biology paper 1 doubts

[♥Яαηõõşḧ♥]

why is sucrose rather than glucose is transported by phloem?
what did you guys answer for this question?

Sucrose is a non reducing sugar so it is unreactive.. I think it was something like that.... The answer was D

 

[♥Яαηõõşḧ♥]

hey which organelle can be seen in light microscope by using 400x ??
cristae of mitochondira?lysosomes?nuclei or grana of chloroplast/

Nuclei

 

[ZohaibAsad]

Yup, its suppose to be glycolipids.
The only structural difference between glycolipids and phospholipids is the head. In phospholipids, the head is a phosphate group; while in glycolipids, the head is a glucose mol. The tails are lipids in both. The tails could be unsaturated lipid chains, increasing kinks, and thereforre making the membrane more fluid.
Whereas, the cholestrol, just "maintains" the rigidity. Increasing cholestrol, doesnt necessarily mean that the fluidity would increase.

Phospholipids wasnt one of the options, so glycolipid has to be correct.

The role of glycolipids is to act as receptors not membrane fluidity regulators. You can double verify it for yourself in the functions of membrane structures in mary jones. Answer is cholestrol

 

[xtremeforums]

Nop! its cholestrol! it was a past-ppr question!

I did all pastpaper questions, and didnt come across this ques. Do u mind telling me which year it was in?

 

[xtremeforums]

The role of glycolipids is to act as receptors not membrane fluidity regulators. You can double verify it for yourself in the functions of membrane structures in mary jones. Answer is cholestrol

Yah true, it might not be its main function. But what i said does make sense...
In Mary Jones' book, it doesnt say that cholestrol increases the fluidity either.

It doesn't matter now anyway... Let's just hope for a low curve.
InshAllah we'll all get A's!

 

[♥Яαηõõşḧ♥]

Yah true, it might not be its main function. But what i said does make sense...
In Mary Jones' book, it doesnt say that cholestrol increases the fluidity either.

It doesn't matter now anyway... Let's just hope for a low curve.
InshAllah we'll all get A's!

Exactly we can't change anything now, ISA hope the best for everyone !!!

 

[TCHS]

Nuclei

Wasn't the option Nucleolus or Nucleoli not nuclei?? :/

 

[xtremeforums]

Wasn't the option Nucleolus or Nucleoli not nuclei?? :/

Nuclei is the plural form of nucleus.

 

[TCHS]

Nuclei is the plural form of nucleus.

Lol I'm aware of that. I said wasn't the option saying NucleoLUS which is inside the nucleus?

 

[xtremeforums]

Lol I'm aware of that. I said wasn't the option saying NucleoLUS which is inside the nucleus?

I dont remember all the options.
but the correct one has to be nuclei, because a nucleolus is not visible with a light microscope.

Im sorry if i still havnt answered your question..

 

[niya15]

it was nuclei not nucleolus....n i ask my teacher n he said the answer was cristae of mitochondria

 

[♥Яαηõõşḧ♥]

it was nuclei not nucleolus....n i ask my teacher n he said the answer was cristae of mitochondria

Cristae of the mitochondria cannot be seen witha a light microscope only an electron microscope and the case is the same with grana of chloroplasts and lysosomes.... The nucleoli can be seen with the light microscope

 

[yazan1995]

it was nuclei not nucleolus....n i ask my teacher n he said the answer was cristae of mitochondria

your teacher should stop teaching if she really told you that the answer is cristae of the mitochondria

 

[yazan1995]

which is a description of amylopectin and glycogen ? all of the statements were correct ryt ?

 

[xtremeforums]

which is a description of amylopectin and glycogen ? all of the statements were correct ryt ?

The options were:
1. alpha glucose
2. 1.4 bonds
3. 1.6 bonds

Right?
If yes, then they all were correct..

 

[Idolfanatic95]

it was nuclei not nucleolus....n i ask my teacher n he said the answer was cristae of mitochondria

It was a past paper ques. The answer Was C nuclei or whtever it was

 

[♥Яαηõõşḧ♥]

which is a description of amylopectin and glycogen ? all of the statements were correct ryt ?

Yup all three

 

[L-Girl]

It's glycolipids

are you sure?

 

[xtremeforums]

Now, that we all know how many mistakes we've done... And how hard the paper actually was..
I wouldn't say "hard", but it sure was tricky.
Have your thoughts about the high grade thresholds changed?
Any reasonable grade thresholds anyone??

 

[yazan1995]

Now, that we all know how many mistakes we've done... And how hard the paper actually was..
I wouldn't say "hard", but it sure was tricky.
Have your thoughts about the high grade thresholds changed?
Any reasonable grade thresholds anyone??

hmmm it's really difficult to judge but i guess 32/40 for an A