Qualification > Sciences
BIO. P1 cie Que.
sizbeauty:
Q1.how many diff polypeptides,each consisting of r aminoacids,can be made if the no of diff aminoacids available is n??
Q2.if there were 34 aminoacids and DNA only contained two types of nitrogenous bases,what would b the mininmum no of bases per codon that could code for proteinz?
Q3.what is the theoretical num of diff dipeptides that may b assembled frm 12 diff aminoacids?
Q.7(nov 1999 cie,plz explain de diagram in this mcq) n Q11 of nov 1999 as well
(tell me de ans of dese mcqz wid explanation plzzz)
thanx in adv..plz rply quickly
tmisterr:
q1 there are n amino acids combing to form poly peptides of length r so they can combine in nr different ways
q2 I would say 6, since they are 2 bases only, then they have to join in groups of six to produce 34 amino acids. they can join in 26 different ways to make 64 amino acids.
q3 dipeptide contains 2 amino acid so 12 amino acids could join in 122 different ways to form 144 amino acids
q7 upload the paper
sizbeauty:
@ tmisterr:
q2 I would say 6, since they are 2 bases only, then they have to join in groups of six to produce 34 amino acids. they can join in 26 different ways to make 64 amino acids.
thx alot for de hlp...i gt 1 n 3 but i don't understand tht y do aminoacidz hav to join in groupz of six(is it a rule or wht)??plz explain this point n nov 1999 ppr is nt available on net,i gt it frm ma teacher.anywyaz thx :)
sanity_master:
--- Quote from: nid404 on May 05, 2010, 04:11:51 pm ---Yes..my bad..it's each ventricle that pumps 80cm3.
--- End quote ---
the stroke volume is the volume of blood that is pumped per beat, by the 2 ventricles, thats y we get the cardiac output (the total volume of blood pumped by the heart) per minute. isnt this right?
the answer to the 1st Q> approx. vol. of blood returning to the heart per min. from the left pul. vein only? as it is the left pul. veins only, it would be half of the heart, meaning, half of the blood.......and as the total is 5.6 Liters, the half would be 2.8 liters
the answer would be 2.8 L/min (its in OCT/NOV2001 Q29)......
tmisterr:
--- Quote from: sizbeauty on May 09, 2010, 02:46:44 pm ---@ tmisterr:
q2 I would say 6, since they are 2 bases only, then they have to join in groups of six to produce 34 amino acids. they can join in 26 different ways to make 64 amino acids.
thx alot for de hlp...i gt 1 n 3 but i don't understand tht y do aminoacidz hav to join in groupz of six(is it a rule or wht)??plz explain this point n nov 1999 ppr is nt available on net,i gt it frm ma teacher.anywyaz thx :)
--- End quote ---
no no not a general rule, usually its a triplet code (e.g CAA would code for an amino acid), but now instead of 3 bases there are only two bases so if they join in groups of 2, they would only be 4 amino acids, if they join in groups of 3, they would only be 8 amino acids, if they join in groups of 4, only 16 amino acids, in groups of 5, only 32 amino acids but if it is in groups of six, then they can make 64 amino acids, since the minimum is 34, this is the answer.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version