Lembar rumus, langkah-langkah metode utama untuk setiap topik, dan 16 soal latihan, dengan pembahasan lengkap di bagian belakang.
“After the hospital put hand sanitiser by every bed, staff used it far more often, and infection rates on the ward fell.” What can be reasonably concluded?
“The village doctor knew every family by name. When the new hospital opened in the city, many patients still drove an hour to see her.” What can be inferred about why patients kept seeing her?
Hitung 1 5/6 ÷ 1 2/3. Klik jawaban dalam bentuk paling sederhana.
Pecahan atau bilangan campuran paling sederhana mana yang sama dengan desimal 2,72? Klik jawabannya.
Lapisan meninges mana yang paling luar?
Mengapa benda asing yang terhirup lebih sering tersangkut di bronkus utama kanan daripada kiri?
Berapa rentang pH normal darah arteri?
Analisis gas darah arteri seorang pasien menunjukkan pH 7,30, PaCO₂ 7,8 kPa (59 mmHg), dan bikarbonat normal. Gangguan apa yang paling mungkin?
In a food chain, which organisms are the producers?
An mRNA reads AUG-UUU-GGC-UAA. How many amino acids are in the protein made from it?
In a reaction at equilibrium, a product is continuously removed. What happens?
5,85 g of NaCl (molar mass 58,5 g/mol) is dissolved to make 500 mL of solution. What is the molarity?
Which sentence punctuates “however” correctly in the middle of a clause?
Choose the correct verb: “Neither the nurses nor the doctor ___ aware of the change.”
Choose the meaning of the word in bold: “The surgeon will excise the mole.”
Choose the word that best completes the sentence: “The two medications should not be taken together because they ___ each other’s effects.”
Jawaban: B · Easier access may have improved hand hygiene.
Placing sanitiser close by led to more frequent use, and infections fell. It is reasonable to say easier access may have helped, but not that it is the only way.
Jawaban: D · They valued her personal knowledge of them.
She knew every family by name, so patients probably valued her personal relationship with them enough to drive an hour.
Jawaban: 1 1/10
Mengalikan dan membagi pecahan: pertama ubah bilangan campuran menjadi pecahan tak wajar (2 1/3 = 7/3). Untuk mengalikan, kalikan pembilang dengan pembilang dan penyebut dengan penyebut. Untuk membagi, pertahankan pecahan pertama, ubah ÷ menjadi ×, dan balik pecahan kedua (kalikan dengan kebalikannya). Coret faktor persekutuan dan tulis hasilnya dalam bentuk paling sederhana sebagai bilangan campuran.
Jawaban: 2 18/25
Pecahan, desimal, dan persen adalah tiga cara menulis bilangan yang sama. Pecahan → desimal: bagi pembilang dengan penyebut. Desimal → persen: kalikan 100 (geser koma dua tempat ke kanan). Persen → desimal: bagi 100. Desimal → pecahan: tulis angkanya di atas 10, 100, atau 1000 (satu nol untuk setiap angka di belakang koma) lalu sederhanakan.
Jawaban: D · Dura mater
Dari luar ke dalam, meninges terdiri atas dura, araknoid, dan pia mater. Cairan serebrospinal mengalir di ruang subaraknoid antara araknoid dan pia.
Jawaban: C · Bronkus kanan lebih lebar, lebih pendek, dan lebih vertikal
Bronkus utama kanan lebih lebar, lebih pendek, dan lebih segaris dengan trakea, sehingga benda yang teraspirasi cenderung jatuh ke dalamnya.
Jawaban: D · 7,35 sampai 7,45
pH arteri normal adalah 7,35–7,45. Di bawah 7,35 disebut asidemia dan di atas 7,45 alkalemia.
Jawaban: C · Asidosis respiratorik akut
pH rendah dengan CO₂ tinggi menunjukkan asidosis respiratorik. Bikarbonat belum naik, jadi ginjal belum mengompensasi: ini akut.
Jawaban: D · Plants and algae that make food by photosynthesis
Producers (autotrophs) make their own food using light energy. Herbivores are primary consumers, predators are higher consumers and fungi and bacteria are decomposers.
Jawaban: B · 3
AUG (methionine), UUU and GGC each code for an amino acid, but UAA is a stop codon. Translation ends there, so the chain has 3 amino acids.
Jawaban: D · More product keeps forming as the equilibrium shifts to the right
Removing product lowers its concentration, so the system shifts forward (to the right) to replace it. Industry uses this to raise yields.
Jawaban: D · 0,2 M
Moles = 5,85 ÷ 58,5 = 0,100 mol. Volume = 0,500 L. Molarity = 0,100 ÷ 0,500 = 0,2 M. Stopping at moles gives the wrong answer 0,1.
Jawaban: B · The test, however, was easier than expected.
When “however” interrupts a single clause, it is set off with a pair of commas. A semicolon is used only when “however” joins two independent clauses.
Jawaban: A · was
When subjects are joined by “or” or “nor”, the verb agrees with the nearer subject. “Doctor” is singular, so the verb is “was”.
Jawaban: D · Cut out
To excise is to remove by cutting out.
Jawaban: C · counteract
To counteract is to act against and reduce or cancel an effect.
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