Đề thi HSG Sinh MTCT lớp 12 Thái Nguyên 2013-2014 vòng 1 - Học Toàn Tập

cfip bazo nito.[r]

sfi crAo DUC vA EAo rAo

riNn ruAr Ncuvf,N

THr cHgN usc cIAr toAN rnfiN nnAv riNn cAu uv

nAu Hoc zstr -2014

Mdn: SINH HqC LW 12 CAp THPT

Thoi gian: 120 phrit (khdng k€ thdt gian giao di) Ngiy thi: l5ll0l20t3

Chri f: - Di tht gdn cd A5 *ang

- Thi sinh ldm bdi tr$c tiiip vdo bdn di thi ndy.

ot, cuiNn rHlrc

orptvt cu,A, ToAn nAr rnr cAc (H9, crAnn ftn vd chfi xnAoki) (Do Chri tich sO rnAcufID rhi shi)

Bdng soi Bdng chtr

euy ilinh: Thi sinh trinh bdy udn t* cdch gidi, hit qud t{nh todn vdo 6 *Arug tien ni Uat

todn Cic iAt qua tfnh chinh xdc thi 4 chib si phinih,4p phan sau ddu phiiy theo quy t*c ldm trdn

sii c*a tlon vi tinh quy dlnh trong bdi todn

Ciiu 1 Q,a didm)

I{uOi cdy 5.t05 t6 bdo E.coli trong m6i tru}ng chrla gluc6zo vd mutii

amdniurn Sau 300 phut nudi cAy, 0 giai tto4n pha lu! thira si5 lugng-E.coli dat

35.106 t6 bao Thdi gia" tft(5 he le 40 p[Ut Hay xdc dinh thdi gian pha tiAm ph6t vd

thli gian pha 1u9 thta.

I

So lwqc cdch girti Kdt qud

Cflu 2 (5,0 diAm)

Tinh hQ s6 h6 h6p ctn circchSt sau: Glucozo (CoHrzOo), GJ{grin (C3H3O3),

Axit tartric (C#{+Oo), Axit dxalic (CzHzO+), Axit stearic: C1/{35COOH;

Cflu 3 $,A di*m)

Vtrng mfl h6a cira gen ([,hdng ki5 cdilon tC1 thrig) g6m 735 cfip bazo nito Tinh r.rroi i"qg phen tu p'rotei" do gen md h6a uiet mroi lugng ph0n trl trung binh ctra 1 axit amin-dpng ctrua m6t nudcJd:l|l2vd c6 5 1i6n k6t clisunphua hinh thanh ty

phdt tr:ong qu6 trinh cu$n gfp cria phen trl prdtOin nly'

So lwgc cdch gidi

Ciu 4 (5,0 diilm)

Hai hgp trl cria mot loii sinh v$t nguyon ph6n li€n tiep mQt s0 dgt, m6i

truong n6i bio d5 cung c{p nguy6n liQu tucrng duong va 22792 NST dcm Hgrp tfi I

c6 sti dgt nguy6n ph6n bdre I tO AOt nguyOn phen cira hqp ft2' O k) gifra ctra mdi

t6 bao ngu&i ta d6m dugc 44 NST k6P.

a Tim b0 NST Iu&ng b$i cria loii.

b 56 dgt nguY6n Phan oilaT hqp tft

c N€u i.orL qua mnn gi6m phan tpo giao tft vi thp tinh xhy ra binh thucrng

vd kh6ng c6 tnao Eoi cneo NST thi lodi tr6n c6 bao nhi6u lopi giao tu vi bao nhiOu

loai hgpii ktr6c nhau vC nguiSn g6c NST'

C6u 5 (5,0 di€m)

Cho biist gen A - quetrdn, a - qua dai, B - qua d6, b - que xanh, D - qui ngQt,

d - qui chua, cic c$p gen ph6n li d$c Ipp.

X6t ph€P lai P: AaBbdd x aaBbDd

a Kh6ng

"iei ;" dtil, xac dintr ti 19 xu6t hiQn o ddi Fr ttmg ki6u gen sau:

AaBbDd; AabbDD; aaBEDd

b Kh6ng rtd;d6 I i,xacdinh ti lQ xu6t hiQn & tldi Fr tlng ttng loai ki6u hinh sau: A-B-D-; aabbD-; A-bbD-

3

So ltrgc ctich gig! Ki* qu,rt

Cfiu 6 (5,0 diAm)

0 hia, gen A quy dinh th6n cao, ger_ aquy dlnh than th6p; gen B quy dinh hat gpo dpc, b qry ttinh hat g4o trong

Cho c6c c6y co ki6u gen # ,n thp ph6n, 6 Fr thu duo c 18000 c6y vdi 4 lo4i

ki€u gen kh6c nhau, trong d6 4320 c6y than cao, h?t g9o trong- Pq:*g ,"!" FY\

iic, r6i kh6ng hoan toun, mqi di6n bi6n cua NST trong qu6 trinh giem ph6n 0 t6

bio si::h nofirvir t6 bao sinh hpt ph6n giSng hQt nhau'

H6y xitc dinh ffin *i5 hoan vf gen.

So lugc cdch

s6t

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