Bio ATP 2014

[Master Killer]

Hello people, there was a question in today's Bio paper (for 1 mark indeed!) relating the test for confirming that the diagram in the picture given was truly a fruit. So please can anyone suggest possible correct answers for this question?

 

[TheJinchuuriki9]

Dissect the fruit and look for structures such as seeds

 

[Faadi1997]

Sir, today was a question in the bio atp related to boiling of cabbage, so where did that green colour come from?
It cant be chlorophyll because it dissolves in ethanol only!

 

[TheJinchuuriki9]

Sir, today was a question in the bio atp related to boiling of cabbage, so where did that green colour come from?
It cant be chlorophyll because it dissolves in ethanol only!

Plus cabbage doesnot photosynthesise
I think that it is its characteristic colour like a dye which diffuses out of the denatured membrane

 

[ahmadr16]

Plus cabbage doesnot photosynthesise
I think that it is its characteristic colour like a dye which diffuses out of the denatured membrane

It was not about chlorophyll ..it was about the cell membrane... The cell membrane becomes fragile when heated a lot...the cell membrane in that case broke and the cell contents came out into the boiling water...the cell contents were green... As simple as that...
By the way.., what was the answer of that part in which we had to suggest what should be kept the same when experimenting with oil?...??...?.. I realllly want to know that

 

[Laibaaa]

not allowed to discuss. will tell you after 24 hours.

 

[Dark Destination]

The answer to that cabbage green part?
It had to be chlorphyll. Because CHLOROPHYLL is what makes plants green. It is the GREEN PIGMENT. Nothing else is green!

I wrote that due to boiling with water, cuticle will be removed, and water will move into the cells and stuff. :3

 

[Dark Destination]

Hey

How did the cell contents come out? How is it possible? Why did the cell membrane allow that? How is that even possible?

When we boil a leaf in water, before starch test, nothing like that happens.
When we boil it in ALCOHOL, it gets de-colourized.

So here we boiled cabbage in water, and it gave a green color to the water :/

 

[Fate0]

How did the cell contents come out? How is it possible? Why did the cell membrane allow that? How is that even possible?

When we boil a leaf in water, before starch test, nothing like that happens.
When we boil it in ALCOHOL, it gets de-colourized.

So here we boiled cabbage in water, and it gave a green color to the water :/

Cell membrane becomes wholly permeable after getting destroyed.

 

[Dark Destination]

Cell membrane becomes wholly permeable after getting destroyed.

So it allows even the nucleus to come out? The vacuole? Are you saying such components come out?

 

[ovoxotillweoverdose]

What did you guys write in the last question about the experiment of observing seed crowding whatever

 

[ovoxotillweoverdose]

And the two features about the dispersion of leafe fruit diagram?? I wrote thin petiole and large surface area/flat shape..

 

[Faadi1997]

Guys its just that when we heat the cell in boiling water, its cell membrane gets denatured and turns from partially to fully permeable which means that cytoplasm comes out by diffusion and the colour of the cytoplasm is green
AND THIS IS THE CORRECT ANSWER

 

[Fate0]

Guys its just that when we heat the cell in boiling water, its cell membrane gets denatured and turns from partially to fully permeable which means that cytoplasm comes out by diffusion and the colour of the cytoplasm is green
AND THIS IS THE CORRECT ANSWER

The colour of cytoplasm is not green. It looks green due to presence of chlorophyll in chloroplasts.

 

[Mazin Junaid]

I wrote the same thing as Faadi magar at the end mntioned that the membrane thatholds the contents of the chloroplast were also damaged which allowed the green pigmented chlorophyll to diffuse out

 

[Mazin Junaid]

Btw how did you guys do the graph? Did you make a curve connecting all the points ya phir a curve of best fit?

 

[Laibaaa]

connecting curve cos question didn't say best fit curve. :s

 

[Mazin Junaid]

connecting curve cos question didn't say best fit curve. :s

Well that's a relief

 

[Abdul Hanan]

for the question about the boiling i wrote
"when cabbage placed in water, water enter cells so they become turgid.during boiling,the enzymes denatures and partially permeable membrane damages resulting to cell contents containing chloroplasts which contain chlorophyll(a green pigment) come out of cell making water green"
any chance this is correct?

 

[Mazin Junaid]

for the question about the boiling i wrote
"when cabbage placed in water, water enter cells so they become turgid.during boiling,the enzymes denatures and partially permeable membrane damages resulting to cell contents containing chloroplasts which contain chlorophyll(a green pigment) come out of cell making water green"
any chance this is correct?

I don't know about the denaturing wala part but apart from that I think its correct