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CU HI TRC NGHIM
L Quc Huy
Lu Ngc Bo Nguyn
Thi Trc Qunh
CU HI TRC NGHIM : Bi 6: AXIT NUCLIT
1. C my loi axit nuclic?
A. 2 loi: ADN v ARN.
B. 3 loi: ADN, ARN v axit nucleic.
C. 4 loi: ADN, ARN, gluxit v nucleotit.
D. 5 loi: ADN, ARN, mARN, tARN v rARn.
2. n phn ca axit nucleic gi l:
A. Axit amin.
C. Mnsaccarit.
B. Nucleotit.
D. Glyxrl v axit bo.3. M hnh ADN u tin l ca nh khoa hc no to nn?
A. Cric v Oatsn (F.Crick v J.Watson).
B. Oaityc v Magulit (R.Whittaker v L.Margulis).
C. Huc v Lvenhuc (R.Hook v A.V.Leeuwenhoek).
D. Soan v Slyen (T.Schwarn v M.Schleiden). 4. Phn t ADN c c im cu trc c trng l:
A. 2 chui polynucleotit gn nhau nh lin kt hidro.
B. 2 chui polynucleotit cng xon quanh mt trc.
C. 2 chui polynucleotit song song, ngc chiu nhau.
D. A, B, C ng.5. c im cu trc c trng ca ADN c th gi l:
A. Chui xon .
C. Cu trc xon kp.
B. Cu trc dng B.
D. Dng tm gp .6. Phn t ADN c cu to tun theo nguyn tc no?
A. Nguyn tc b sung.
C. Nguyn tc a phn.
B. Nguyn tc bn bo ton.
D. A v C ng.7. Nu gi: A, T, G, X l s lng tng loi nucleotit ca mt ADN, th biu thc ng l:A. A + T = G + X.
C. A + T / G +X = 1.
B. A + G = T + X.
D. A = T = G = X.8. Nu gi:A, T, G, X l s lng tng loi nucleotit ca mt ADN, gi N l tng s nucleotit, th biu thc sai l:
A. A+ T +G +X =N.
C. N = 2( A+ X).
B. T+ G = N/2.
D. 2A +3G = N.9. Loi lin kt no to nn xng sng ca 1 chui ADN?
A. Cc lin kt photphodieste
C. Cc lin kt peptit
B. Cc lin kt hidro
D. Cc lin kt glyczit10. ADN khng c chc nng:
A. Bo qun v mang thng tin cu trc protein
B. Truyn t thng tin di truyn ca sinh vt
C. C s vt cht ch yu ca di truyn cp phn t
D. Trc tip lm khun mu tng hp ra protein11. S no ng?
A. Protein ADN ARN
C. ADNARNProtein
B. ARN ADn Protein
D. ADN Protein ARN12. Tnh a dng v dc th ca ADN c qui nh bi:
A. S lng cc nucleotit ca n
B. Trnh t cc nucleotit ca n
C. Thnh phn cc nucleotit ca n
D. A, B, C ng13. Tnh a dng v c th ca ADN to ra tnh a dng v c th ca :
A. Mi loi sinh vt
C. Cc loi ARN
B. Cc loi protein
D. A, B, C ng14. mARN (vit tt t messenger ARN) gi bng tn Vit l:
A. ARN thng tin
C. ARN ribxm
B. ARN vn chuyn
D. AND vng15. tARN (vit tt t transport ARN) gi bng tn Vit Nam l:
A. ARN thng tin
C. ARN ribxm
B. ARN vn chuyn
D. AND vng16. rARN (vit tt t ribosome ARN) gi bng tn Vit nam l:
A. ARN thng tin
C. ARN ribxm
B. ARN vn chuyn
D. AND vng17. V cu to, ARN ging ADN im :
A. n phn l nucleotit tng t nhau
B. Tun theo nguyn tc a phn
C. Loi lin kt phn t nh nhau
D. A, B, C ng18. Cu to ca ARN khc ADN im :
A. Ch c mt chui polynucleotit
B. S lng n phn t hn
C. Cc loi baz khng theo nguyn tc b sung
D. A, B., C ng19. Loi phn t no tn ti sut trong i mt t bo?
A. ADN
C. tARN
B. mARn
D. rARn20. S no ng vi virut HIV?
A. ADN Protein ARN C. ADN ARN Protein
B.ARNADNProtein
D.ARNADNARNProteinCu: 1
2345678910p n: A
BADCDBDADCu: 11
121314151617181920
p n: C
DDABCDDAD