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http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w11_qp_11.pdf
question number 24: Answer is C (0.07s) why?? I thought answer would be B
I think that would be because amylase is an enzyme and enzymes are proteins by nature. The DNA maps out the basic protein formation and hence the answer is A. Hope I helped!Also number 22, answer is A (amylose)..why??
Please and thank you!
1: atrioventricular valves close (semi-lunar valves are closed too)Salam alaykum,
Can someone please help with this question.
I don't get this.. ;(
Thank you in advance
Mitochondria is larger than nucleolus. Check the May/June 2008 p1 number 1.I deduced after working the questions and from the cmbrdg bk that the sizes of the organelles are as such :Largest : Nucleus - chloroplst- GA- Nucleolus - mito - chloroplast grana -lysosome -ER - ribosome : Smallest. Is this order right ? Is chloroplst really bigger than mitochndria ? and is nucleolus larger than mitochondria or does it just stains more intensely ?
The leaf is more turgid in diagram 2 as the water potential is less negative in solution YWhy is the answer A ?? Where is the leaf turgid ? in diagrm1 or 2 ??View attachment 18189
Jazakallah. Thank You very very much!1: atrioventricular valves close (semi-lunar valves are closed too)
2: semi-lunar valves open (atrioventricular valves are still closed)
3: semi-lunar valves close (atrioventricular valves are still closed)
4: atrioventricular valves open (semi-lunar valves are still closed)
so we calculate this by step 2 minus step 1 which is 0.03s
step 4 minus step 3 is 0.04s
together its 0.07sec
Lol i ddmt realise it was turgid in 2 , i thought tht the more bent it is , the more it contains water . Okay thanksThe leaf is more turgid in diagram 2 as the water potential is less negative in solution Y
More negative = less water potential = more dissolved soluteshttp://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w11_qp_12.pdf
Please help me with question number 29..and what is meant by "more negative and less negative"?
ok thank you but what is the answer?More negative = less water potential = more dissolved solutes
Less negative = more water potential = less dissolved solutes (purer water)
I've fully explained this in one of my earlier posts yesterday, check somewhere around page 2 or 3.
so its : Nucleus - chloroplst- GA-mito- Nucleolus - chloroplast grana -lysosome -ER - ribosome -centriole : Smallest But nucleolus stains more easily on the microscpe than mito koz its compact with all the nucleic acid .Mitochondria is larger than nucleolus. Check the May/June 2008 p1 number 1.
Sucrose is actively transported to the phloem (B) from the leaves (mesophyll cells/A)ok thank you but what is the answer?
oh ok...thank you!Sucrose is actively transported to the phloem (B) from the leaves (mesophyll cells/A)
Sucrose is unloaded (taken in) near the roots (C and D).
So sucrose is most concentrated in the phloem near the leaves (B).
Higher concentration = more negative water potential.
So the answer is B.
Ribosome = 20 nm in prokaryotes and 22 nm in eukaryotesso its : Nucleus - chloroplst- GA-mito- Nucleolus - chloroplast grana -lysosome -ER - ribosome -centriole : Smallest But nucleolus stains more easily on the microscpe than mito koz its compact with all the nucleic acid .
Any other changes anyone?
Dipeptide = 2 amino acids7 What is the theoretical number of chemically different dipeptides that may be assembled from 12
different types of amino acids?
A 24 B 72 C 144 D 400
This is what i did 2 x 12 x 3=72 but the answer is C.... can anyone please explain this to me?
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