A Challenge Question! [May 2004] (1 Viewer)

[Survivor39]

A Challenge Question!

Hi Class of 2004, I want to make this forum more interesing by posting Challenging questions for you guys to try. Don't worry if you don't know the answer, they are for really smart Bio students doing the HSC

1. What is the difference between saturated fats and unstaturated fats?

Don't worry, this question is NOT in your syllabus

 

[Calculon]

Unsaturated fats contain double/triple bonds which can be broken to add extra hydrogen onto them. Saturated fats have no such double/triple bonds and as such contain all the hydrogen possible.

 

[queenie]

Originally posted by Calculon
Unsaturated fats contain double/triple bonds which can be broken to add extra hydrogen onto them. Saturated fats have no such double/triple bonds and as such contain all the hydrogen possible.

lol thats from chem ..
but yea.. saturated contain all single bonds, and :. contain all the hydrogen they can get. unsaturated will contain double/triple bonds, and therefore the amount of hydrogen present will not be the max it can hold.

lol, cal basically answered it for me im jus repeating everything

hey, survivor, u got any more q's?

 

[Calculon]

Is this something basic from a first year med topic?

Originally posted by queenie
lol thats from chem ..

Yeah thats how I knew as well

 

[Survivor39]

Originally posted by Calculon
Unsaturated fats contain double/triple bonds which can be broken to add extra hydrogen onto them. Saturated fats have no such double/triple bonds and as such contain all the hydrogen possible.

LOL. Calculon is going to top Bio this year.

Originally posted by Calculon
Is this something basic from a first year med topic?
Yeah thats how I knew as well

yeah....

Ok New question

What are centrioles used for in an animal cell?
And which organelle is present in animal cells but NOT in plant cells?

 

[Calculon]

1. Centrioles are the parts that the spindles come from during mitosis.
2. Centrioles.

 

[Survivor39]

Oops, let me make my questions more specific:

What ORGANELLES are present in animal cells but NOT in Plant cells.

Originally posted by Calculon
1. Centrioles are the parts that the spindles come from during mitosis.
2. Centrioles.

For 1, that's one of the function, there is another function for centrioles.
For 2, yes, and there is one more.

 

[Calculon]

No idea, I'll leave this for someone else who is smarter I think.

 

[Survivor39]

Originally posted by Survivor39

1. What is the difference between saturated fats and unstaturated fats?

Both Calculon and queenie answered correctly. To make the answer more biologically base, fat is made up of glyerol and three fatty acids, forming a triglyeride, or triacylglyerol. The fatty acids containg double/triple bonds makes fat unsaturate, and vice versa.

Saturated fats are SOLID (butter, lard) at room temperature, whereas unsaturated fats are LIQUID (oils) due to the presence of the double bonds.

 

[queenie]

Originally posted by Survivor39
Oops, let me make my questions more specific:

What ORGANELLES are present in animal cells but NOT in Plant cells.

2. arnt lysosomes only found in animal cells?

 

[xiao1985]

lolz ^^ we learnt abt saturated/ unsaturated fat in chem ^^

and yes, cal/queenie are right... a further note: their soluability is due to their geometrical shape of the molecule...

 

[Survivor39]

Originally posted by queenie
2. arnt lysosomes only found in animal cells?

Yep, you have got it!
Well done!

And for Question 1, Centrioles also help to organise microtubule assembly, they are not essential in all eukaryotes.

New Questions!
1. Before the Fluid mosaic model was introduced as the 'correct' model for cell membrane, what was the old model called?

2. Which two monosaccharides make up the disaccharide sucrose?

3 (HARD). In what way that the gluose molecules in starch differs from the glucose molecules from cellulose. (Hint: there is one difference)

 

[Calculon]

Originally posted by Survivor39
Yep, you have got it!
Well done!

And for Question 1, Centrioles also help to organise microtubule assembly, they are not essential in all eukaryotes.

New Questions!
1. Before the Fluid mosaic model was introduced as the 'correct' model for cell membrane, what was the old model called?

2. Which two monosaccharides make up the disaccharide sucrose?

3 (HARD). In what way that the gluose molecules in starch differs from the glucose molecules from cellulose. (Hint: there is one difference)

1. Davson-Danielli model
2. glucose and fructose
3. the arrangement of hydroxides/hydrogen. alpha-glucose which makes up starch has the pattern of down-down-up-down.beta-glucose which makes up cellulose has the arrangement of up-down-up-down

 

[Survivor39]

Originally posted by Calculon
1. Davson-Danielli model
2. glucose and fructose
3. the arrangement of hydroxides/hydrogen. alpha-glucose which makes up starch has the pattern of down-down-up-down.beta-glucose which makes up cellulose has the arrangement of up-down-up-down

Correct!

Calculon, you are too smart, I have to make up special questions for you!

1. How many naturally occuring amino acids are there? They are classified into how many groups?

2. Transport proteins are often called channels. Name two main types of channels.

To finish off with a relatively simple one, name the 4 main groups of macromolecules.

 

[CM_Tutor]

Originally posted by Calculon
3. the arrangement of hydroxides/hydrogen. alpha-glucose which makes up starch has the pattern of down-down-up-down.beta-glucose which makes up cellulose has the arrangement of up-down-up-down

For anyone who does the Forensic elective in Chemistry, or who is interested in carbohydrate structures, the term for the carbon involved in the hemiacetal functional group in cyclic sugars is the anomeric carbon. The
alpha-D-glucopyranose and beta-D-glucopyranose forms, differing in geometry at the anomeric carbon, are then termed anomers.

Originally posted by queenie
1. 20 different amino acids - wouldnt have a clue abt the groups though.

Amino acids are usually classified as acidic, basic or neutral depending on their side chain. For example, alanine, has a neutral side chain, histidine has a basic side chain, and aspartic acid has an acidic side chain.

 

[Calculon]

CM can you resolve an argument in the Maintaining a balance forum?

 

[CM_Tutor]

Originally posted by Calculon
CM can you resolve an argument in the Maintaining a balance forum?

What argument / thread? I can try if it's something that I know about, but remember that I'm a Chemist, not a Biologist, so I know the chemical side, rather than the biological.

 

[queenie]

Originally posted by CM_Tutor
What argument / thread? I can try if it's something that I know about, but remember that I'm a Chemist, not a Biologist, so I know the chemical side, rather than the biological.

i think calc's referin 2 the enantiostasis thread..

 

[CM_Tutor]

Calculon, if you were referring to the enantiostasis thread, then I'm not qualified to comment - that's really an argument about a biological, rather than a chemical,issue. Also, it looks like Survivor39 has resolved it.

 

[Survivor39]

Originally posted by Survivor39

Name the 4 main groups of macromolecules.

Answer:
Proteins, carbohydrates, lipids, and nucleic acids

Question:
Catabolism breaks down organic compounds to yield energy in the form of ATP. There are two ways to do so. Name them.