A level Biology: Post your doubts here!

[DeViL gURl B)]

Ye

But the maximum rate of reaction would occur without the inhibitors and that has a constant value :S

Yeah that is when no inhibitor.and the substrate has finished

 

[DeViL gURl B)]

Ye


Yeah that is when no inhibitor.and the substrate has finished

Or .. The all the active sites are filled

 

[♣♠ Magnanimous ♣♠]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s13_qp_11.pdf

Question 4 ?

It c because the radius of the circle covers 50 eyepiece divisions and 100 um is 40 eyepiece graticule divisions so 50/40 x 100 is 125

 

[BeBeskii108]

But if the substrate concentration doesn't increase then neither does the maximum RATE of reaction right? I'm sorry it's a little confusing, cause noncompetetive inhibitors don't reduce the MAXIMUM rate of reaction either

I think so.

 

[♣♠ Magnanimous ♣♠]

 

[Sarah_3420]

guys can u tell me why no.1 2006 october november Paper 1 is B? please help

 

[♣♠ Magnanimous ♣♠]

 

[Snowysangel]

View attachment 41560

C cause chloroplasts are membrane bound organelles

 

[DeViL gURl B)]

View attachment 41560

1 ,3 and 4 is the answer that is C

 

[♣♠ Magnanimous ♣♠]

1 ,3 and 4 is the answer that is C

why?

 

[♣♠ Magnanimous ♣♠]

C cause chloroplasts are membrane bound organelles

ok.

 

[thats_me]

View attachment 41560

Is it c?

 

[♣♠ Magnanimous ♣♠]

yeah

Is it c?

 

[DeViL gURl B)]

why?

Cuz prokaryotes don't have cellulose in there cell wall.. They've got Murein and peptidoglycan in there cell wall

 

[♣♠ Magnanimous ♣♠]

Cuz prokaryotes don't have cellulose in there cell wall.. They've got Murein and peptidoglycan in there cell wall

hey i forgot that, thanks..

 

[DeViL gURl B)]

hey i forgot that, thanks..

U're welcome

 

[thats_me]

View attachment 41561

d? Convert 2 cm to micrometer I.e 20000
So 1 RBC is 7 micrometers
How many can fit in 20000 micrometers
20000/7 = 2857 I.e 2.9*10^3

 

[♣♠ Magnanimous ♣♠]

d? Convert 2 cm to micrometer I.e 20000
So 1 RBC is 7 micrometers
How many can fit in 20000 micrometers
20000/7 = 2857 I.e 2.9*10^3

lol... i tried to convert the mew in cm..

 

[Exo_luhan]

http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w11_qp_11.pdf

Q14?? sum1 plz explain

 

[Exo_luhan]

http://papers.xtremepapers.com/CIE/...nd AS Level/Biology (9700)/9700_w11_qp_11.pdf


Q24 answer is C bt how???