# WJEC BIOLOGY BY1 2016 (NEW AS) Thread Watch

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1. (Original post by Squashy_josh)
Okey but im not confident on the blood question and i forgot all about water properties so that sucks

Did you put leaf down as the tissue? and what order did you put the graphs in?
Oh the blood question got me to, took me like 10 minutes to figure out the graph!
No I put blood down as a tissue because i remember watching a Crash Course vid saying that was a tissue.
2. What were people's answers for the cell density calculation? I think there were 30,000 cells, they double every 19 hours and you had to calculate the density after four days?
3. (Original post by RasputinReborn)
What were people's answers for the cell density calculation? I think there were 30,000 cells, they double every 19 hours and you had to calculate the density after four days?
I rushed and got 150000.

24hrs x 4 days = 96hrs
96/19 = 5.05
5 * 30000 = 150000

wbu?
4. (Original post by valbrechts)
its the biggest ******** ive ever seen in my life. The amount of work ive put into revising the whole syllabus has gone to waste. I LITERALLY understand and memorized the whole unit but still struggled.

Here are some of my answers not in order: (simplified)

Sap Vacuole, Chloroplasts
Metaphase, Cytokinesis
1.5 x10^5 (the density question)
Other parts of the cell absorbed the stain which blocks light
cell wall is inelastic which opposes hydrostatic pressure when cytoplasm expands

PS DID ANYONE ELSE WRITE DOWN ATLEAST 4 OSMOSIS RELATED ANSWERS?
sap vacuole? i thought that but i could see a round shape underneath similar to that of a mitochondria cut on in alternate angle.
Also Its not Cytokinesis.It;s telophase. (look up telophase in google images).
And 1.5? really i had 950000. as 30000 to start with every 19 hours it doubles. So you find out it doubles 5 times in 4 days. (24*4/19) and do 30000*2^5.
Also other parts of the cell absorbed stain? can you explain. i thought the stain was meant for only Genetic material and nucleotide containing stuff. so you could c it in the ribosome etc.
And won't the cytoplasm contract when evaporation of water takes place , in the water the bacteria is living in?
Not saying you are wrong just comparing to what I got.
5. It was endocytosis, thats what the diagram depicted anyway
(Original post by valbrechts)
I missed that part out by accident but id imagine theyd be called the same things, transcription and translation
6. (Original post by valbrechts)
I rushed and got 150000.

24hrs x 4 days = 96hrs
96/19 = 5.05
5 * 30000 = 150000

wbu?
sorry mate its not 5*30000. as when it doubles it goes like 3>6>12 not 3>6>9>12. so it would be 2^5*30000
7. (Original post by valbrechts)
I rushed and got 150000.

24hrs x 4 days = 96hrs
96/19 = 5.05
5 * 30000 = 150000

wbu?
I had that, what did you label the organelles in that green thing? I think I wrote vacuole (but may have been nucleus idk) and chloroplast
8. Also did anyone else have biosensors. for the experiment improvement question
Also did anyone else have biosensors. for the experiment improvement question
I did biosensors and to use more specific pH values
10. (Original post by lemonandlime1)
I had that, what did you label the organelles in that green thing? I think I wrote vacuole (but may have been nucleus idk) and chloroplast
Did the same mate, though I typed up that species on the Internet and turned out it was an algae, so no permanent vacuole, chloroplasts was definitely right though
sorry mate its not 5*30000. as when it doubles it goes like 3>6>12 not 3>6>9>12. so it would be 2^5*30000
24x4 =96
96/19 =5.05(round to 5, so cells double 5x in that period)
30,000 to 60,000 to 120,000 to 240,000 to 480,000 to 960,000
12. Yes thats exactly what it is. And also yes its not vacoule and i thought nucleus would be too small therefore put mitochondria.
13. Did anyone take the resit with the old spec?
14. Such a piss take though. Spent 5 minutes trying to identify those organelles just to get 1 mark.... #ResitCrew
15. (Original post by Iloveclouds)
Did anyone take the resit with the old spec?
Meeee, how did you find it?
16. Anyone doing unit 1 chemistry tomorrow? Think it'll be as bad as this?
17. (Original post by Elljp33)
Anyone doing unit 1 chemistry tomorrow? Think it'll be as bad as this?
I am, have no idea how it will go but I doubt it can go any worse for me
18. Honestly never sat an exam that hard in my life. I fully understand it was a new spec but none of the questions asked made sense to what they wanted. There was no question similar to what was in the old spec and I think that was quite unfair.
19. (Original post by WJEC_corrupt)
Honestly never sat an exam that hard in my life. I fully understand it was a new spec but none of the questions asked made sense to what they wanted. There was no question similar to what was in the old spec and I think that was quite unfair.
I agree, even the specimen paper they made was nothing like that exam.
20. (Original post by Elljp33)
Anyone doing unit 1 chemistry tomorrow? Think it'll be as bad as this?
It'll certainly be tricky, but I don't know if it'll be as bad. They don't have as much freedom to make questions vague like biology. Some questions could be dodgy such as equilibrium in certain conditions (like the fizzy drink question I think). I'm hoping it won't be that bad though.

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