Đề thi HSG Sinh học lớp 8 cấp huyện Nam Trực, Nam Định 2017-2018 - Học Toàn Tập

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I

PHONG GD&DT I{Ah/i

'ili-t-.'C

DE THI IIOC SINH GIOI CAP HUYEN X,q.U HQC 2017 - 2018

nrox

srNH r{QC -

LoP

8

T'ho'i gian kinr

bii:

i50 phfrt

(Di rhi g()m 02 trang)

Cf,u 1. (3,0 ili0nr)

1.

NOu cA., tr,.,

tt

i-rri.; cl6ng vdt

vi

chilc n[ng cua tinrg b6 phAn? Chrlrng'rninh t6 beo le

do'n vi ch[rc irLiiu ,-'ira _co_th6?

2.

Vi

sao hhi

ni.iiit

riO mdi trr-ri.r'ng thay c16i ma nhi6t ct6 trong co th6 ngudi ludn 6n
dinl-r o t-n['c -17'('

,,.i

r1ao 6l1ing k1iOng qu6 0,5('C.

C/iu 2. (,t,0 cli$pl)

tlhl

i:;ic phdn xa satl

- Phan xa

l:

i'iirrirr

ri:-,i gi rni dira voi lita.

- Phin xa 2:

ili

iiLr.ii troi ning cla tro'nOr-r h6ng hdo.

1.

Cho bi0t.phiiir :<:r iu\o la phan xa co clidr-r ki0n (PXCDK)'i Ph6n xa

nio

ld phan xa

lih6ng di0r-r Lirn (i',Xl(DI()?

2.

So s5.r-rh tinlr

iiiti

rLia PXCDI(

r,i

PXI(Di(?

3.

V0 so at6 ci,rrre. r;hiiu ra md ta dtLong cli cua xung thAn

kinh cia2

ph6.n xa tr0n.

Cf,u 3. (3,0 tli0nr)

l.

MOt ban

lio;

siiih liim tlri nghi6nr v6i 4 6ng nghiOnr nhu sau:

Ong nghiOnr VAt li0Lr Nhiet d0 pH

A 2tnl trriiir-' brrt j- 2rn1 hd tinh b6t 3'.7'C n/\lr!
B 2nrl

r[iri':

ilich pepsin-J ?url h6 tinh bdt 3J,,C 71

C 2ttt rrr:6c llrit -l- _2rni

vin

_lilng_trdng_{tr(Lng ga} _37''_C

)\

D 2ml

iliiirr

clich pepsin-1

?rll

viin ldng trdng tr[rng 37'' C

)5

-1"

FlSy cho

biii

i,irr

righiirn nto cri phiur irng l-roa hoc xdry ra? N6u trong eothti nguoi
thi phan ilng ilo c..r lir-r \:r\, r'.r o co qlrarl niio cta 6nu ti0r-r hoa? Giai thich?

2, Can c[r \ri'r.r .iili, il0 khnng clirrir:

"

Rudt non

Ii

co' qlran chir y6u cira hC tiOu h5a

clAn-r nhi0m vai

trii lril;

LirLr

ihit

clinh cllLd'r-rg".

1'

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Cf,u 4. (2,0 dl6rn)

Mdt

iroc sinir ltrir

8 c6

nhr-r cdr.r Li0r,r clirng nitng luo-r-rg

rrSi

ngdy

ld

2200 kPcal.

;. _- \ r . i\

Trong so nting liroirg. ir:i_r'ti"ri pr6tein clrug cap 19oh, glr-rxit cung c1tp 68Y0. cdn Iai ld do

lipit

cung cip. 13iOt lertg.

*

1 gam prdteir"r

lihi

tir-roc phin giai hoan todn bo'i 0,97

lit

6xi sC giAi phong ra 4,1 kcal.

*

I gail

lipit khi ,-iir',;c _;;irurr_giaihoar-i tor)n bo'i 2,03

lit

6xi s0 giai ph6ng ra 9,3 kcal.

*

I

gam qllrxit l<hi .iiioc ;ririn giai hor\n toiin boi 0,83

lit

6ri

sE giai phong ra 4,3 kcal.

l.

Tinh hli6i ltLo-ng

il,iiri)

_1;r'6tein,lipit, gluxit ma co the can sut clpng trong

i

ngdy?
2. Tinh ltLong

6ri (iiti

:ri:r ,:o th0 cfrrr ciirng trong 1 ngt\1, c10 tao.u tO ning luo-ngtr6n?

Cf,u 5. (2,5 rli0rrr)

1.

'frinh b:\-r,' c1r-r:i it'lrilr lilnl'r thiLnh rtLrti'c ti0r-r.

2.

NhiLng hoat ;liric. ilLro'i c1fly Anh huring nhri' th6 ndo c16n qLr6 _{trinh hinh}thdnh nu6'c

ti0u'l Giai tlriui ;','.

a, An tnOt lrtoirg i.,it thfrc

iu

mfu-r.

b. Choi th0 tiri,.r (riitri' b(xrg

cll

)

Cf,u 6. (3,0 di0rn)

1. Giai

thicii

r:ii siirr lthi ditng chay' r6i chfms ta v6n phai thcr

gip

mdt thoi gian r6i

.', _^, I t

Irroi h0

ltill

trrr llri

i,:,.i

r.r,i,irrt':'l

2. Tror-rg mCi

,:iu.lil'iii

me c6 nh6ur

uau

O, bd nh6m nr6Lr

AB.

Ho sinh duo-c m6t
ngud'i con treri co niii'irri

iliirr

.,\ r,i\ 1161 ngr-rili con gai c6 nh6m rn6u B. Ngud'i con trai bi
bdnh phai trLr1,0fl iri:ii.r _1rip.

llrii

rrhitng ai trong gia clinh co thd truy6n rr6u cho cAu con

trai d6?

Vi

sao'l

3.1(hi trul'u\ri,l,iiii ,,'i\rr

_ilirr

_bao_{nirirng ngtiy0n}

_tic

_ndo?

Ciiu 7. (2,5 di0uii

1. Phin bi0t rri;,'i:1, rriii tier vri tur,€n ngoai ti5t vO cAu 1ao va chftc n[ng?
2.

Vi

sao r-roi: '' iiivdn triv la tr-r.v0n pha"?

I I E'T.,

IILI4-,)

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