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PEPERIKSAAN AMALI.

Assalamualaikum...Apa khabar semua? Bermula tahun hadapan 2015 kaedah penilaian SPM bagi semua mata pelajaran Sains dan Sains Tulen akan mengikut format lama... 15 tahun dahulu KPM melalui LPM menukar format amali kepada kertas 3 yang tidak melibatkan perlakuan amali. Mulai tahun hadapan murid-murid tingkatan lima 2015 yang mengambil Peperiksaan SPM perlu membuat kerja amali dalam makmal. Selepas menjalankan amali murid-murid perlu menjawab soalan yang disediakan. Susulan daripada itu mulai tahun 2014 bagi pelajar tingkatan empat perlu didedahkan dengan amalan amali yang berkesan.
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Homeostasis

Homeostasis   is the process of maintaining a constant internal environment despite changing external conditions Ensures that the organs of the body operate within their normal limits thereby working efficiently Based on a   feedback   system Information is sent to a control center which directs the organ to react accordingly Two major control centers: 1.      Brain of the nervous system 2.      Glands of the endocrine system Several factors must be regulated including: 1.      Temperature 2.      Heart rate 3.      Respiratory rate 4.      Blood pressure 5.      Water balance 6.      Blood sugar levels. 7.   Detoxification Activity Organs involved Center of Control Temperature Skin Hypothalamus ...
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The Human Endocrine System

Endocrine gland Main hormone Function Pituitary gland Growth hormone (GH) • Controls growth Antidiuretic hormone (ADH) • Stimulates the reabsorption of water in the kidneys (osmoregulation) Follicle-stimulating hormone (FSH) • Stimulates the formation of egg follicles in the ovary & the formation of sperms in the testes. Luteinising hormone (LH) • Brings about ovulation Thyroid-stimulating hormone (TSH) • Stimulates the thyroid gland to produce thyroxine. Endocrine gland Main hormone Function Thyroid gland Thyroxine • Control growth • Controls the rate of metabolism Testis (plural : testes) Androgen • Stimulates the development & maturation of the testes • Controls the development of male secondary sexual characteistics Adrenal gla...
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