• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

AS Biology P1 MCQs Preparation Thread

N

Nibz

XPRS Moderator
Messages
4,615
Reaction score
9,574
Points
523
JulyMei said:
but i dont get it.. sorry..
Click to expand...
It's more of a common fact, really. The lower the pulse rate, the more physically fit you are.
Low pulse rate means your heart can pump a lot of blood each time it beats.
Learn this fact. Don't go into much details.
 
JulyMei

JulyMei

Messages
122
Reaction score
28
Points
28
Nibz said:
It's more of a common fact, really. The lower the pulse rate, the more physically fit you are.
Low pulse rate means your heart can pump a lot of blood each time it beats.
Learn this fact. Don't go into much details.
Click to expand...

oh.. okok.. thanks..
 
N

Nibz

XPRS Moderator
Messages
4,615
Reaction score
9,574
Points
523
confused123 said:
m/j 2008
20 and 24
Click to expand...
Q20. During metaphase, the sister chromatids are held together by the centromere, i.e the "Distance between
centromeres of sister chromatids" = 0, which is shown by curve 2. So B and C are eliminated.
Secondly, "distance between poles of spindle" is more or less the same throughout which is shown by curve 3.
"Distance between centromeres and poles of spindle" decrease during anaphase -> shown by curve 1
So A is the answer.

Q24. There is nothing to explain here. Codons of mRNA pair up with complementary anticodons of tRNA. Do the rest.
 
JulyMei

JulyMei

Messages
122
Reaction score
28
Points
28
Amaryllis said:
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s11_qp_12.pdf Q17 please :)
and
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s08_qp_1.pdf Q19
Click to expand...

17) Water will moves into cell, making cell more turgid. When a cell is turgid, water potential is zero. So, eventually pressure will be more positive. 19) the number of chromosomes shown in the diagram is haploid. They want diploid, so just times 2.. 20 X 2 = 40. Answer is C.
 
egy

egy

Messages
292
Reaction score
66
Points
38
R

raamish

Messages
373
Reaction score
33
Points
28
egy said:
OK

- for Qns 3 i don't have any idea about it

- in Qns 15 the enzymes are protein so proteases breaks enzymes

- answer is B because it shows that the haemoglobin is soluble so it is a globular protein

i wish that helps .
Click to expand...


yeh it helped thnx. In 13 when its sayign a hydrophilic group its saying that haemoglobin is soluble and globular proteins are all soluble right??
 
A

Amaryllis

Messages
129
Reaction score
39
Points
38
JulyMei said:
17) Water will moves into cell, making cell more turgid. When a cell is turgid, water potential is zero. So, eventually pressure will be more positive. 19) the number of chromosomes shown in the diagram is haploid. They want diploid, so just times 2.. 20 X 2 = 40. Answer is C.
Click to expand...
thank u :D i thought the diploid will be the half
 
xxfarhaxx

xxfarhaxx

Messages
249
Reaction score
90
Points
38
JulyMei said:
28) Trachea basically has everything. Cartilage, goblet cells, smooth muscle. while Alveolus is exactly opposite as trachea. It is only one cell thick with only endothelial cells. So, answer will be B. :) Im not sure with 22. sorry.
Click to expand...
bt alveolus has smooth muscles..isnt it??
 
You must log in or register to reply here.
Top