kingpomba's question thread

[slothpomba]

No answers?

Anyway some more...


What are your opions on these
*List 2 similarities and 2 differences between plant and animal hormones

*A seedling was grown in the dark but with a light source towards the left. What kind of response would occur (or something similar to this).

I think they were aiming for phototropism maybe... but if its below the soil idk... maybe if it has sprouted shoots?

Ideas?

[slothpomba]

Time to resurrect this thread...

How would you guys go about this one (im interested in your thought processes about how you analyse it more so than the answer)... i messed it up (silly mistake i guess)

[stonecold]

Time to resurrect this thread...

How would you guys go about this one (im interested in your thought processes about how you analyse it more so than the answer)... i messed it up (silly mistake i guess)

(Image removed from quote.)

X linked dominant.  Male I-2 passes it on only to daughters, and all daughters are affected.  Female II-4 then passes on this allele to some of her children, both males and females.  III-3 and III-4

[slothpomba]

Yeah, i guess the thing i should take away from this is male offspring always get Y chromosome from their father and X chromosome from their mother and also that we wont be asked Y linked questions

It sucked to get that one wrong because all the questions after it kind of relied on the first answer... 1 mark out of 6 for the entire page

[Russ]

also that we wont be asked Y linked questions

Why not?

[stonecold]

Yeah, i guess the thing i should take away from this is male offspring always get Y chromosome from their father and X chromosome from their mother and also that we wont be asked Y linked questions

They could put a Y-linked question, but it might be too easy.  Some people could get confused though.

Important thing to note is in females, the father always gives an X-chromosome, but can't give it to males, so if one gender is affected and another isn't, then it is almost certainly X-linked.

They tell you it is dominant in the stem of the question too.

[masonnnn]

i have noticed that there seems to have been NO questions previously on y-linked.
i suppose it would just be really obvious with all males having it...

[stonecold]

i have noticed that there seems to have been NO questions previously on y-linked.
i suppose it would just be really obvious with all males having it...

you'd be surprised at how many would still manage to stuff it up...

[slothpomba]

also that we wont be asked Y linked questions

Why not?

My teacher said they would never ask us a Y linked question *shrug*

[slothpomba]

I really need to read stuff more carefully...


I just wrote recessive... couldnt work out whether it was autosomal or sexlinked haha...thats what i get for skimming over chromosome 7  :buck2:

[slothpomba]

Did anyone actually learn ESR (Electron Spin Resonance)..... I didn't know what it was till i saw it in an exam and looked it up in the text book

How much knowledge you reckon i should have of the radiometric dating techniques...just the names or down to the small things like... in potassium argon dating, the ratio of potassium 39:potassium 40 is fixed, so they can work out the original amount of potassium 40 present and how much is left/ how much argon there is and work out how old the sample is

A+ notes just mentions the name and that it

[slothpomba]

Could someone maybe explain what a liposome is too

[stonecold]

Did anyone actually learn ESR (Electron Spin Resonance)..... I didn't know what it was till i saw it in an exam and looked it up in the text book

How much knowledge you reckon i should have of the radiometric dating techniques...just the names or down to the small things like... in potassium argon dating, the ratio of potassium 39:potassium 40 is fixed, so they can work out the original amount of potassium 40 present and how much is left/ how much argon there is and work out how old the sample is

A+ notes just mentions the name and that it

DW about electron resonance.

Just know that C14 dating is for fossils less than 50k years, whilst K-Ar is for much older fossils.

[slothpomba]

Cheers, thanks a lot mate

[masonnnn]

Also know how the half-lives of the radiometric data work and how to explain them. Though seeing you do methods i'm guessing that's no problem aha.

and i think a liposome is just a lipid-based vector. shouldn't need much more detail than that. most would be a question like "what vector could be used" and you could write liposome as one of the many answers.