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Thursday, January 14, 2010

Red Blood Cells




1)What are the organelles found in the cell?

They are packed full of a special substance called hemoglobin(Hgb), a complex molecule composed of protein and iron.



2)List the structural features of the cells?

Red blood cells have a unique shape and inner components that allow them to efficiently transport oxygen and direct the elimination of carbon-dioxide. They have a biconcave discs, having a depressed center on both sides. These depressed centers allow the cells to have more cell membrane surface which can be exposed to diffusing oxygen while transiting the lungs. This structure also allows them to be more flexible when "negotiating tight passengers". They have a flexible nature that allows them to bend and bounce back to their original shape. This comes in handy when they must squeeze through the minute capillaries alleyways between cells in the tissues.



3)What are the function of these organelles?

The function of this organelle is to pick up oxygen and hold on to it until it reaches parts of the body that has low concentration in oxygen and then it releases the oxygen to diffuse into local tissues.


4)Why are there no other organelles in the red blood cells other than hemoglobin?

It is beause they need more space to contain more hemoglobin which is used to carry more oxygen thus there are no other organelles.

13 comments:

infamous08 said...
This comment has been removed by the author.
helene said...

I learnt that red blood cells are very flexible and can bend and bounce back into its original shape.

Kim said...

I am quite amazed that red blood cells have a flexible nature that allows them to bend and bounce back to their original. Good job in arranging all the information.

Regards,
Kimberly

infamous08 said...

I now know more thing about red blood cells. Very interesting.

A.L. said...

I think what struck me the most was how they only have hemoglobin as a organelle to make more space for oxygen.

Fatin Zafirah said...

After reading this post,I learnt that red blood cells can bounce back into its original shape after it is bent.

serene said...

I learnt that red blood cells have depressed centers which allows the cells them to have more cell membrane surface

sstjourney said...

I learnt that the red blood cells have a flexible nature that allows them to bend and bounce back to their original shape.

Millie Thng

jeremy said...

I learnt that Hemoglobin is composed of protein and iron.

Denise said...

I learnt that the depressed centers on both sides of the red blood cells allow the cells to have more cell membrane surface which can be exposed to disseminate oxygen while transiting the lungs. This structure also allows them to be more flexible when "negotiating tight passengers".

Roy Chua said...

I learnt that red blood cells have a flexible naturesto allow them to bend.

Roy Chua said...

I learnt that red blood cells have a flexible naturesto allow them to bend.

IZK said...

I learnt that the organelle that adsorbs the oxygen is called the "hemoglobin"