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AS Biology P1 MCQs Preparation Thread

Haniya Khan

Haniya Khan

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Haniya Khan

Haniya Khan

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HuN3yy !!

HuN3yy !!

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17 In which process does mitosis not have an important role in living things?
A asexual reproduction
B growth of cells
C increase in size
D repair to damaged tissues

The answer is B ...why ?????????????????????????????????? plzzzzz anybody explain
rogue94
 
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Nibz

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HuN3yy !! said:
17 In which process does mitosis not have an important role in living things?
A asexual reproduction
B growth of cells
C increase in size
D repair to damaged tissues

The answer is B ...why ?????????????????????????????????? plzzzzz anybody explain
rogue94
Click to expand...

Examiner's wordings, "The growth of cells does not involve mitosis, whilst an increase in size of living things would involve mitosis to produce more cells."
 
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rogue94

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HuN3yy !! said:
17 In which process does mitosis not have an important role in living things?
A asexual reproduction
B growth of cells
C increase in size
D repair to damaged tissues

The answer is B ...why ?????????????????????????????????? plzzzzz anybody explain
rogue94
Click to expand...
There is a fine line between growth of cells and growth of tissues. Mitosis causes growth of tissues by increasing cell numbers; it does not cause the growth of a cell itself! :) It's important to understand that mitosis causes growth and repair of tissues, not growth and repair of cells!
 
biba

biba

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Haniya Khan said:
http://www.xtremepapers.com/papers/...nd AS Level/Biology (9700)/9700_w09_qp_12.pdf
MCQ 24 AND 40 PLS.
http://www.xtremepapers.com/papers/...nd AS Level/Biology (9700)/9700_s10_qp_13.pdf
mcqs 2, 6, 17 and 34! Y THE ANSWER OF MCQ 2 IS NOT B?
http://www.xtremepapers.com/papers/...nd AS Level/Biology (9700)/9700_w10_qp_12.pdf
MCQ 4
http://www.xtremepapers.com/papers/...nd AS Level/Biology (9700)/9700_w10_qp_11.pdf
MCQ 5
HELP PLSSSSSSSSSSS
Click to expand...
2009
mcq 24)this one is really simple,the answer can only b A bcuz B & D has the base URACIL in it so they r not DNA while C shows the attachment of nucleotides of both the templates in the same direction,while one template is replicated in 5'-3' and the other one is replicated in 3'-5'direction
mcq 40) i m confused abt this 1
2010/13
2) answer cannot b B or C bcuz the graph shows that the enzyme takes more time for the reaction at the potimum temperature while it shld take the least time at this temp.and D is also wrong bcuz it shows that the enzyme is NOT completely denatured at 50 degree celsus...
6)is it D? IF it is than i dunno how cuz i hav a realy stupid theory abt it...
17) i think that the aswer is B.bcuz Q,R and S shows the pressure in the ventricle when the blood flws in it.
34) sorry i hav no idea abt it
2010/12
4) for my convenience i converted all the measurements in metres:
eukaryote= 1.5 x 10^1 um = 1.5x10^-5 m
prokaryote= 7.5x10^2 nm = 7.5 x 10^-7
the line is 1 cm or 0.01 m long
no. of W.B.C = 0.01 / (1.5 x 10 ^-5) = 6.7 x10^2
no. of streptococcus = 0.01 /(7.5 x 10^-7) = 1.3 x 10^4
2010/11
5) confused!
 
stella123

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can anybody help me with ques no 28 and 40 of oct/nov /12/2009 and ques 40 of oct/nov/07.........and plz do tell me that what conditions are necessary for nitrifying and denitrifying bacteria ...........there is not much info about them in mary jones...............
 
HuN3yy !!

HuN3yy !!

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rogue94 said:
There is a fine line between growth of cells and growth of tissues. Mitosis causes growth of tissues by increasing cell numbers; it does not cause the growth of a cell itself! :) It's important to understand that mitosis causes growth and repair of tissues, not growth and repair of cells!
Click to expand...
Thanks A Lot :)
 
Haniya Khan

Haniya Khan

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biba said:
2009
mcq 24)this one is really simple,the answer can only b A bcuz B & D has the base URACIL in it so they r not DNA while C shows the attachment of nucleotides of both the templates in the same direction,while one template is replicated in 5'-3' and the other one is replicated in 3'-5'direction
mcq 40) i m confused abt this 1
2010/13
2) answer cannot b B or C bcuz the graph shows that the enzyme takes more time for the reaction at the potimum temperature while it shld take the least time at this temp.and D is also wrong bcuz it shows that the enzyme is NOT completely denatured at 50 degree celsus...
6)is it D? IF it is than i dunno how cuz i hav a realy stupid theory abt it...
17) i think that the aswer is B.bcuz Q,R and S shows the pressure in the ventricle when the blood flws in it.
34) sorry i hav no idea abt it
2010/12
4) for my convenience i converted all the measurements in metres:
eukaryote= 1.5 x 10^1 um = 1.5x10^-5 m
prokaryote= 7.5x10^2 nm = 7.5 x 10^-7
the line is 1 cm or 0.01 m long
no. of W.B.C = 0.01 / (1.5 x 10 ^-5) = 6.7 x10^2
no. of streptococcus = 0.01 /(7.5 x 10^-7) = 1.3 x 10^4
2010/11
5) confused!
Click to expand...

THANKUUUUU =))))))
 
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