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AS Biology P1 MCQs Preparation Thread
Its basically water potential = solute potential + pressure potential where solute potential is always NEgATIVE and pressure potential is always POSITIVE -
AS Biology P1 MCQs Preparation Thread
Thanks a lot :) As for 39, shouldn't the efficient for the decomposition of the producers and consumers be the highest because, after all, unlike feeding by animals, the decomposes take all the mass of the organism while animals may leave out parts such as fur, bark, roots or hooves? On 40... -
AS Biology P1 MCQs Preparation Thread
Oops. Sorry* I hate typing on phones! -
AS Biology P1 MCQs Preparation Thread
Moola, sorry! Variant 1 for both -
AS Biology P1 MCQs Preparation Thread
Can someone please EXPLAIN The following questions (I have the marking schemes so I am not asking for answers but explanations): May/June 2010, question 23 October/November 2010, Questions 39 and 40 I want someone to explain how you reach the answers. Thanks! :) -
AS Biology P1 MCQs Preparation Thread
lol read the questions again. Even though the choices are the same, the diagram is the same, the question is different. -
AS Biology P1 MCQs Preparation Thread
Hey I checked. You're right. It's wrong on the uploaded paper. Scandalous! :sneaky: -
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AS Biology P1 MCQs Preparation Thread
I've found a mistake in a question - I think. Question # 39 : http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w10_qp_11.pdf The answer is A according to the mark scheme. But this is what the examiner report says (and honestly, it... -
AS Physics P1 MCQs Preparation Thread.
Variant for N 09? J10) 8 - There is constant acceleration at first. Hence there is supposed to be a curved region on the displacement-time graph. A can be eliminated. Height can not increase with time, D can be eliminated. The steel ball will either reach a terminal velocity or continue with... -
AS Physics P1 MCQs Preparation Thread.
In air, the frequency would remain the same. Now do it yourself. :coffee: -
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AS Physics P1 MCQs Preparation Thread.
The couple produced in Q has forces acting on the upper belt (towards the right) and in the center of the motor (towards the left). The force does not act on the lower belt as the lower belt is slack (which woudl not have been the case if a force was acting on it). Hence torque by Q = 3.0 Nm =... -
AS Biology P1 MCQs Preparation Thread
It's not C because athletes, who have greater cardiac outputs, have a lower blood pressure. Hence it can't be C or D. Also, greater cardiac output = more oxygen supplied to muscles = more carbon dioxide taken in. I don't know why the impulses in the vagus nerve wouldn't increase. :oops: The... -
AS Biology P1 MCQs Preparation Thread
Obviously, nucleolus. This is because the ribosomes are made inside the nucleolus. There's no real fixed size. They can be big or small. But they're pretty conspicuous structures inside chloroplasts. -
AS Biology P1 MCQs Preparation Thread
In 9th, Option D has no carbons which can attach to another carbon in the molecule (all the carbons have octet configurations in terms of chemistry) In 17th, mitosis only helps in cell division. It doesn't help in the growth (increase in size) of the cell. Hence it's B. Just to make it clear... -
Transit of Venus tomorrow
lol no... go to the link it'll give you the details for your country For my place (Riyadh) it'll be visible from sunrise to 7:54am. The point of saying 'during the day' was to make clear you wouldn't be able to see it at night. :p -
Transit of Venus tomorrow
As some of you may already tomorrow is going to be the transit of venus (over the sun). It'll appear as a black dot on the sun when it's happening. This is a very rare phenomena so don't miss it. The next one will happen in 2117! The following link gives the exact details of the times... -
AS Physics P1 MCQs Preparation Thread.
Wait... what? How? :O Elaborate.