you're welcome ^_^ and Merry Christmas to you tooThanks Hanona! Great explanation. I now understand, thanks much. Merry Christmas.
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you're welcome ^_^ and Merry Christmas to you tooThanks Hanona! Great explanation. I now understand, thanks much. Merry Christmas.
1) - Proteins can be modified in several ways. They are usually slightly modified in the Rough E.R, whereas most of the modification occurs in the Golgi Apparatus. Its like proteins are blocks of wood. Now the wood can be modified to make a tree house, or a basic plank consisting of several blocks of wood. Now how exactly does modification occur, or what change occurs that tells us that the protein has been modified? Well, proteins can be modified byhttp://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w10_qp_22.pdf
question1 part c-ii
I don't understand this !
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s10_qp_22.pdf
question5 part d
I don't understand this
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s11_qp_21.pdf
question3 part c ( I know the answer I think but I think I'm not exactly sure ....I need to explain translation in this right?)
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s11_qp_22.pdf
question 5 part b -ii
Is this alright to score three marks?
The phospholipids form a bilayer.It provides fluidity to the membrane and has hydrophilic heads which face outwards into the water and hydrophobic tails which act as a barrier to water soluble substances.
If it has the same water potential, then the length of the strip before and after immersion will be the same (ie, no change in length). Thus the ratios of their lengths will be equal to 1. (Assume that the initial length was 5 cm, then the final length is also 5 cm. 5/5 = 1). Thus by looking from the graph, find the sucrose concentration that corresponds to 1.0
u know u shud have the link in ur signature so more ppl can know about itCheck out my thread
https://www.xtremepapers.com/community/threads/as-level-biology-classified.36370/
Like if I helped
Active transport requires ATP and oxygen is used in making atp and oxygen is present in air
fact is that transpiration doesnot maintain the water potential... if u say transpiration maintains the water potential then why wilting occurs??Hello everybody. I have been confused by the following question for a long time...Please help
The answer for this question is D.
But why can't C be right? I thought that stomata are open because of guard cells but not transpiration.
View attachment 49685
the chi square test is a test that allows us to compare our observed results with our expected one and decide whether or not there is a significant difference between them. we usually take a probability of 0.05 as the critical value, so if the chi answer is less than 0.05 then the differences are significant and we must reconsider our assumptions but if it is greater than 0.05 then the differences are significant and due to chanceswhat is the chi squared test and the null hypothesis?
Can anyone explain what it's purpose?
the chi square test is a test that allows us to compare our observed results with our expected one and decide whether or not there is a significant difference between them. we usually take a probability of 0.05 as the critical value, so if the chi answer is less than 0.05 then the differences are significant and we must reconsider our assumptions but if it is greater than 0.05 then the differences are significant and due to chances
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