HI FREINDS HOW WAS THE PHYSICS ATP GCSE O LAVEL?

[Fate0]

Chill out, now. ATP has only 20% percentage. Lets focus on the P2. But my teacher says it's gonna be hard

 

[Dark Destination]

Chill out, now. ATP has only 20% percentage. Lets focus on the P2. But my teacher says it's gonna be hard

Okay, one last thing.
What was the answer to the first question in Biology atp..
About membranes, and the cabbage plant, and the water becoming green.

Was it something to do with chlorophyll?

 

[Dark Destination]

Equal Weight = Equal Mass. It's understood.

W=MG.

G is the same, as it's operating under same gravitational force.

Hope they read my entire paragraph and give me the mark. .-.

 

[Fate0]

Okay, one last thing.
What was the answer to the first question in Biology atp..
About membranes, and the cabbage plant, and the water becoming green.

Was it something to do with chlorophyll?

You had to say that the membranes were destroyed and did not control the passage of substances. As a result chlorphyll diffused out.

 

[Dark Destination]

Obviously. Boil it. Phospholipid layers of memberane (that's what I think I wrote) dissolve. Makes memberane more permeable. C'plasts diffuse out.

Chloroplasts diffuse out?

Do you remember the starch test on leaves.

We have to BOIL the leaf in water first to remove cuticle.

Didn't we have to mention CUTICLE in this answer too?

 

[Dark Destination]

You had to say that the membranes were destroyed and did not control the passage of substances. As a result chlorphyll diffused out.

But Chlorophyll is only soluble in Alcohol, not water.

That is why we BOIL A LEAF IN ALCOHOL to decolourize it

 

[Fate0]

But Chlorophyll is only soluble in Alcohol, not water.

That is why we BOIL A LEAF IN ALCOHOL to decolourize it

Dont think how else the water would become green.

 

[Dark Destination]

Dont think how else the water would become green.

Some people are saying the cells contents came out or something. But how is that even possible?
Why did the cell membrane allow that?

When we boil a leaf in water before starch test, the water doesn't become green. But now we boil a cabbage plant, and the water became green. .-.

 

[Fate0]

Some people are saying the cells contents came out or something. But how is that even possible?
Why did the cell membrane allow that?

When we boil a leaf in water before starch test, the water doesn't become green. But now we boil a cabbage plant, and the water became green. .-.

Uh im so sure cell's contents arent green.

 

[Dark Destination]

Uh im so sure cell's contents arent green.

Then if chlorophyll isn't soluble in water, how did the water turn green

I wrote that the Cuticle is removed. No one mentioned the cuticle.
And then they said cabbage plant is put in CLEAN water, they made CLEAN bold.
So i though maybe the water moves into the cells too, making them turgid or something.

 

[Fate0]

Then if chlorophyll isn't soluble in water, how did the water turn green

I wrote that the Cuticle is removed. No one mentioned the cuticle.
And then they said cabbage plant is put in CLEAN water, they made CLEAN bold.
So i though maybe the water moves into the cells too, making them turgid or something.

That still doesnt explain why the water became green.

We'll have to wait for the MS/find a teacher for the answers. :3

BTW, How did you approach that experiment (last question)? What were we supposed to do with the filter paper?

Cut the filter paper into small disc and then soak them in water.

 

[FLRNAB]

Fate0

Question 1 part b. How to measure Length L correctly.

I said immerse the rule into the water as zero mark co-incides with the water level.
And then align it vertically with rod, and use set-square to find the answer. I also drew all this apparatus on the figure.

EVERYONE HAS A DIFFERENT WAY.

Someone is using a cobalt chloride paper.
Someone is pulling out the rod, and marking the water prints.
Someone is marking the beaker.
Someone is inserting the rule on the side.

Is my answer right?

1) Measure the height of water in beaker by placing a meter rule on the beaker
2) Take out the rod and measure the level of water on it
3) Subtract 2 from 1
If you immerse the ruler you create parallax errors and ruler has dead space as well so high chances of inaccuracy. Also the rod will move and to keep at at a place you have to apply force creating more errors.

 

[Dark Destination]

We'll have to wait for the MS/find a teacher for the answers. :3

BTW, How did you approach that experiment (last question)? What were we supposed to do with the filter paper?

I said place the wet filter paper on the seeds.

 

[Dark Destination]

1) Measure the height of water in beaker by placing a meter rule on the beaker
2) Take out the rod and measure the level of water on it
3) Subtract 2 from 1
If you immerse the ruler you create parallax errors and ruler has dead space as well so high chances of inaccuracy. Also the rod will move and to keep at at a place you have to apply force creating more errors.

So all other answers are wrong?

 

[Dark Destination]

1) Measure the height of water in beaker by placing a meter rule on the beaker
2) Take out the rod and measure the level of water on it
3) Subtract 2 from 1
If you immerse the ruler you create parallax errors and ruler has dead space as well so high chances of inaccuracy. Also the rod will move and to keep at at a place you have to apply force creating more errors.

Btw, what you described doesn't lead to the length they wanted. They asked for length of rod outside water. You're subtracting the length of rod immersed from the length of water

 

[FLRNAB]

So all other answers are wrong?

Yeah they said 'accurately'.

 

[Dark Destination]

Yeah they said 'accurately'.

But your answer doesn't even give the length L.

There is no accurate way to find the length. Accuracy doesn't exist where humans are involved. The exact value can never be found.
But the EXAMINERS Wanted to test how far we can propose a way to find accurate length L.

The students gave different responses.

 

[FLRNAB]

Btw, what you described doesn't lead to the length they wanted. They asked for length of rod outside water. You're subtracting the length of rod immersed from the length of water

That's what my friends are saying but graph was of Length L and Number of bands. When Bands is 11 then Length is 0 so they wanted from bottom to rod.

 

[Fate0]

That's what my friends are saying but graph was of Length L and Number of bands. When Bands is 11 then Length is 0 so they wanted from bottom to rod.

Uh my friend, it read "Length, L above the water. "

 

[DaniyalK]

1) Measure the height of water in beaker by placing a meter rule on the beaker
2) Take out the rod and measure the level of water on it
3) Subtract 2 from 1
If you immerse the ruler you create parallax errors and ruler has dead space as well so high chances of inaccuracy. Also the rod will move and to keep at at a place you have to apply force creating more errors.

That would give the height of water under the rod.