Video Review 2 – Cells

http://www.youtube.com/watch?v=cj8dDTHGJBY

This video was taken from the crash course Youtube channel and it is about cells , animal cells to be precise. The video contains 10 main points as seen in the recap at 11:23 in the video. The first point in the video deals with Robert Hooke , the scientist who did the first research on cells , this is a good strategy , it employs history as a tool in the learning process , and gives a background to the topic at hand. The second point deals with cilia and flagella and discusses how in certain cells , they are used for movement. The video gives examples of human cells which have cilia , ie lung cells and human cells which have flagella ie sperm cells , this gives the video a more relatable tone. The third point discusses the cell membrane and it is at this point that the video starts describing the cells as a type of city , run by a dictatorship , this helps the viewer develop  a better idea of the topic. Describing cells as a city or country seems to be a very popular tool in teaching this topic as I have seen many videos employing this very technique. Points five to nine goes into the various organelles that can be found within a cell , endoplasmic reticulum both smooth and rough which take part in steroid synthesis and protein synthesis , ribosomes which can attach to mRNA, golgi apparatus which transports proteins and enzymes , lysosomes molecules which break down molecules within the cell  and the nucleus which contains the genetic layout of the cell. In the last point the host describes what he states as his favourite organelle , the mitochondria , the video discusses briefly the role of mitochondria which is to provide energy to the cell . During the last point the video also discusses the endosymbiotic theory , which states that organelles such as mitochondria were once free living organisms and were engulfed by other organisms , the video also goes into the evidence of this, being that mitochondria have their own DNA  , and also discusses how this information can be used to trace back family trees since the mitochondrial DNA within a child is identical the mitochondrial DNA in the mother.

Overall I enjoyed this video , however I do have some critiques about it , one such critique is that the video is not nearly as informative as a proper science video should be , I found it lacking in information. Another problem I had with the video was that it seemed to have very subjective tone used , meaning that a lot of opinions were used , another problem is that the video makes a lot of references to past videos , giving links every which way , this is confusing for a first time viewer of the channel and also means that someone will not be able to watch just that one video and have a decent understanding of cells. There were also things that I did quite like , for one the style of the video  is very visual , there are a lot of pictures and video clips of animals and even animations showing how certain parts of the cells work , this keeps the attention of the viewer and would make them more likely to watch the entire thing . Also the fact that the video is short , encourages people to watch the video.

In conclusion , although the video was very entertaining with its animations and  clips , it must be said that it lacked heavily in substance and does not fully explain how the cells works or even the proper functions of the organelles, therefore I would not recommend this video to a biochemistry student as they would find it non informative. I think the target audience for this video would be to a form 1 class of students who are just starting to learn about science , as it gives a simplistic and elementary view of the cell.

Advertisements

Posted on April 7, 2013, in Uncategorized and tagged , , , , . Bookmark the permalink. Leave a comment.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: