Lembaran formula, langkah kaedah utama untuk setiap topik dan 16 soalan latihan, dengan penyelesaian penuh di bahagian belakang.
A label on a cleaning spray reads: “Use in a well-ventilated area. Do not mix with bleach. Keep away from children.” Which action follows the label?
A notice says: “From 1 June, the clinic will no longer accept cash. Payment by card or phone only.” A patient arrives on 3 June with only cash. What is most likely to happen?
Sebuah resipi menggunakan 1.25 cawan tepung untuk 5 kelompok muffin. Pada kadar yang sama, berapa cawan tepung x diperlukan untuk 8 kelompok?
Pecahan atau nombor bercampur manakah dalam bentuk termudah yang sama dengan perpuluhan 3.83? Klik padanya.
Salur manakah yang membawa darah beroksigen dari paru-paru ke jantung?
Mengapakah patah leher femur yang beralih membawa risiko tinggi nekrosis avaskular kepala femur?
Manakah contoh klasik suap balik positif dalam badan?
Pada pesakit dengan hipotiroidisme primer, anda menjangkakan:
What does RNA polymerase do?
PCR starts with one double-stranded DNA molecule, and the number of copies doubles each cycle. How many copies are there after 10 cycles?
Water has a high specific heat capacity. How does this help the human body?
A liquid has a density of 1.2 g/mL. What is the mass of 250 mL of this liquid?
Choose the correct reflexive pronoun: “The students prepared ___ for the exam.”
Which spelling is correct for the word that means “a special right or advantage”?
Choose the meaning of the word in bold: “The patient has developed a tolerance to the painkiller.”
What does the term hemiplegia mean?
Jawapan: D · Opening a window while using the spray
A well-ventilated area has good airflow, so opening a window follows the label. The other choices break its rules.
Jawapan: C · The patient will not be able to pay with cash.
The rule starts on 1 June, so on 3 June cash is no longer accepted. The notice says nothing about refusing treatment by law or discounts.
Jawapan: x = 2 cawan
Nisbah dan kadaran: nisbah a : b membandingkan dua kuantiti. Dalam kadaran dua nisbah adalah sama, a/b = c/d, dan anda menyelesaikannya dengan darab silang: a·d = b·c. Untuk berkongsi suatu jumlah dalam nisbah m : n, bahagikannya kepada m + n bahagian yang sama; satu bahagian ialah m bahagian, yang satu lagi n bahagian.
Jawapan: 3 83/100
Pecahan, perpuluhan dan peratus ialah tiga cara menulis nombor yang sama. Pecahan → perpuluhan: bahagikan pengangka dengan penyebut. Perpuluhan → peratus: darabkan dengan 100 (alihkan titik dua tempat ke kanan). Peratus → perpuluhan: bahagikan dengan 100. Perpuluhan → pecahan: tulis digit di atas 10, 100 atau 1000 (satu sifar bagi setiap tempat perpuluhan) dan permudahkan.
Jawapan: A · Vena pulmonari
Empat vena pulmonari mengalirkan darah beroksigen ke dalam atrium kiri. Ia pengecualian utama kepada peraturan bahawa vena membawa darah tanpa oksigen.
Jawapan: D · Ia mengoyakkan cabang retinakular arteri sirkumfleks femoral medial
Kepala femur dibekalkan terutamanya oleh cabang retinakular arteri sirkumfleks femoral medial yang berjalan sepanjang leher. Patah leher yang beralih mengoyakkannya dan kepala boleh mati.
Jawapan: D · 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: B · TSH tinggi dan T4 bebas rendah
Apabila tiroid gagal, T4 rendah menghilangkan suap balik negatif dan pituitari menaikkan TSH. TSH rendah dengan T4 rendah menunjukkan hipotiroidisme sekunder (pituitari).
Jawapan: D · It builds an RNA strand from a DNA template
RNA polymerase binds near the start of a gene, unwinds the DNA and joins RNA nucleotides that are complementary to the template strand. Translation into protein happens later on ribosomes.
Jawapan: D · 1024
The number of copies is 2ⁿ after n cycles, so 2¹⁰ = 1024. After about 30 cycles, a single molecule gives over a billion copies.
Jawapan: B · It helps keep body temperature stable
Water must absorb or lose a lot of energy to change temperature. Because the body is mostly water, its temperature changes slowly, which helps maintain a stable core temperature.
Jawapan: C · 300 g
1.2 g/mL × 250 mL = 300 g. Dividing 250 by 1.2 gives about 208, which has the wrong units (mL²/g).
Jawapan: D · themselves
“Themselves” is the standard plural reflexive pronoun. “Theirselves” and “theirself” are nonstandard, and “themself” refers to one person.
Jawapan: C · privilege
“Privilege” is spelled p-r-i-v-i-l-e-g-e, with no d and an i in the second syllable.
Jawapan: B · A need for more to get the same effect
Tolerance means the body responds less to a drug over time, so a higher dose is needed for the same effect.
Jawapan: D · Paralysis of one side of the body
Hemiplegia affects one side (half) of the body. Quadriplegia (tetraplegia) affects all four limbs and paraplegia the legs.
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