my bio journal!
Welcome my friends and most of all my science teacher...
Miss Khoo...
To my bio journal...
Miss Khoo, please correct me if I do wrong in my work...
Thank You
(: Goh Junjie :)
Miss Khoo...
To my bio journal...
Miss Khoo, please correct me if I do wrong in my work...
Thank You
(: Goh Junjie :)
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