I know http://marie0993.wordpress.com/ already posted this and all credit to her, but this video and song is something students can actually remember in an exam so I think it should be shared and posted everywhere.
Props to the person that made this and much much gratitude to you.
I think you may have saved the GPAs of many a failing student
Aaaaaaaand the week this blog is due, I finally find the site that allows us to make wordles with cool shapes >_<
But better late that never so here’s on on Lipids, which is the topic we are currently on and is obviously coming in exams so knowing these words, their functions and properties and how they are formed would be in my best interest.
Fats are solid at room temperature ( generally saturated)
Oils are liquid at room temperature ( generally unsaturated)
Saturated Fats – No double bonds in the Carbon chain
Unsaturated Fats – At least 1 C=C in the Carbon chain (are all cis-isomers)
Trans-fatty Acids – created when polyunsaturated fats are hydrogenated. They have double bonds but exist in the trans-isomer state, thus being able to pack closesly together and form plaque build ups in the arteries
Linoleic acid – omega-6
alpha-Linolenic acid – omega-3
It’s a pig! Because, you know, bacon is full of fat
As you can probably tell, I am a fan of short educational videos.
The problem with them though is that they tend to have only the most basic knowledge concerning the topic so you don’t really get much out of them.
This particular video dealt with the most basic points on amino acids/proteins. It uses good visual aids so it makes the amino acid structure easy to remember (in 3D animation). It shows all 20 amino acids but only separates them into hydrophobic and hydrophilic groups when we know that they can be separated into: non-polar, polar uncharged, aromatic, positively charged and negatively charged amino acids due to their unique R groups.
It also illustrates quite well the formation of peptide bonds, the secondary structures of helices and sheets and the folding associated with the tertiary structures of proteins. However I do think they meant ionic interactions and not ionic bonds considering ionic bonds are very strong bonds.
Overall, the best use for tis video is to help with revising for or making multiple choice question because they layout everything in a very straight forward manner
This vidoe does a nice job of summarising the TCA cycle, AND it’s short. 🙂
Some things to note though:
1. The reaction between Oxaloacetate and Acetyl-CoA is irreversible.
2. The conversion of alpha-Ketaglutarate to Succinyl-CoA is also a irreversible reaction.
3. This is for ONE pyruvate molecule; Glycolysis produces 2 molecules of pyruvate. Therefore for one glucose molecule, the TCA cycle produces:
This reaction takes place in the matrix of the mitochondria except for the conversion of Succinate to Fumarate, which takes place in the inner membrane as this is where the enzyme Succinate Dehydrogenase is located.
The TCA Cycle
I know, I know; I’m quite late in writing these. They are quite easy and may not be completely unique but I do hope they are different to others’ questions.
There are six (6) questions. The first 4 are single answer questions. The final two are multiple answer questions. They focus on carbohydrates and proteins/amino acids. Have a go at them if you feel like it ^_^
Aldohexoses form 5 membered rings called:
Oxidation of __________________ in aldoses will give uronic acids.
- The aldehyde group
- The carbonyl carbon
- The anomeric carbon
- Carbon 6
- Carbon 2
Amino acids with a _______________ give a yellow colour in the Ninhydrin reaction.
- Sulphydryl group
- Aromatic group
- Secondary amino group
- Carboxylic grup
- Alkyl group
Peptide bonds are broken via:
- Acid hydrolysis
- Condensation reaction
- Cannot be broken
Select the correct multiple answer using ONE of the keys A, B, C, D or E as follows:
A. 1, 2 and 3 are correct
B. 1 and 3 are correct
C. 2 and 4 are correct
D. only 4 is correct
E. all are correct
Aldohexoses exist in cyclic form as:
- Are vegetable proteins
- Are derived from animal sources
- Is gelatine
- Contain all 10 essential amino acids
- Do not exist
Now, one would think a lactose intolerant person (aka me) would know all about how lactose intolerance works and get full marks in that question for an exam.
*smh* at myself
For the life of me. I can’t figure out how those people are making their wordles into such cool shapes so I’ll just keep it simple (and unfortunately slightly boring)