I'm talking about this book if you don't know.
http://www.amazon.com/level-Biology-Cambridge-International-Examinations/dp/0521703069-
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biology paper 1 doubts
- Thread starter xtremeforums
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I'm talking about this book if you don't know.
http://www.amazon.com/level-Biology-Cambridge-International-Examinations/dp/0521703069Net primary productivity = energy absorbed - energy lost in respiration
energy absorbed = 1,000,000 - 990,000 = 10,000
energy lost in respiration = 5,000 (shown in the diagram)
Net primary productivity = 10,000 - 5,000 = 5,000
Percentage of light energy converted to net primary productivity = (5,000/1,000,000) x 100% = 0.5%
yup i know it,thanks but there's a newer edition and i was afraid that it might have written something different!!I'm talking about this book if you don't know.
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thank you!
oh really? wow, I didn't know that. o_o, well I hope they don't change their statement.
ohh thank you! I just realized the option said amylase, i misread it as amylose the whole time. -.-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!
Can't afford to make such silly mistakes in the actual exam..but thank you!
that's kinda confusing, because the answer is D. if it's directly proportional, shouldn't it be C? or there's a limit?
Also do you know why the answer to question 24 is C? Once again, thanks!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!
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Why B ???
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The stroke volume should logically increase when the volume of blood in the ventricles increases, but the straight line indicates a linear relationship. It cannot be linear as a certain volume of blood is never expelled from the ventricles.
The question states, "which range of partial pressures of oxygen produces the greatest change of percentage saturation haemoglobin per unit oxygen tension"
So you have to find the greatest increase which is B.
I guess it's asking for the gradient. B has the steepest gradient, meaning the changes of saturation in percentage per unit is the highest.
hopefully not
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To find the greatest change in % saturation of Hb, move 1 small square to the right along the x-axis, and see the corresponding change on y-axis. This change is greatest where the graph is steepest, in the B region.
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i started from 2007-2012 both may/june and oct/nov
I deleted my post. Here is exactly what I know:
Stroke volume = end systolic volume - end diastolic volume
End systolic volume = volume of blood after a contraction
So even after the ventricle contracts, there will still be some blood left over (maybe not all the blood made it through past the semilunar valve and went back to the ventricle).
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Nov 09. ques 13
Please explain why the answer is A and not C?
thanks..
Please explain why the answer is A and not C?
thanks..
The syllabus changed after 2006, so I only solved from 2007 and onwards.