Lembaran formula, langkah kaedah utama untuk setiap topik dan 16 soalan latihan, dengan penyelesaian penuh di bahagian belakang.
Some birds, such as Arctic terns, migrate thousands of kilometres every year. Scientists think birds find their way using the sun, the stars and Earth’s magnetic field. Which word best describes the scientists’ explanation?
The author writes: “Since the hospital started a quiet hour from 2 to 3 p.m., patients report sleeping better. However, the survey asked only patients on one ward, during one week.” What does the second sentence do?
Sepasang kasut berharga $68.99. Ia dijual dengan diskaun 15%, dan cukai jualan 7% ditambah pada harga jualan. Berapakah harga akhir P? Bundarkan kepada sen terdekat.
Dalam sesuatu kursus, kerja rumah dikira 20%, peperiksaan pertengahan 30% dan peperiksaan akhir 50% daripada gred. Seorang pelajar mendapat 97% dalam kerja rumah, 77% dalam peperiksaan pertengahan dan 81% dalam peperiksaan akhir. Berapakah gred kursus G?
Struktur manakah yang merupakan berkas utama gentian saraf yang menghubungkan hemisfera serebrum kiri dan kanan?
Tumor di puncak paru-paru menyebabkan kelopak mata terkulai, anak mata mengecil dan kehilangan peluh pada sebelah muka yang sama. Laluan manakah yang terganggu?
Apakah kesan utama rangsangan saraf vagus pada jantung?
Dalam sistem renin–angiotensin–aldosteron, di manakah angiotensin I terutamanya ditukar kepada angiotensin II?
Which body system works with the respiratory system to deliver oxygen to body cells?
A linear DNA molecule is fully cut by a restriction enzyme, giving fragments of 500, 300 and 200 base pairs. How long was the original molecule?
How does an antacid tablet relieve heartburn caused by excess stomach acid?
Element A has 1 valence electron and element B has 7 valence electrons, both in period 3. Which statement best compares them?
Choose the correct word: “The nurse will ___ the family about home care.”
Which choice best combines the sentences to show cause and effect? “The patient skipped breakfast. She felt faint during the test.”
Choose the meaning of the word in bold: “The new barcode system will enhance medication safety.”
Choose the meaning of the word in bold: “After the loss, the patient showed marked apathy.”
Jawapan: A · Uncertain
“Scientists think” shows the explanation is a likely idea, not something fully proven.
Jawapan: D · It limits how far the result can be applied.
The second sentence notes that the evidence comes from one ward over one week, so the result may not apply generally.
Jawapan: P = 62.74 $
Diskaun dan cukai jualan: diskaun d% meninggalkan (100 − d)% daripada harga; cukai t% menambah t% daripada harga selepas diskaun. Kerjakan mengikut urutan itu: harga × (1 − d/100), kemudian × (1 + t/100). Bundarkan wang kepada sen terdekat hanya pada akhirnya.
Jawapan: G = 83 %
Purata berwajaran: apabila bahagian dikira dengan peratusan yang berbeza, darabkan setiap skor dengan pemberatnya (sebagai perpuluhan) dan tambahkan. Min biasa bagi skor hanya betul apabila setiap bahagian dikira sama rata.
Jawapan: D · Korpus kalosum
Korpus kalosum ialah komisur terbesar, yang menghubungkan kawasan sepadan pada kedua-dua hemisfera. Kapsul dalaman pula membawa gentian unjuran ke atas dan ke bawah.
Jawapan: D · Rantai simpatetik serviks
Ini sindrom Horner: ptosis, miosis dan anhidrosis akibat gangguan gentian simpatetik, di sini oleh tumor apeks (Pancoast) yang menekan rantai simpatetik.
Jawapan: A · Ia memperlahankan kadar jantung
Vagus membebaskan asetilkolin pada reseptor muskarinik dalam nod SA dan AV, memperlahankan penjanaan perentak dan pengaliran AV.
Jawapan: A · Dalam paru-paru
Renin (buah pinggang) memotong angiotensinogen (hati) kepada angiotensin I, yang ACE, terutamanya pada endotelium kapilari pulmonari, tukarkan kepada angiotensin II.
Jawapan: A · The circulatory system
The lungs load oxygen into the blood, and the heart and blood vessels of the circulatory system carry it to the cells. The same systems bring carbon dioxide back to the lungs.
Jawapan: B · 1000 base pairs
The fragments together make up the whole molecule: 500 + 300 + 200 = 1000 base pairs. The three fragments also show that there were two cutting sites.
Jawapan: B · A weak base in it neutralises some of the acid
Antacids contain weak bases such as calcium carbonate, magnesium hydroxide or aluminium hydroxide. They neutralise some HCl, raising the stomach pH and easing the burning feeling.
Jawapan: B · A is a reactive metal and B is a reactive nonmetal
Period 3 with 1 valence electron is sodium, a reactive metal; with 7 it is chlorine, a reactive nonmetal. They react with each other to form the ionic compound NaCl.
Jawapan: C · counsel
“Counsel” means to advise. A “council” is a group that makes decisions, and a “consul” is a government official abroad.
Jawapan: D · Because the patient skipped breakfast, she felt faint during the test.
“Because” shows that skipping breakfast caused the faintness. “And” only adds ideas, and “although” and “but” wrongly suggest contrast.
Jawapan: B · Improve
To enhance is to improve the quality or value of something.
Jawapan: B · Lack of interest or emotion
Apathy is a lack of interest, enthusiasm or concern.
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