Lembar rumus, langkah-langkah metode utama untuk setiap topik, dan 16 soal latihan, dengan pembahasan lengkap di bagian belakang.
“Remember to take your medicine,” Mr. Okafor’s daughter called as she left. He nodded, but an hour later the pill was still on the kitchen table next to his untouched glass of water. What can you infer?
Medicine schedule: “Tablet A: every 12 hours. Tablet B: every 8 hours.” Both are first given at 8 a.m. At what time will both tablets next be due together?
Sepasang sepatu berharga $146,50. Sepatu itu diskon 15%, dan pajak penjualan 10% ditambahkan pada harga diskon. Berapa harga akhir P? Bulatkan ke sen terdekat.
Sebuah resep menyuruh memanggang pada 220 °C. Berapa suhu itu T dalam derajat Fahrenheit?
Otot mana yang merupakan ekstensor utama siku?
Apendisitis dini sering dirasakan sebagai nyeri samar di sekitar umbilikus. Mengapa?
Apa rangsangan utama untuk bernapas pada orang sehat?
Dalam sistem renin–angiotensin–aldosteron, di mana angiotensin I terutama diubah menjadi angiotensin II?
Which statement best describes biological evolution?
A large molecule contains carbon, hydrogen, oxygen, nitrogen and phosphorus. Its monomers each have a sugar and a base. What type of molecule is it?
When a nucleus emits an alpha particle, how do its mass number and atomic number change?
A compound is a gas at room temperature, does not conduct electricity in any state, and is made of two nonmetals. What kind of substance is it most likely?
Which spelling is correct for the group of people who run a country?
Which revision eliminates the redundancy? “The two twins were identical in appearance and looked exactly alike.”
Choose the meaning of the word in bold: “The nurse observed erythema around the IV site.”
What does the term pneumothorax mean?
Jawaban: D · Mr. Okafor forgot or chose not to take his medicine.
The pill and the untouched water are still on the table, so he has not taken it yet.
Jawaban: D · 8 a.m. the next day
Tablet A is due at 8 p.m. and 8 a.m.; Tablet B at 4 p.m., midnight and 8 a.m. The first shared time is 8 a.m. the next day, 24 hours later.
Jawaban: P = 137 $
Diskon dan pajak penjualan: diskon d% menyisakan (100 − d)% dari harga; pajak t% menambah t% dari harga setelah diskon. Kerjakan dengan urutan itu: harga × (1 − d/100), lalu × (1 + t/100). Bulatkan uang ke sen terdekat hanya di akhir.
Jawaban: T = 428 °F
Skala suhu: °F = °C × 9/5 + 32 dan °C = (°F − 32) × 5/9. Perubahan suhu dikonversi tanpa 32, karena 32 hanya menggeser titik nol: perubahan 1 °C sama dengan perubahan 1,8 °F.
Jawaban: B · Triseps brakii
Triseps brakii berinsersi pada olekranon ulna dan mengekstensikan siku. Biseps dan brakialis adalah fleksor siku.
Jawaban: A · Saraf viseralnya masuk ke medula spinalis di T10, sama seperti kulit sekitar umbilikus
Nyeri viseral dari struktur midgut dialihkan ke dermatom T10 di sekitar umbilikus. Ketika peritoneum parietal meradang, nyeri terlokalisasi di fossa iliaka kanan.
Jawaban: A · Kenaikan CO₂ arteri
Kemoreseptor sentral merespons CO₂ (melalui pH cairan serebrospinal). O₂ rendah baru menambah dorongan napas secara kuat bila PaO₂ turun jauh di bawah normal, misalnya di dataran tinggi.
Jawaban: B · Di paru-paru
Renin (ginjal) memecah angiotensinogen (hati) menjadi angiotensin I, yang diubah ACE, terutama di endotel kapiler paru, menjadi angiotensin II.
Jawaban: B · Change in the inherited traits of a population over generations
Evolution is a change in the frequency of inherited traits in a population over many generations. Growth, development and seasonal migration are changes within a lifetime and are not evolution.
Jawaban: C · A nucleic acid
Nucleic acids such as DNA and RNA are made of nucleotides, each with a sugar, a phosphate and a nitrogen base. Proteins are made of amino acids and usually lack phosphorus in their backbone.
Jawaban: A · Mass number falls by 4 and atomic number falls by 2
Losing 2 protons and 2 neutrons lowers the mass number by 4 and the atomic number by 2, so a new element forms two places earlier in the periodic table.
Jawaban: D · A simple molecular (covalent) substance
Nonmetals bond covalently, and a gas at room temperature must have weak forces between separate molecules. No ions or free electrons means no conduction. Giant networks such as diamond are solids with very high melting points.
Jawaban: C · government
“Government” is “govern” + “-ment”. The n is often not pronounced, which leads to the misspelling “goverment”.
Jawaban: B · The twins looked exactly alike.
A removes the repeated ideas: “two” is implied by “twins”, and “identical in appearance” repeats “looked exactly alike”.
Jawaban: A · Redness of the skin
Erythema is redness of the skin, often a sign of irritation or inflammation.
Jawaban: D · Air in the chest cavity around the lung
A pneumothorax is air in the pleural space, which can cause the lung to collapse; blood there is a haemothorax.
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