gene既問題

小霞的fans

做過一題mc係..
which of the following descriptions about a gene are correct?
1.it may undergo mutation
2.it is made of DNA and proteins
3.it determines the types of protein a cell make

A.1 and 2
B.1 and 3
C.2 and 3
D.1,2 and 3

我想知點解答案係B..
佢唔係由DNA同PROTEIN組成架咩!?
DNA由proteins組成架喎..我有咩mistake><

Royal

DNA係核酸(nucleric acid)的一種，並非protein

orb

Virus has a protein coat, but made up of genetic materials

可能樓主搞錯呢樣野

hk56740

DNA(Deoxyribonucleic acid) consist of 2 polynucleotides wrapping around each other(double helix),a strand of polynucleotideis linked together with nucleotides by condensation.Each nucleotide is composed ofa phosphate group ,a base (guanine ,cytosine ,adenine or thymine) and a five carbon sugar(deoxyribose).
所以,DNA唔係由protein組成架.

lawkanok

gene其實係DNA上o既nitrogen base組成,由DNA同protein組織o既係chromosome