How was biology p32 (no discussion)

[Gummy Beat]

Not sure if there are any other variants left but just to be safe no discussion

 

[samantha liyanage]

how was it ?

 

[NinjaXM]

Question 2 was great, not so much for question one .
Is asking about the time it took for the first experiment considered a discussion ?
I mean some of my class mates and I got times that were almost one minute more than the rest .

 

[Exo_luhan]

dilution part, wat ws ur guys total volume each time?

 

[NinjaXM]

dilution part, wat ws ur guys total volume each time?

It had to be 20 every time, but then you take 10 for the next one so you're left up with 10 in each one except the 2.5% concentration which would be 20, but I assume that all the answers had to be 20 cm3 X% of C
By the way what was the time taken for the highest concentration ?

 

[Gummy Beat]

the highest concentration was like 17 seconds for me but most other people say it took 10-13 seconds

 

[Gummy Beat]

you also have to remember the time defers from lab to lab depending on milk and other things used

 

[Alex10]

the highest concentration was like 17 seconds for me but most other people say it took 10-13 seconds

I got 17s for 20% as well!

 

[Autumngirl]

What trend did you get? My time increased as concentration decreased. And how many layers were there in that plan diagram?

 

[NinjaXM]

What trend did you get? My time increased as concentration decreased. And how many layers were there in that plan diagram?

The trend is correct, the plan diagram according to what I know should have had 3 layers, the root cap at the bottom, the area of mitosis aka meristem, then the area of elongation , I am not sure of the proportions at all. Correct me if I am wrong I am not a teacher, you know.

 

[NinjaXM]

you also have to remember the time defers from lab to lab depending on milk and other things used

No I guess I did something wrong since some of my friends also got times less than 20s
But the ones next to me also got values that were greater than 2 mins ,
Btw what was the temp you used mine was 30

 

[Autumngirl]

The trend is correct, the plan diagram according to what I know should have had 3 layers, the root cap at the bottom, the area of mitosis aka meristem, then the area of elongation , I am not sure of the proportions at all. Correct me if I am wrong I am not a teacher, you know.

Yeah I drew the same things. Just wanted to make sure because it was really hard to distinguish between the different cells, not like the usual CIE slides.

 

[NinjaXM]

Yeah I drew the same things. Just wanted to make sure because it was really hard to distinguish between the different cells, not like the usual CIE slides.

I know, I couldn't see the limits of the region of mitosis without using the high power lens, and when I did so I couldn't see the right proportions because then it would show only cells and not the whole structure.

 

[Alex10]

What stages of mitosis did you guys label in Fig. 2.1?

 

[NinjaXM]

What stages of mitosis did you guys label in Fig. 2.1?

There was a clearly visible cell undergoing anaphase and another one undergoing metaphase

 

[$$AK$$]

What stages of mitosis did you guys label in Fig. 2.1?

There was a clearly visible cell undergoing anaphase and another one undergoing metaphase

In the first question did anybody get the time as more than 4 minutes ??!!

 

[oahmed64]

The values of the time are not important as long as it's following the trend which is increasing time with decreasing concentrations. Guys what did you write in the systematic error part?

 

[NinjaXM]

The values of the time are not important as long as it's following the trend which is increasing time with decreasing concentrations. Guys what did you write in the systematic error part?

i chose to write about the thermometer and how it might not be calibrated correctly then i explained how this will not affect the results since the same thermometer is used throughout the experiment.
but there are many other things you can write about i think.

 

[oahmed64]

i chose to write about the thermometer and how it might not be calibrated correctly then i explained how this will not affect the results since the same thermometer is used throughout the experiment.
but there are many other things you can write about i think.

I wrote the same but my teacher told me it's the syringe