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= 73/95
2. Tentukan nilai n yang memenuhi : 6 nC2 = (n + 2)C4
= 6 . n (n - 1) (n - 2)! / (n - 2)! . 2! = (n + 2) (n + 1) (n) (n - 1) (n - 2)! / (n - 2)! . 4!
3n (n - 1) = (n + 2) (n + 1) (n) (n - 1) / 6x4
3n (n - 1) = (n + 2) (n + 1) (n) (n - 1) / 24
24.3n (n - 1) = (n + 2) (n + 1) (n) (n - 1)
72n (n - 1) = (n + 2) (n + 1) (n) (n - 1)
72 = (n + 2) (n + 1)
72 = n² + 3n + 2
n² + 3n - 72 + 2 = 0
n² + 3n - 70 = 0
(n + 10) (n - 7) = 0
n1: -10 tidak memenuhi
n2: +7 memenuhi
n = 7
3. Tuliskan protein yang terbentuk dari UCC ACC GUG GAG CGA GCA CAG !
UCC = SER - serin
ACC = THR - treonin
GUG = VAL - valin
GAG = GLU - asam glutamat
GCA = ARG - arginin
GCA = ALA - alanin
CAG = GLN - glutamin
4. Dalam tata nama karbohidrat, biasa diberi notasi D dan L. Jelaskan masing-masing arti dari notasi tersebut!
Notasi D berasal dari kata Dextro berarti kanan, dan notasi L berarti levo atau kiri, sebagai penanda digunakan gugus hidroksilnya. Biasanya huruf D atau L ditulis di depan nama gula sederhana. Bentuk L merupakan bayangan cermin dari bentuk D.
5. Translasikan 5' CCG TAT CGT AGG TGC ACC 3' ke dalam bentuk RNA !
= GGC AUA GCA UCC ACG UGG
(tidak ada met dan stop codon)
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