2012 Biology Example Paper Dse Hong Kong
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2__a-D__
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P__ER a
_0N_ _ON0 _XAMl_AT__NS AND ASS_SS__NT A_TH0RlTY
HO__ __Ne DIP_0MA 0_ SEC_NDAR_ _D__AT1_N __AMI_A_lO_ __12
______Y ___e_ _ t 1 .45 am _ 12.45 pm (t hour)
This paper must _e _n_wered in en_lish
___T____ _0N_
(1) There a_e __UR sectons, A_ B, C and D in t_is Paper. &t__mpt ___ ques_ion_ in _ny TW0 sect_ons.
(2) Write your answers în the Answer _oo_ D_E (C) provided, Sta_ e_ch ques_ion
(not pa_ of a question) on a new page.
(3) _resen_ your answers in p_rag_aphs wherever appropriate,
(_) _llustr_te your a_swers with diagrams wherever appropriate.
(5) The diagrams in this paper are N_T necessari_y drawn to scale.
_ _, \_u _ ^___,__ _ -v,-___ _,/t _ __ __ __ t_Woo
'^ O_t_ eta ___nraY __fe _
___ __n_ _x_m _n__lons and _sse_sm_n_ Aut__r_t_ ___ or _hg gægm ____g;o_ g_gg; æl_ _i__t_ ___erv_d __t_
20l2-DSE-BI02__ l
_ _v_t____t__aJ 443_osooooooo__ . _ __________ ,_, _Ttl___ttm__e__ p(eth_oAur) v_EaJu,co ____osseoooExoooone_rd_c0_olts_fe 9_ ___\_ _ __t____ __ __tFT__l_2_gm____eofsle(oomho_tmo3m_ummrom)_lo_ /lo/_l__/LsL_os_dos___dol__usl___ufn_t__u__m_ _ __6
_ECT_0_ A __man Physìology; _egu_ation and Control
Answer AL_ parts of the question. . l ,(a) In a s_dy about the reptenishm_nt of water after exercis_, participants performed exercise until t hey lo_t
1 500 m_ water. They were then divided in_o 3 groups and ashed to consume a 2 OOO m_ sports drin h containing O, 50 and 1 00 mmol / L sodium respec_iv_ly. Urine samples were cotlected at 1 -hour interval_ for 6 hours and the net body _uid balance throughout the cours_ of the e_peri_ent was determin_d. T he results are respectively shown in the _igures 1A and lB below:
_ 350 ; _ _ soo ' o, 250 _ '_, , , ''i__'__......_
_ 200 _ _, ___9
_, I50 ''t_ _ _
_ '_. ;_,__ ooo ,e
50 _'__ ____?_. o1234s6O1. Intahe Of Tnta_e of
SPOTtS dT'nk sports drinh
(i) Describe the general _atte_s of the urine output a_ter consuming drinhs wíth different sodium
concentrations.
2__a-D__
___
P__ER a
_0N_ _ON0 _XAMl_AT__NS AND ASS_SS__NT A_TH0RlTY
HO__ __Ne DIP_0MA 0_ SEC_NDAR_ _D__AT1_N __AMI_A_lO_ __12
______Y ___e_ _ t 1 .45 am _ 12.45 pm (t hour)
This paper must _e _n_wered in en_lish
___T____ _0N_
(1) There a_e __UR sectons, A_ B, C and D in t_is Paper. &t__mpt ___ ques_ion_ in _ny TW0 sect_ons.
(2) Write your answers în the Answer _oo_ D_E (C) provided, Sta_ e_ch ques_ion
(not pa_ of a question) on a new page.
(3) _resen_ your answers in p_rag_aphs wherever appropriate,
(_) _llustr_te your a_swers with diagrams wherever appropriate.
(5) The diagrams in this paper are N_T necessari_y drawn to scale.
_ _, \_u _ ^___,__ _ -v,-___ _,/t _ __ __ __ t_Woo
'^ O_t_ eta ___nraY __fe _
___ __n_ _x_m _n__lons and _sse_sm_n_ Aut__r_t_ ___ or _hg gægm ____g;o_ g_gg; æl_ _i__t_ ___erv_d __t_
20l2-DSE-BI02__ l
_ _v_t____t__aJ 443_osooooooo__ . _ __________ ,_, _Ttl___ttm__e__ p(eth_oAur) v_EaJu,co ____osseoooExoooone_rd_c0_olts_fe 9_ ___\_ _ __t____ __ __tFT__l_2_gm____eofsle(oomho_tmo3m_ummrom)_lo_ /lo/_l__/LsL_os_dos___dol__usl___ufn_t__u__m_ _ __6
_ECT_0_ A __man Physìology; _egu_ation and Control
Answer AL_ parts of the question. . l ,(a) In a s_dy about the reptenishm_nt of water after exercis_, participants performed exercise until t hey lo_t
1 500 m_ water. They were then divided in_o 3 groups and ashed to consume a 2 OOO m_ sports drin h containing O, 50 and 1 00 mmol / L sodium respec_iv_ly. Urine samples were cotlected at 1 -hour interval_ for 6 hours and the net body _uid balance throughout the cours_ of the e_peri_ent was determin_d. T he results are respectively shown in the _igures 1A and lB below:
_ 350 ; _ _ soo ' o, 250 _ '_, , , ''i__'__......_
_ 200 _ _, ___9
_, I50 ''t_ _ _
_ '_. ;_,__ ooo ,e
50 _'__ ____?_. o1234s6O1. Intahe Of Tnta_e of
SPOTtS dT'nk sports drinh
(i) Describe the general _atte_s of the urine output a_ter consuming drinhs wíth different sodium
concentrations.