Page 269 - MODUL BIOLOGI EXCELL SPM

MODUL BIOLOGI EXCELL SPM

SET 4 (SOALAN 1)
Answer all questions
Jawab semua soalan

1. Osmoregulation is the process of maintaining the water content of the blood at a constant
level. Osmoregulation is achieved by regulating the volume of urine production by kidneys.
A group of students carry out an experiment to investigate the effect of temperature on the
volume of urine produced.
Pengosmokawalaturan ialah satu proses untuk mengekalkan kandungan air dalam darah
pada satu aras yang malar.Pengosmokawalaturan dicapai dengan mengawalatur isipadu
penghasilan air kencing oleh ginjal.
Sekumpulan pelajar menjalankan eksperimen untuk menyiasat kesan suhu ke atas isipadu air
kencing yang dihasilkan.

The following steps were carried out:
Langkah-langkah berikut dijalankan:

Step 1 / Langkah 1

Student A, B and C were given 250 ml of distilled water to drink as quickly as possible after
emptying their bladder.
Pelajar A, B dan C diberikan 250 ml air suling untuk diminum secepat mungkin selepas
mengosongkan pundi kencing mereka.

Step 2 / Langkah 2

Student A, B and C were only allowed to sit and read books in an air-conditioned room at
o
o
o
temperature 17 C, 22 C and 27 C respectively for one hour.
Pelajar A, B dan C hanya dibenarkan untuk duduk dan membaca buku di dalam bilik berhawa
o
o
o
dingin pada suhu 17 C, 22 C dan 27 C masing-masing selama satu jam.

Step 3 / Langkah 3

After resting for one hour, each student urinated and collected their urine in a measuring
cylinder.
The volume of urine produced is recorded in Table 1.
Selepas berehat selama 1 jam, setiap pelajar membuang air kecil dan mengumpulkan air
kencing mereka di dalam silinder penyukat. Isipadu air kencing yang dikumpul direkodkan
dalam Jadual 1.

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