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A level Biology: Post your doubts here!

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please answer the following questions:
Q1. What is the size of a typical eukaryote and prokaryote?
Q2. Do we have to learn all the sizes of the organelles of a eukaryote?
Q3. what is centrifugation?
 
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bubbles1997 741808 said:
please answer the following questions:
Q1. What is the size of a typical eukaryote and prokaryote?
Q2. Do we have to learn all the sizes of the organelles of a eukaryote?
Q3. what is centrifugation?
If by size u mean diameter than prokaryote is 0.5 to 5 micro meter anfd eukaryote is 40 micro meters
we are supposed to know thw diameters
centrifugation :/ sorry haven't even heard of it
 
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please answer the following questions:
Q1. What is the size of a typical eukaryote and prokaryote?
Q2. Do we have to learn all the sizes of the organelles of a eukaryote?
Q3. what is centrifugation?
centrifugation is the process of rotating at a very high speed in order to seperate the solids from liquids........
 
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Hi,

What u guys think that about the questions related to which topic can come this
time in A2 Biology Exams .
Have u done any survey through pastpapers or anything else.

Lets discuss over own opinions.
 
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q15 it a cholesterol molecule and protein channel and i as i have stiuded they are made up both hydrophobic and hydrophilic
q16 double will increase the fluidity due to difficulty of the kinked acyl tail to interact . Polyunsaturated fatty acids are liquid at room temperature whereas saturated and hydrogenated fatty acids (trans fats) are solid at room temperature.
q23 A and T makes 2 hydrogen bonds while G and C makes 3
 
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I was checking june 2011 p13 until i just noticed some extraordinary answers
is this markscheme correct or cambridge has just faulted
for eg: q17 must be B but markscheme says it is C (m/j 2011 p13)
this makes me a little bit concerned, especially this was repeated last sessions only!
 
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