Stimuli and Responses; Rangsangan dan Gerak Balas

The term stimulus refers to

Perkataan rangsangan merujuk kepada

• the ability of an organism to respond

  kebolehan organisma untuk bertindak balas

• the extent of changes in the surrounding

  takat perubahan pada keadaan sekeliling

• a change in the environment

  perubahan pada persekitaran

• a change in the pH of the water

  perubahan pH air

Tags

NGSS.MS-LS1-8

The withdrawal of the hand from a hot object is a response to

Pengalihan tangan daripada objek panas adalah tindak balas

• a mechanical stimulus

  rangsangan mekanikal

• a thermal stimulus

  rangsangan terma.

• an osmotic stimulus

  rangsangan osmosis

• an electrical stimulus

  rangsangan elektrik

Pick out the WRONG statement concerning the function of the nerve cell.

Pilih kenyataan yang salah berkenaan dengan fungsi sel saraf.

• It can convey impulses in both directions

  Ia boleh menghantar impuls dikedua-dua arah

• It does not weaken the impulse passing through it

  Ia tidak melemahkan impuls yang melaluinya

• It conveys messages in the form of electrical impulses

  Ia menghantar mesej didalam bentuk impuls elektrik

• It conveys impulses to the effector organs

  Ia menghantar impuls ke organ efektor

What is the reaction that is shown by the plant in the figure below?

Apakah tindakbalas yang ditunjukkan pada pokok pada rajah di bawah?

• Positive hydrotropism

  Hidrotropisme positif

• Negative phototropism

  Fototropisme negatif

• Positive thigmotropism

  Tigmotropisme positif

• Negative geotropism

  Geotropisme negatif

The figure above shows a mimosa plant. What is the conclusion that can be derived based on the reaction in the figure.

Rajah di atas menunjukkan pokok semalu. Apakah kesimpulan yang dapat dibuat berdasarkan pada tindakbalas di atas?

• The mimosa plant shows nastic movement

  Pokok semalu menunjukkan gerak balas nasti

• The leaf of the mimosa becomes sturgid when touched

  Daun semalu menjadi layu apabila disentuh

• The osmotic pressure in the mimosa cell increases when touched

  Tekanan osmtik pada sel semalu meningkat apabila disentuh

• The temperature of the glass rod becomes very high until the leaf fades when touched

  Suhu rod kaca menjadi tinggi sehingga daunnya layu apabila disentuh

Tags

NGSS.MS-LS1-2

The sudden withdrawal of the hand from a hot object is

Pengasingan tangan secara tiba-tiba daripada objek panas adalah

• a voluntary action

  tindakbalas terkawal

• an involuntary action

  tindakbalas luar kawal

• a reasoned action

  tindakbalas bersebab

• a reflex action

  tindakbalas refleks

Examples of reflex actions are

Contoh tindakan refleks adalah

• knee jerk

  ketukan lutut

• change in pupil size

  perubahan saiz pupil

• sneezing

  bersin

• blinking of the eyelids

  kelipan mata

• peristalsis

The root of the Hibiscus responds positively to

Akar Hibiscus merangsang secara positif kepada

• sunlight

  cahaya matahari

• pressure

  tekanan

• gravity

  graviti

• water

  air

Tags

NGSS.MS-LS1-5

The advantage of the root being able to respond positively to gravity include

Kelebihan akar untuk merangsang secara positif kepada graviti termasuk

• being able to absorb water from subsoil layers

  boleh menyerap air daripada lapisan bawah tanah

• being able to secrete waste into the soil

  boleh merembes bahan buangan ke tanah

• being able to obtain more nutrients from the soil.

  boleh memperoleh banyak nutrien daripada tanah

• being able to anchor the plant more firmly to the soil

  boleh menjadi sokongan kepada tumbuhan supaya lebih kukuh diatas tanah

Tags

NGSS.MS-LS1-5

Humans have five sensory organs. Tick the organs.

Manusia mempunyai lima organ deria. Tandakan organ deria.

• eyes

  mata

• ears

  telinga

• tongue

  lidah

• hand

  tangan

• nose

  hidung