Lembaran formula, langkah kaedah utama untuk setiap topik dan 16 soalan latihan, dengan penyelesaian penuh di bahagian belakang.
Lions live in groups called prides, and the females do most of the hunting together. Tigers usually live and hunt alone. How are lions and tigers different, according to the passage?
“Maya had moved schools four times in six years. On her first day at the new school, she didn’t unpack her locker. ‘No point,’ she told herself.” Why most likely did Maya not unpack?
Sebuah bulatan mempunyai jejari 8 in. Dengan π ≈ 3.14, cari luasnya A.
Selepas kenaikan gaji 25%, seorang pembantu jururawat memperoleh $93.75 seminggu. Berapakah gaji mingguan x sebelum kenaikan, dalam dolar?
Saraf manakah yang tertekan dalam sindrom terowong karpal?
Seorang pesakit tidak dapat mengabduksi lengan melebihi kira-kira 15° selepas patah leher bedah humerus, dan mengalami kebas pada bahu sebelah lateral. Saraf manakah yang paling mungkin cedera?
Manakah contoh klasik suap balik positif dalam badan?
Mengapakah seseorang dengan kecederaan saraf tunjang tinggi di atas T1 berisiko mengalami tekanan darah rendah?
Apakah mutasi?
Why does the influenza vaccine need to be updated most years?
To which family of organic compounds does ethanol, C₂H₅OH, belong?
Which phrase best describes a 0.001 M solution of hydrochloric acid?
Choose the correct pronoun: “Each of the girls brought ___ own lunch.”
Choose the best transition to begin a concluding sentence: “___, regular hand washing is one of the simplest ways to prevent infection.”
Choose the meaning of the word in bold: “The team will implement the new care plan today.”
Choose the meaning of the word in bold: “The wound edges were approximated with sutures.”
Jawapan: C · Lions live in groups, but tigers mostly live alone.
The passage contrasts lions living and hunting in prides with tigers usually living and hunting alone.
Jawapan: A · She expected to move again before long.
After moving four times in six years, Maya probably expects to move again soon, so unpacking seems pointless to her.
Jawapan: A = 201 in²
Perimeter, luas dan isi padu: perimeter ialah jarak mengelilingi sesuatu bentuk (segi empat tepat: 2l + 2w). Luas diukur dalam unit persegi: segi empat tepat l × w, segi tiga ½ × tapak × tinggi, bulatan π·r². Lilitan bulatan ialah π·d = 2π·r. Isi padu dalam unit padu: kuboid l × w × h, silinder π·r²·h. Gunakan nilai π yang diberikan oleh soalan.
Jawapan: x = 75 $
Peratusan songsang: apabila sesuatu nilai telah dinaikkan atau dikurangkan dengan peratusan, nilai baharu ialah peratusan daripada nilai asal, bukan sebaliknya. Selepas diskaun 20% harga ialah 80% daripada harga asal, jadi harga asal = harga baharu ÷ 0.80. Jangan sekali-kali menambah semula 20% pada harga baharu.
Jawapan: C · Saraf median
Saraf median melalui terowong karpal di bawah retinakulum fleksor; tekanan menyebabkan rasa kebas dan kesemutan pada ibu jari, jari telunjuk dan jari hantu.
Jawapan: C · Saraf aksilari
Saraf aksilari melilit leher bedah humerus. Ia membekalkan deltoid dan teres minor serta kulit di bahu lateral (kawasan "lencana rejimen").
Jawapan: A · Pembebasan oksitosin semasa bersalin
Regangan serviks membebaskan oksitosin, yang menguatkan pengecutan dan menyebabkan lebih banyak regangan. Gelung berakhir dengan kelahiran. Contoh lain ialah suap balik negatif.
Jawapan: D · Aliran keluar simpatetik ke saluran dan jantung terputus
Aliran keluar simpatetik meninggalkan saraf tunjang pada T1–L2. Lesi di atasnya menghilangkan tonus vasomotor dan dorongan simpatetik jantung sementara vagus masih berfungsi, menyebabkan hipotensi dan bradikardia (syok neurogenik).
Jawapan: C · Perubahan dalam urutan bes DNA
Mutasi ialah sebarang perubahan dalam urutan DNA. Ia mungkin tiada kesan, kesan yang memudaratkan atau sekali-sekala kesan yang bermanfaat.
Jawapan: D · The virus keeps changing its surface proteins through mutation
Influenza viruses mutate often, changing the antigens on their surface. Memory cells from earlier infections or vaccines may no longer recognise the new strain, so the vaccine is updated to match the strains expected to circulate.
Jawapan: A · Alcohols
Ethanol has an –OH group, so it is an alcohol. Names ending in "-ol" signal alcohols, such as methanol and propanol. Ethanol is used in hand sanitisers and as a disinfectant.
Jawapan: C · A dilute solution of a strong acid
Strength describes how fully an acid ionises; HCl ionises completely, so it is strong at any concentration. Concentration describes how much acid is in each litre; 0.001 M is dilute.
Jawapan: A · her
“Each” is singular and refers to girls, so the singular possessive “her” agrees with it. “Hers” stands alone and cannot come before a noun.
Jawapan: A · In conclusion
“In conclusion” signals a summary of the main idea. “For instance” gives an example, “in contrast” shows difference and “meanwhile” shows time.
Jawapan: C · Put into action
To implement a plan is to put it into effect.
Jawapan: C · Brought close together
In medicine, to approximate wound edges is to bring them together so the wound can heal. In everyday use it can also mean “estimate”.
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